BEGIN:VCALENDAR VERSION:2.0 PRODID:-//18.83.4.138//NONSGML kigkonsult.se iCalcreator 2.20// CALSCALE:GREGORIAN METHOD:PUBLISH X-FROM-URL:http://oceans.mit.edu X-WR-TIMEZONE:America/New_York BEGIN:VTIMEZONE TZID:America/New_York X-LIC-LOCATION:America/New_York BEGIN:STANDARD DTSTART:20171105T020000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RDATE:20181104T020000 TZNAME:EST END:STANDARD BEGIN:DAYLIGHT DTSTART:20180311T020000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:EDT END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT UID:eu60niksodc53b8umgblu9hq3s@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:http://eps.jhu.edu/directory/naomi-levin/ DTSTART;TZID=America/New_York:20150508T100000 DTEND;TZID=America/New_York:20150508T110000 LOCATION:E25-117 SEQUENCE:0 SUMMARY:COG3 Seminar – Naomi Levin (Johns Hopkins University) URL:http://oceans.mit.edu/event/cog3-seminar-naomi-levin-johns-hopkins-univ ersity X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nhttp://eps.jhu.e du/directory/naomi-levin/ END:VEVENT BEGIN:VEVENT UID:eoscs2ep8hvtpdm2sesnj3d350@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:New Insights into Earth’s oxygenation DTSTART;TZID=America/New_York:20150911T100000 DTEND;TZID=America/New_York:20150911T110000 EXDATE;TZID=America/New_York:20150918T100000 EXDATE;TZID=America/New_York:20150925T100000 EXDATE;TZID=America/New_York:20151002T100000 EXDATE;TZID=America/New_York:20151009T100000 EXDATE;TZID=America/New_York:20151016T100000 EXDATE;TZID=America/New_York:20151023T100000 EXDATE;TZID=America/New_York:20151030T100000 EXDATE;TZID=America/New_York:20151106T100000 EXDATE;TZID=America/New_York:20151113T100000 EXDATE;TZID=America/New_York:20151120T100000 EXDATE;TZID=America/New_York:20151127T100000 EXDATE;TZID=America/New_York:20151204T100000 EXDATE;TZID=America/New_York:20151211T100000 EXDATE;TZID=America/New_York:20151218T100000 LOCATION:E25-119 RRULE:FREQ=WEEKLY;COUNT=15;BYDAY=FR SEQUENCE:0 SUMMARY:COG3 Seminar – Noah Planavsky (Yale) URL:http://oceans.mit.edu/event/cog3-seminar-noah-planavsky-yale X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nNew Insights int o Earth’s oxygenation END:VEVENT BEGIN:VEVENT UID:20150918T100000-eoscs2ep8hvtpdm2sesnj3d350@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20150918T100000 DTEND;TZID=America/New_York:20150918T110000 LOCATION:E25-119 SEQUENCE:0 SUMMARY:COG3 Seminar – Clara Blättler (Princeton) URL:http://oceans.mit.edu/event/cog3-seminar-clara-blattler-princeton END:VEVENT BEGIN:VEVENT UID:20150925T100000-eoscs2ep8hvtpdm2sesnj3d350@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20150925T100000 DTEND;TZID=America/New_York:20150925T110000 LOCATION:E25-119 SEQUENCE:0 SUMMARY:COG3 Seminar – Greg Henkes (Harvard) URL:http://oceans.mit.edu/event/cog3-seminar-greg-henkes-harvard END:VEVENT BEGIN:VEVENT UID:20151009T100000-eoscs2ep8hvtpdm2sesnj3d350@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:A New Perspective on the Indian Monsoon from Paleogene to Holoc ene DTSTART;TZID=America/New_York:20151009T100000 DTEND;TZID=America/New_York:20151009T110000 LOCATION:E25-119 SEQUENCE:0 SUMMARY:COG3 Seminar – Livu Giosan (WHOI) URL:http://oceans.mit.edu/event/cog3-seminar-livu-giosan-whoi X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nA New Perspectiv e on the Indian Monsoon from Paleogene to Holocene END:VEVENT BEGIN:VEVENT UID:20151016T100000-eoscs2ep8hvtpdm2sesnj3d350@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Deglaciation to dam removal: climatic and land-use controls on New England river processes DTSTART;TZID=America/New_York:20151016T100000 DTEND;TZID=America/New_York:20151016T110000 LOCATION:E25-119 SEQUENCE:0 SUMMARY:COG3 Seminar – Noah Snyder (Boston College) URL:http://oceans.mit.edu/event/cog3-seminar-noah-snyder-boston-college X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nDeglaciation to dam removal: climatic and land-use controls on New England river processes END:VEVENT BEGIN:VEVENT UID:20151030T100000-eoscs2ep8hvtpdm2sesnj3d350@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20151030T100000 DTEND;TZID=America/New_York:20151030T110000 LOCATION:E25-119 SEQUENCE:0 SUMMARY:COG3 Seminar – Molly McCanta (Tufts) URL:http://oceans.mit.edu/event/cog3-seminar-molly-mccanta-tufts END:VEVENT BEGIN:VEVENT UID:20151106T100000-eoscs2ep8hvtpdm2sesnj3d350@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20151106T100000 DTEND;TZID=America/New_York:20151106T110000 LOCATION:E25-119 SEQUENCE:0 SUMMARY:COG3 Seminar – Ben Kocar (MIT) URL:http://oceans.mit.edu/event/cog3-seminar-ben-kocar-mit END:VEVENT BEGIN:VEVENT UID:20151113T100000-eoscs2ep8hvtpdm2sesnj3d350@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Mantle pyroxenites: from asthenosphere to lithosphere DTSTART;TZID=America/New_York:20151113T100000 DTEND;TZID=America/New_York:20151113T110000 LOCATION:E25-119 SEQUENCE:0 SUMMARY:COG3 Seminar – Veronique Le Roux (WHOI) URL:http://oceans.mit.edu/event/cog3-seminar-veronique-le-roux-whoi X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nMantle pyroxenit es: from asthenosphere to lithosphere END:VEVENT BEGIN:VEVENT UID:20151120T100000-eoscs2ep8hvtpdm2sesnj3d350@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Shallow Landslide Hazards in a Changing Climate.\n(note the cha nge in COG3 seminar time and location this week) DTSTART;TZID=America/New_York:20151119T100000 DTEND;TZID=America/New_York:20151119T110000 LOCATION:54-915 SEQUENCE:0 SUMMARY:COG3 Seminar – Dino Bellugi (MIT) URL:http://oceans.mit.edu/event/cog3-seminar-dino-bellugi-mit X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nShallow Landslid e Hazards in a Changing Climate.\n(note the change in COG3 seminar time an d location this week) END:VEVENT BEGIN:VEVENT UID:20151204T100000-eoscs2ep8hvtpdm2sesnj3d350@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Accelerated Late Cretaceous exhumation in the White Mountains\, NH: circum-Atlantic tectonism or climate change? DTSTART;TZID=America/New_York:20151204T100000 DTEND;TZID=America/New_York:20151204T110000 LOCATION:E25-119 SEQUENCE:0 SUMMARY:COG3 Seminar – Will Amidon (Middlebury) URL:http://oceans.mit.edu/event/cog3-seminar-will-amidon-middlebury X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nAccelerated Late Cretaceous exhumation in the White Mountains\, NH: circum-Atlantic tecton ism or climate change? END:VEVENT BEGIN:VEVENT UID:2h34vavglqdue109palq439p3k@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Investigating past climate-biosphere links: Speleothem-based cl imate reconstructions to constrain controls on Late Holocene forest expans ion in South America DTSTART;TZID=America/New_York:20160205T100000 DTEND;TZID=America/New_York:20160205T110000 LOCATION:E25-119 SEQUENCE:0 SUMMARY:COG3 Seminar – Corinne Wong (BC) URL:http://oceans.mit.edu/event/cog3-seminar-corinne-wong-bc X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nInvestigating pa st climate-biosphere links: Speleothem-based climate reconstructions to co nstrain controls on Late Holocene forest expansion in South America END:VEVENT BEGIN:VEVENT UID:14m4uvkacp2gos6n7mfqp63tv0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Using Thallium Isotopes to Track Sediment Transport from Slab t o Surface in the Aleutian Arc DTSTART;TZID=America/New_York:20160212T100000 DTEND;TZID=America/New_York:20160212T110000 LOCATION:E25 @ 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Sune Nielsen (WHOI) URL:http://oceans.mit.edu/event/cog3-seminar-sune-nielsen-whoi X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nUsing Thallium I sotopes to Track Sediment Transport from Slab to Surface in the Aleutian A rc END:VEVENT BEGIN:VEVENT UID:pd83a411shko775gr35jaqg9fc@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:The underground economy (bioenergetics of subseafloor sedimenta ry life) DTSTART;TZID=America/New_York:20160219T100000 DTEND;TZID=America/New_York:20160219T110000 LOCATION:E25-119 SEQUENCE:0 SUMMARY:COG3 Seminar – Steve D’Hondt (URI) URL:http://oceans.mit.edu/event/cog3-seminar-steve-dhondt-uri X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nThe underground economy (bioenergetics of subseafloor sedimentary life) END:VEVENT BEGIN:VEVENT UID:8t1ep6q888abq17kie34nomf4g@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:How did plate tectonics begin? DTSTART;TZID=America/New_York:20160226T100000 DTEND;TZID=America/New_York:20160226T110000 LOCATION:54 @ 915 SEQUENCE:0 SUMMARY:COG3 Seminar – Michael Brown (University of Maryland) URL:http://oceans.mit.edu/event/cog3-seminar-michael-brown-university-of-ma ryland X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nHow did plate te ctonics begin? END:VEVENT BEGIN:VEVENT UID:sc66pgbv5304ni6omomviem07g@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:The chase for 247Cm and what it reveals about the stellar envir onment of r-process nucleosynthesis DTSTART;TZID=America/New_York:20160311T100000 DTEND;TZID=America/New_York:20160311T110000 LOCATION:E25 @ 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Francois Tissot (MIT) URL:http://oceans.mit.edu/event/cog3-seminar-francois-tissot-mit X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nThe chase for 24 7Cm and what it reveals about the stellar environment of r-process nucleos ynthesis END:VEVENT BEGIN:VEVENT UID:0tv6c94i72uf7g41rhopctvujk@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:The Geobiological Significance of Archaeal Tetraether Lipids: a preliminary investigation with analytical and biological constraints DTSTART;TZID=America/New_York:20160318T100000 DTEND;TZID=America/New_York:20160318T110000 LOCATION:E25 @ 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Xiaolei Liu (MIT) URL:http://oceans.mit.edu/event/cog3-seminar-xiaolei-liu-mit X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nThe Geobiologica l Significance of Archaeal Tetraether Lipids: a preliminary investigation with analytical and biological constraints END:VEVENT BEGIN:VEVENT UID:dcidnoocei3lhj90lagl45btgc@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20160325T100000 DTEND;TZID=America/New_York:20160325T110000 SEQUENCE:0 SUMMARY:No COG3 Seminar\, Spring vacation URL:http://oceans.mit.edu/event/no-cog3-seminar-spring-vacation END:VEVENT BEGIN:VEVENT UID:7ob465cn2h83e00ngtea7pn4r8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Variability in stable potassium isotopes in geological and biol ogical systems DTSTART;TZID=America/New_York:20160401T100000 DTEND;TZID=America/New_York:20160401T110000 LOCATION:E25 @ 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Leah Morgan (USGS Denver) URL:http://oceans.mit.edu/event/cog3-seminar-leah-morgan-usgs-denver X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nVariability in s table potassium isotopes in geological and biological systems END:VEVENT BEGIN:VEVENT UID:vg80snltv08i757p9eq6its0is@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Supervolcanoes and their deposits: insights into the dynamics o f large magma reservoirs DTSTART;TZID=America/New_York:20160407T100000 DTEND;TZID=America/New_York:20160407T110000 LOCATION:54-915 SEQUENCE:0 SUMMARY:COG3 Seminar – Olivier Bachmann (ETH Zurich) URL:http://oceans.mit.edu/event/cog3-seminar-olivier-bachmann-eth-zurich X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nSupervolcanoes a nd their deposits: insights into the dynamics of large magma reservoirs END:VEVENT BEGIN:VEVENT UID:rlvogkvcd5qun4u56asglevkts@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Landscape evolution of the Channeled Scablands\, eastern Washin gton DTSTART;TZID=America/New_York:20160415T100000 DTEND;TZID=America/New_York:20160415T110000 LOCATION:E25 @ 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Isaac Larsen (UMass) URL:http://oceans.mit.edu/event/cog3-seminar-isaac-larsen-umass X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nLandscape evolut ion of the Channeled Scablands\, eastern Washington END:VEVENT BEGIN:VEVENT UID:ptd2h63hnhj0ql1hbcn99957ek@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Climate and Tectonics of the southern Central Andes\, NW Argent ina DTSTART;TZID=America/New_York:20160422T100000 DTEND;TZID=America/New_York:20160422T110000 LOCATION:E25 @ 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Alexander Rohrmann (Oregon State University) URL:http://oceans.mit.edu/event/cog3-seminar-alexander-rohrmann-oregon-stat e-university X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nClimate and Tect onics of the southern Central Andes\, NW Argentina END:VEVENT BEGIN:VEVENT UID:a5dfrcep1oi350iejd3gmjtuks@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Strain controls on olivine crystallographic texture: a record f rom mantle xenoliths\, West Marie Byrd Land\, Antarctica DTSTART;TZID=America/New_York:20160429T100000 DTEND;TZID=America/New_York:20160429T110000 LOCATION:E25 @ 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Seth Kruckenberg (BC) URL:http://oceans.mit.edu/event/cog3-seminar-seth-kruckenberg-bc X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nStrain controls on olivine crystallographic texture: a record from mantle xenoliths\, West Marie Byrd Land\, Antarctica END:VEVENT BEGIN:VEVENT UID:g7md7ulk3eourmg52pjl54te0g@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:When did the continents grow? DTSTART;TZID=America/New_York:20160506T100000 DTEND;TZID=America/New_York:20160506T110000 LOCATION:E25 @ 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Stephen Parman (Brown) URL:http://oceans.mit.edu/event/cog3-seminar-stephen-parman-brown X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nWhen did the con tinents grow? END:VEVENT BEGIN:VEVENT UID:1l7rbp8gscpdmu2724b07a3g00@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Correlative microscopy\, geochronology\, and atom probe tomogra phy of metamorphosed zircon DTSTART;TZID=America/New_York:20160513T100000 DTEND;TZID=America/New_York:20160513T110000 LOCATION:E25 @ 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Emily Peterman (Bowdoin) URL:http://oceans.mit.edu/event/cog3-seminar-emily-peterman-bowdoin X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nCorrelative micr oscopy\, geochronology\, and atom probe tomography of metamorphosed zircon END:VEVENT BEGIN:VEVENT UID:7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20160909T150000 DTEND;TZID=America/New_York:20160909T160000 EXDATE;TZID=America/New_York:20160923T150000 EXDATE;TZID=America/New_York:20161014T150000 EXDATE;TZID=America/New_York:20161021T150000 EXDATE;TZID=America/New_York:20161104T150000 EXDATE;TZID=America/New_York:20161111T150000 EXDATE;TZID=America/New_York:20161118T150000 EXDATE;TZID=America/New_York:20161209T150000 LOCATION:Building E25\, Room 117 RRULE:FREQ=WEEKLY;UNTIL=20161209T200000Z;BYDAY=FR SEQUENCE:0 SUMMARY:COG3 Seminar – TBD URL:http://oceans.mit.edu/event/cog3-seminar-tbd END:VEVENT BEGIN:VEVENT UID:20160909T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20160909T150000 DTEND;TZID=America/New_York:20160909T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:NO COG3 Seminar URL:http://oceans.mit.edu/event/no-cog3-seminar-5 END:VEVENT BEGIN:VEVENT UID:20160916T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:The role of magmatism during continental rifting DTSTART;TZID=America/New_York:20160916T150000 DTEND;TZID=America/New_York:20160916T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:COG3 Seminar – Sara Mana (Salem State University) URL:http://oceans.mit.edu/event/cog3-seminar-sara-mana-salem-state-universi ty X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nThe role of magm atism during continental rifting END:VEVENT BEGIN:VEVENT UID:20160923T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20160923T150000 DTEND;TZID=America/New_York:20160923T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:NO COG3 Seminar – Student Holiday URL:http://oceans.mit.edu/event/no-cog3-seminar-student-holiday END:VEVENT BEGIN:VEVENT UID:20160930T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Using gut molecular markers to reveal our ancestors' gut microb iome DTSTART;TZID=America/New_York:20160930T150000 DTEND;TZID=America/New_York:20160930T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:COG3 Seminar – Ainara Sistiaga (MIT) URL:http://oceans.mit.edu/event/cog3-seminar-ainara-sistiaga-mit X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nUsing gut molecu lar markers to reveal our ancestors' gut microbiome END:VEVENT BEGIN:VEVENT UID:20161007T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20161007T150000 DTEND;TZID=America/New_York:20161007T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:NO COG3 Seminar URL:http://oceans.mit.edu/event/no-cog3-seminar-3 END:VEVENT BEGIN:VEVENT UID:20161014T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:A view of the Hadean Earth: petrogenesis of the oldest rocks wi thin the Acasta Gneiss Complex DTSTART;TZID=America/New_York:20161014T150000 DTEND;TZID=America/New_York:20161014T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:COG3 Seminar – Jesse Reimink (Carnegie) URL:http://oceans.mit.edu/event/cog3-seminar-jesse-reimink-carnegie X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nA view of the Ha dean Earth: petrogenesis of the oldest rocks within the Acasta Gneiss Comp lex END:VEVENT BEGIN:VEVENT UID:20161021T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Megeagravel on the move: storm\, waves\, boulder transport\, an d the erosion of rocky coasts DTSTART;TZID=America/New_York:20161021T150000 DTEND;TZID=America/New_York:20161021T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:COG3 Seminar – Rónadh Cox (Williams College) URL:http://oceans.mit.edu/event/cog3-seminar-ronadh-cox-williams-college X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nMegeagravel on t he move: storm\, waves\, boulder transport\, and the erosion of rocky coas ts END:VEVENT BEGIN:VEVENT UID:20161028T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Understanding microbial ecology in the deep terrestrial biosphe re: a geochemical and metagenomic approach DTSTART;TZID=America/New_York:20161028T150000 DTEND;TZID=America/New_York:20161028T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:COG3 Seminar – Lily Momper (MIT) URL:http://oceans.mit.edu/event/cog3-seminar-lily-momper-mit X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nUnderstanding mi crobial ecology in the deep terrestrial biosphere: a geochemical and metag enomic approach END:VEVENT BEGIN:VEVENT UID:20161104T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20161104T150000 DTEND;TZID=America/New_York:20161104T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:NO COG3 Seminar URL:http://oceans.mit.edu/event/no-cog3-seminar-4 END:VEVENT BEGIN:VEVENT UID:20161111T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20161111T150000 DTEND;TZID=America/New_York:20161111T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:NO COG3 Seminar – Veteran’s Day URL:http://oceans.mit.edu/event/no-cog3-seminar-veterans-day END:VEVENT BEGIN:VEVENT UID:20161118T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Chemical Controls on Calcite Dissolution Kinetics in Seawater DTSTART;TZID=America/New_York:20161118T150000 DTEND;TZID=America/New_York:20161118T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:COG3 Seminar – Adam Subhas (Caltech) URL:http://oceans.mit.edu/event/cog3-seminar-adam-subhas-caltech X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nChemical Control s on Calcite Dissolution Kinetics in Seawater END:VEVENT BEGIN:VEVENT UID:20161125T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20161125T150000 DTEND;TZID=America/New_York:20161125T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:NO COG3 Seminar – Thanksgiving Vacation URL:http://oceans.mit.edu/event/no-cog3-seminar-thanksgiving-vacation END:VEVENT BEGIN:VEVENT UID:20161202T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20161202T150000 DTEND;TZID=America/New_York:20161202T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:No COG3 Seminar URL:http://oceans.mit.edu/event/no-cog3-seminar END:VEVENT BEGIN:VEVENT UID:20161209T150000-7r1v9apia8c9p6k3dqpf2bq0u8@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20161209T150000 DTEND;TZID=America/New_York:20161209T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:NO COG3 Seminar URL:http://oceans.mit.edu/event/no-cog3-seminar-2 END:VEVENT BEGIN:VEVENT UID:enootj7h0g9qv4m68l1dpcr708@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20161216T150000 DTEND;TZID=America/New_York:20161216T160000 LOCATION:Building E25\, Room 117 SEQUENCE:0 SUMMARY:NO COG3 Seminar – Finals Week/AGU URL:http://oceans.mit.edu/event/no-cog3-seminar-finals-weekagu END:VEVENT BEGIN:VEVENT UID:20170210T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Linking fault-zone geology\, fluid flow and seismicity at ocean ic transform faults DTSTART;TZID=America/New_York:20170210T100000 DTEND;TZID=America/New_York:20170210T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Jessica Warren (University of Delaware) URL:http://oceans.mit.edu/event/cog3-seminar-jessica-warren-university-of-d elaware X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nLinking fault-zo ne geology\, fluid flow and seismicity at oceanic transform faults< /HTML> END:VEVENT BEGIN:VEVENT UID:n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20170210T100000 DTEND;TZID=America/New_York:20170210T110000 EXDATE;TZID=America/New_York:20170210T100000 EXDATE;TZID=America/New_York:20170217T100000 EXDATE;TZID=America/New_York:20170224T100000 EXDATE;TZID=America/New_York:20170303T100000 EXDATE;TZID=America/New_York:20170324T100000 EXDATE;TZID=America/New_York:20170331T100000 EXDATE;TZID=America/New_York:20170414T100000 EXDATE;TZID=America/New_York:20170421T100000 EXDATE;TZID=America/New_York:20170505T100000 EXDATE;TZID=America/New_York:20170512T100000 LOCATION:Building E25\, Room 119 RRULE:FREQ=WEEKLY;UNTIL=20170512T140000Z;BYDAY=FR SEQUENCE:0 SUMMARY:COG3 Seminar – Speaker () URL:http://oceans.mit.edu/event/cog3-seminar-speaker END:VEVENT BEGIN:VEVENT UID:20170217T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Life under ice: Exploring the microbial landscape of Antarctic lakes DTSTART;TZID=America/New_York:20170217T100000 DTEND;TZID=America/New_York:20170217T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Tyler Mackey (MIT) URL:http://oceans.mit.edu/event/cog3-seminar-tyler-mackey-mit X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nLife under ice: Exploring the microbial landscape of Antarctic lakes END:VEVENT BEGIN:VEVENT UID:20170224T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:The Mars Mantle: Insights from Rover Missions and Terrestrial A nalogues\n\nBasaltic igneous rocks represent samples of a planet’s\ninteri or and give insight to the degree of heterogeneity or\nhomogeneity of the interior. This talk will focus on the\norigins of geochemical diversity an d estimates of oxygen\nfugacity among igneous and least altered sedimentar y rocks\nmeasured by rover missions. Relative influences of partial\nmelti ng\, fractional crystallization\, and mantle metasomatism\nwill be explore d. Terrestrial mantle xenoliths from alkaline\nprovinces are considered as analogues to the Martian\nmantle\, including cumulate xenoliths from post -shield\nHawaiian volcanoes and metasomatized xenoliths from\nMount Taylor Volcanic Field (New Mexico). Such a\ncomparison is worthwhile because the Martian upper\nmantle is likely a mixture of primary\, residual\,\nmetaso matized\, and cumulate mantle. DTSTART;TZID=America/New_York:20170224T100000 DTEND;TZID=America/New_York:20170224T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Mariek Schmidt (Brock University) URL:http://oceans.mit.edu/event/cog3-seminar-mariek-schmidt-brock-universit y X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nThe Mars Mantle: Insights from Rover Missions and Terrestrial Analogues\n\nBasaltic igneou s rocks represent samples of a planet’s\ninterior and give insight to the degree of heterogeneity or\nhomogeneity of the interior. This talk will fo cus on the\norigins of geochemical diversity and estimates of oxygen\nfuga city among igneous and least altered sedimentary rocks\nmeasured by rover missions. Relative influences of partial\nmelting\, fractional crystalliza tion\, and mantle metasomatism\nwill be explored. Terrestrial mantle xenol iths from alkaline\nprovinces are considered as analogues to the Martian\n mantle\, including cumulate xenoliths from post-shield\nHawaiian volcanoes and metasomatized xenoliths from\nMount Taylor Volcanic Field (New Mexico ). Such a\ncomparison is worthwhile because the Martian upper\nmantle is l ikely a mixture of primary\, residual\,\nmetasomatized\, and cumulate mant le. END:VEVENT BEGIN:VEVENT UID:20170303T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Dust in the Wind: Investigating Past and Present Dust Depositio n in the Uinta Mountains\, Utah\n\nEolian delivery of mineral dust impacts soil development\, contributes to soil fertility\, influences surface wat er chemistry\, and alters snowpack albedo in high mountain ecosystems. Thi s study focuses on past and present deposition of mineral dust in the alpi ne zone of the Uinta Mountains in northeastern Utah. Alpine soil profiles in the Uintas feature a ubiquitous layer of silt ~20 cm thick\, indicating that dust deposition has been a significant long-term process in this env ironment. Four passive dust collectors were deployed in June\, 2011\, and an additional four were deployed in October\, 2015. These collectors docum ent an average dust flux of ~4 g/m2/yr\, similar to values measured from s nowpack samples in the Wind River (Wyoming) and San Juan (Colorado) Mounta ins. XRD analysis reveals that the dust is dominated by quartz\, potassium feldspar\, plagioclase\, and illite. Some samples contain amphibole and c hlorite. The dust is very well-sorted\, with a median size of 8 μm. Geoche mical records from lacustrine sediment cores reveal that the flux and prop erties of dust arriving in the Uinta Mountains have varied over the post-g lacial period\, likely in response to regional changes in aridity. A speci ally designed active sampler deployed at an elevation of 3700 m collects s eparate samples of NNW and SSE provenance. Differences in grain size distr ibution\, mineralogy\, and geochemistry of samples from contrasting wind d irections indicate the importance of regional dust sources. DTSTART;TZID=America/New_York:20170303T100000 DTEND;TZID=America/New_York:20170303T110000 LOCATION:Building 54\, Room 915 SEQUENCE:0 SUMMARY:COG3 Seminar – Jeff Munroe (Middlebury College) URL:http://oceans.mit.edu/event/cog3-seminar-jeff-munroe-middlebury-college X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nDust in the Wind : Investigating Past and Present Dust Deposition in the Uinta Mountains\, Utah\n\nEolian delivery of mineral dust impacts soil development\, contrib utes to soil fertility\, influences surface water chemistry\, and alters s nowpack albedo in high mountain ecosystems. This study focuses on past and present deposition of mineral dust in the alpine zone of the Uinta Mounta ins in northeastern Utah. Alpine soil profiles in the Uintas feature a ubi quitous layer of silt ~20 cm thick\, indicating that dust deposition has b een a significant long-term process in this environment. Four passive dust collectors were deployed in June\, 2011\, and an additional four were dep loyed in October\, 2015. These collectors document an average dust flux of ~4 g/m2/yr\, similar to values measured from snowpack samples in the Wind River (Wyoming) and San Juan (Colorado) Mountains. XRD analysis reveals t hat the dust is dominated by quartz\, potassium feldspar\, plagioclase\, a nd illite. Some samples contain amphibole and chlorite. The dust is very w ell-sorted\, with a median size of 8 μm. Geochemical records from lacustri ne sediment cores reveal that the flux and properties of dust arriving in the Uinta Mountains have varied over the post-glacial period\, likely in r esponse to regional changes in aridity. A specially designed active sample r deployed at an elevation of 3700 m collects separate samples of NNW and SSE provenance. Differences in grain size distribution\, mineralogy\, and geochemistry of samples from contrasting wind directions indicate the impo rtance of regional dust sources. END:VEVENT BEGIN:VEVENT UID:20170310T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Generation of Arc Crust Requires Oxidation of the Mantle\n\nCon tinental crust forms uniquely on Earth. High water and oxygen activities l ead to the generation of continental crust\, but the location\, mechanism\ , and pathway by which oxygen activity increases remains elusive. I¹ll pre sent recent work mapping oxygen activity in space and time during subducti on zone initiation in the Western Pacific\, a story told by basalts and fo rearc peridotites. DTSTART;TZID=America/New_York:20170310T100000 DTEND;TZID=America/New_York:20170310T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Elizabeth Cottrell (Smithsonian Institution National Museum of Natural History) URL:http://oceans.mit.edu/event/cog3-seminar-elizabeth-cottrell-smithsonian -institution-national-museum-of-natural-history X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nGeneration of Ar c Crust Requires Oxidation of the Mantle\n\nContinental crust forms unique ly on Earth. High water and oxygen activities lead to the generation of co ntinental crust\, but the location\, mechanism\, and pathway by which oxyg en activity increases remains elusive. I¹ll present recent work mapping ox ygen activity in space and time during subduction zone initiation in the W estern Pacific\, a story told by basalts and forearc peridotites. END:VEVENT BEGIN:VEVENT UID:20170317T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Seeing Through the Haze: Using Sulfur-Isotope Systematics to Pr obe the Composition of Earth's Early Atmosphere\n\nReconstructing the evol ution of atmospheric chemistry has long been the focus of geochemical rese arch\; however\, the utility of our geochemical toolbox is rarely without inference. Introducing quadruple S-isotope systematics\, we’ll take a ramb le through the Archean sulfur-isotope record and take a glimpse at the evo lution of our atmosphere. Focusing on newer\, high-resolution\, approaches I will present recent and [maybe] emerging data that constrains the first irreversible rise in atmospheric oxygen—The Great Oxidation Event—as well as a mechanism that may have expedited the accumulation of oxygen and the biological innovations that followed. DTSTART;TZID=America/New_York:20170317T100000 DTEND;TZID=America/New_York:20170317T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Gareth Izon (MIT) URL:http://oceans.mit.edu/event/cog3-seminar-tba X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nSeeing Through t he Haze: Using Sulfur-Isotope Systematics to Probe the Composition of Eart h's Early Atmosphere\n\nReconstructing the evolution of atmospheric chemis try has long been the focus of geochemical research\; however\, the utilit y of our geochemical toolbox is rarely without inference. Introducing quad ruple S-isotope systematics\, we’ll take a ramble through the Archean sulf ur-isotope record and take a glimpse at the evolution of our atmosphere. F ocusing on newer\, high-resolution\, approaches I will present recent and [maybe] emerging data that constrains the first irreversible rise in atmos pheric oxygen—The Great Oxidation Event—as well as a mechanism that may ha ve expedited the accumulation of oxygen and the biological innovations tha t followed. \n END:VEVENT BEGIN:VEVENT UID:20170324T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Cave records from Southeast Asia: Windows to past hydroclimate variability\n\nDespite significant advances in our understanding of tropic al Australasian monsoon climate variability over the past decade(s)\, we s till know very little about the range and mechanisms of rainfall variabili ty in Southeast Asia on orbital (~100\,000-year) to millennial (~1000-year ) timescales. As a result\, state-of-the-art general circulation models ha ve little data with which to validate simulations of past climate\, thereb y placing much uncertainty on future projections of monsoon variability. G iven the large population of SE Asia who rely on the monsoon rains for agr iculture and economic development\, it is critical that we gain a better u nderstanding on the factors that influence the monsoon climate. Over the p ast decade\, my\ncolleagues and I have explored a host of cave systems in remote regions of SE Asia installing data-loggers and collecting stalagmit es\, with the overarching goals being to: i) better constrain modern proce sses controlling speleothem growth\, and in particular\, how they preserve above-cave climate changes\; and ii) to build high-resolution and long re cords of past monsoon behavior from the geochemical signals preserved in t hese deposits. In this talk\, I will discuss the utility of speleothems to accurately preserve past changes in regional SE Asian hydroclimate\, and their strong potential in addressing current uncertainties in tropical cli mate variability over a range of timescales (i.e. glacial-interglacial to millennial)\, particularly with respect to how the Asian monsoon responded to past changes in Earth’s boundary conditions. DTSTART;TZID=America/New_York:20170324T100000 DTEND;TZID=America/New_York:20170324T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Michael Griffiths (William Paterson University) URL:http://oceans.mit.edu/event/cog3-seminar-michael-griffiths-william-patt erson-university X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nCave records fro m Southeast Asia: Windows to past hydroclimate variability\n\nDespite sign ificant advances in our understanding of tropical Australasian monsoon cli mate variability over the past decade(s)\, we still know very little about the range and mechanisms of rainfall variability in Southeast Asia on orb ital (~100\,000-year) to millennial (~1000-year) timescales. As a result\, state-of-the-art general circulation models have little data with which t o validate simulations of past climate\, thereby placing much uncertainty on future projections of monsoon variability. Given the large population o f SE Asia who rely on the monsoon rains for agriculture and economic devel opment\, it is critical that we gain a better understanding on the factors that influence the monsoon climate. Over the past decade\, my\ncolleagues and I have explored a host of cave systems in remote regions of SE Asia i nstalling data-loggers and collecting stalagmites\, with the overarching g oals being to: i) better constrain modern processes controlling speleothem growth\, and in particular\, how they preserve above-cave climate changes \; and ii) to build high-resolution and long records of past monsoon behav ior from the geochemical signals preserved in these deposits. In this talk \, I will discuss the utility of speleothems to accurately preserve past c hanges in regional SE Asian hydroclimate\, and their strong potential in a ddressing current uncertainties in tropical climate variability over a ran ge of timescales (i.e. glacial-interglacial to millennial)\, particularly with respect to how the Asian monsoon responded to past changes in Earth’s boundary conditions. END:VEVENT BEGIN:VEVENT UID:20170331T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20170331T100000 DTEND;TZID=America/New_York:20170331T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:No COG3 Seminar – Spring Break URL:http://oceans.mit.edu/event/no-cog3-seminar-spring-break END:VEVENT BEGIN:VEVENT UID:20170407T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Biostratigraphy and Glaciations in the Neoproterozoic: Updates from Re-Os geochronology\n\nSedimentary strata from the Neoproterozoic Era (1000-541 Ma) host evidence for widespread glaciations\, major fluctuatio ns in geochemical proxy records\, and numerous biological innovations asso ciated with the diversification of eukaryotes that culminated with the eme rgence of Metazoans. Understanding the drivers and rates of change through this critical transition has been limited by the lack of a robust chronol ogy. Here I will present multiple new Re-Os and U-Pb geochronology data fr om Neoproterozoic strata in an attempt to refine global correlation scheme s and further constrain this critical interval of Earth history. DTSTART;TZID=America/New_York:20170407T100000 DTEND;TZID=America/New_York:20170407T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Alan Rooney (Yale) URL:http://oceans.mit.edu/event/cog3-seminar-alan-rooney-yale X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nBiostratigraphy and Glaciations in the Neoproterozoic: Updates from Re-Os geochronology\n \nSedimentary strata from the Neoproterozoic Era (1000-541 Ma) host eviden ce for widespread glaciations\, major fluctuations in geochemical proxy re cords\, and numerous biological innovations associated with the diversific ation of eukaryotes that culminated with the emergence of Metazoans. Under standing the drivers and rates of change through this critical transition has been limited by the lack of a robust chronology. Here I will present m ultiple new Re-Os and U-Pb geochronology data from Neoproterozoic strata i n an attempt to refine global correlation schemes and further constrain th is critical interval of Earth history. END:VEVENT BEGIN:VEVENT UID:20170414T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:The What\, When\, Where\, and Why of Supereruptions\n\nSupereru ptions are gigantic volcanic eruptions (�450 km^3 of magma) the likes of w hich we have never witnessed. Yet\, this does not mean that we will never experience one. Such\nenormous eruptions have the potential to wreak havoc on life\, infrastructure\, travel\, and the\nenvironment. Consequently\, it is critical that we study past supereruptions to understand how\, when\ , where\, and why one might happen in the future. In addition\, supererupt ion deposits are evidence that large volumes of magma existed in the crust multiple times in Earth’s history\; thus\, studying these systems can inf orm on the magmatic construction of Earth’s crust.\n\nIn this talk\, I wil l address several outstanding and strongly debated questions regarding\nsu pereruptive systems: Where in the crust do these magmas reside? What shape do they take? How long do they persist in the crust before erupting? When \, why\, and over what timescales does the eruptive process occur? How are the giant volumes of crystal-poor high-silica rhyolite magma involved in supereruptions generated? Answering these questions is important both for practical reasons (e.g.\, hazards preparation and mitigation) and intellec tual ones (e.g.\, understanding crustal processes). \n\nTo address these q uestions\, I combine information from multiple scales and perspectives (fi eld studies\, geochemistry\, textural relations of crystals in rocks and m elt inclusions in crystals\, geochronology\, geobarometry\, phase-equilibr ia modeling\, and diffusion modeling). Results from this work suggest that we can make some broad generalizations about supereruptive systems\, but these systems have notable variability as well (e.g.\, their shape in the crust). This work also illustrates the power in using a multi-faceted\, mu lti-disciplinary approach to addressing questions in the Earth Sciences. DTSTART;TZID=America/New_York:20170414T100000 DTEND;TZID=America/New_York:20170414T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Ayla Pamucku (Princeton) URL:http://oceans.mit.edu/event/cog3-seminar-ayla-pamucku-princeton X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nThe What\, When\ , Where\, and Why of Supereruptions\n\nSupereruptions are gigantic volcani c eruptions (�450 km^3 of magma) the likes of which we have never witnesse d. Yet\, this does not mean that we will never experience one. Such\nenorm ous eruptions have the potential to wreak havoc on life\, infrastructure\, travel\, and the\nenvironment. Consequently\, it is critical that we stud y past supereruptions to understand how\, when\, where\, and why one might happen in the future. In addition\, supereruption deposits are evidence t hat large volumes of magma existed in the crust multiple times in Earth’s history\; thus\, studying these systems can inform on the magmatic constru ction of Earth’s crust.\n\nIn this talk\, I will address several outstandi ng and strongly debated questions regarding\nsupereruptive systems: Where in the crust do these magmas reside? What shape do they take? How long do they persist in the crust before erupting? When\, why\, and over what time scales does the eruptive process occur? How are the giant volumes of cryst al-poor high-silica rhyolite magma involved in supereruptions generated? A nswering these questions is important both for practical reasons (e.g.\, h azards preparation and mitigation) and intellectual ones (e.g.\, understan ding crustal processes). \n\nTo address these questions\, I combine inform ation from multiple scales and perspectives (field studies\, geochemistry\ , textural relations of crystals in rocks and melt inclusions in crystals\ , geochronology\, geobarometry\, phase-equilibria modeling\, and diffusion modeling). Results from this work suggest that we can make some broad gen eralizations about supereruptive systems\, but these systems have notable variability as well (e.g.\, their shape in the crust). This work also illu strates the power in using a multi-faceted\, multi-disciplinary approach t o addressing questions in the Earth Sciences.\n END:VEVENT BEGIN:VEVENT UID:20170421T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:The role of grain size on the seismic structure of the oceanic upper mantle and melt migration beneath midocean ridges\n\nGrain size is a key microstructural property of the Earth's mantle\, because it influence s rheology\, deformation mode (e.g.\, diffusion vs. dislocation creep)\, s eismic attenuation and wave-speeds\, electrical conductivity\, and the per meability of the mantle to melt migration. In\nthis talk I will discuss mo dels for grain size evolution in the oceanic upper that combine composite grain-size dependent rheology with the Wattmeter [Austin & Evans\, 2007] m odel for how grain size changes in response to the evolving deformation fi eld. These results will be interpreted in the context of the seismic low v elocity zone beneath the ocean basins and the origin of the lithosphere as thenosphere boundary. Finally\, I will discuss the implications of grain s ize variability on the patterns of melt migration beneath mid-ocean ridges and subduction zones and show the results of preliminary two-phase flow m odels that couple melt migration with the predicted grain-size field. DTSTART;TZID=America/New_York:20170421T100000 DTEND;TZID=America/New_York:20170421T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Mark Behn (WHOI) URL:http://oceans.mit.edu/event/cog3-seminar-mark-behn-whoi X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nThe role of grai n size on the seismic structure of the oceanic upper mantle and melt migra tion beneath midocean ridges\n\nGrain size is a key microstructural proper ty of the Earth's mantle\, because it influences rheology\, deformation mo de (e.g.\, diffusion vs. dislocation creep)\, seismic attenuation and wave -speeds\, electrical conductivity\, and the permeability of the mantle to melt migration. In\nthis talk I will discuss models for grain size evoluti on in the oceanic upper that combine composite grain-size dependent rheolo gy with the Wattmeter [Austin & Evans\, 2007] model for how grain size cha nges in response to the evolving deformation field. These results will be interpreted in the context of the seismic low velocity zone beneath the oc ean basins and the origin of the lithosphere asthenosphere boundary. Final ly\, I will discuss the implications of grain size variability on the patt erns of melt migration beneath mid-ocean ridges and subduction zones and s how the results of preliminary two-phase flow models that couple melt migr ation with the predicted grain-size field. END:VEVENT BEGIN:VEVENT UID:20170428T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Why magma stall in the Earth’s crust?\n\nThe emplacement depth of magmas plays a key role in determining the chemical stratification of t he crust\, and on the probability of magma to reach the surface to\nfeed v olcanic eruptions. While mechanical discontinuities within the crust have been shown to lead to the arrest of propagating dykes\, in a section of a volcanic island arc in Kohistan\, the depth of emplacement of granitoids d oes not seem to correspond to any particular mechanical discontinuity. I w ill focus on the evolution of crystallinity and temperature as function of magma chemistry and depth to show how magma chemistry can strongly affect the depth at which magma stall in the crust to form magma reservoirs. DTSTART;TZID=America/New_York:20170427T100000 DTEND;TZID=America/New_York:20170427T110000 LOCATION:Building 54\, Room 915 SEQUENCE:0 SUMMARY:COG3 Seminar – Luca Caricchi (University of Geneva) URL:http://oceans.mit.edu/event/cog3-seminar-luca-caricchi-university-of-ge neva X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nWhy magma stall in the Earth’s crust?\n\nThe emplacement depth of magmas plays a key role in determining the chemical stratification of the crust\, and on the proba bility of magma to reach the surface to\nfeed volcanic eruptions. While me chanical discontinuities within the crust have been shown to lead to the a rrest of propagating dykes\, in a section of a volcanic island arc in Kohi stan\, the depth of emplacement of granitoids does not seem to correspond to any particular mechanical discontinuity. I will focus on the evolution of crystallinity and temperature as function of magma chemistry and depth to show how magma chemistry can strongly affect the depth at which magma s tall in the crust to form magma reservoirs. END:VEVENT BEGIN:VEVENT UID:20170505T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20170505T100000 DTEND;TZID=America/New_York:20170505T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:COG3 Seminar – No Seminar URL:http://oceans.mit.edu/event/cog3-seminar-vanja-klepac-ceraj-wellesley-c ollege END:VEVENT BEGIN:VEVENT UID:20170512T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:Identifying Traces of Primitive Life in Ancient Rocks\n\nThe ea rly life fossil record is based upon a limited\nnumber of often controvers ial graphitic microfossils.\nThe main complication resides in the poor\npr eservation of organic biosignatures in the\n(meta)sedimentary rock record. Biodegradation and\nfossilization processes\, as well as the increase of \ntemperature and pressure conditions during\ndiagenesis and metamorphism inevitably alter the\noriginal biochemical signatures of organic molecules .\nThus\, at a certain stage\, biogenic and abiotic organics\nmay become v ery difficult to distinguish.\nDuring this talk\, I will show how combinin g\ncharacterization of natural samples using advanced\nspectroscopic techn iques (STXM-based XANES &\nRaman microspectroscopies) and simulation of\nf ossilization processes in the laboratory sheds new\nlight on the potential preservation of microorganism\nmolecular biosignatures in ancient rocks. DTSTART;TZID=America/New_York:20170512T100000 DTEND;TZID=America/New_York:20170512T110000 LOCATION:Building E25\, Room 119 SEQUENCE:0 SUMMARY:COG3 Seminar – Julien Alleon (MIT) URL:http://oceans.mit.edu/event/cog3-seminar-julien-alleon-mit X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nIdentifying Trac es of Primitive Life in Ancient Rocks\n\nThe early life fossil record is b ased upon a limited\nnumber of often controversial graphitic microfossils. \nThe main complication resides in the poor\npreservation of organic biosi gnatures in the\n(meta)sedimentary rock record. Biodegradation and\nfossil ization processes\, as well as the increase of\ntemperature and pressure c onditions during\ndiagenesis and metamorphism inevitably alter the\norigin al biochemical signatures of organic molecules.\nThus\, at a certain stage \, biogenic and abiotic organics\nmay become very difficult to distinguish .\nDuring this talk\, I will show how combining\ncharacterization of natur al samples using advanced\nspectroscopic techniques (STXM-based XANES &\nR aman microspectroscopies) and simulation of\nfossilization processes in th e laboratory sheds new\nlight on the potential preservation of microorgani sm\nmolecular biosignatures in ancient rocks. END:VEVENT BEGIN:VEVENT UID:flstovv4lnrvgo4mdv6gd931qg@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION:The origin of the eukaryote cell\n\nEukaryotes have a fundament ally different cell\nstructure from bacteria and archaea\, and possibly\ne volved from the latter. This possibility: an archaeal\norigin of eukaryote s has been a bit of a distraction in\nthat it has led to models that try a nd explain\neukaryote origins from modern archaea lacking any\neukaryotic features. In this talk I will summarise what\nwe know about eukaryote orig ins\, and argue that\nways of thinking now more common in\npalaeontology c an help us to understand eukaryote\norigins. By focusing on known biologic al processes\,\nand ecological drivers\, key events in the origin of\neuka ryotes can be understood without needing to\nappeal to special or rare eve nts. DTSTART;TZID=America/New_York:20170516T100000 DTEND;TZID=America/New_York:20170516T110000 LOCATION:Building 54\, Room 915 SEQUENCE:0 SUMMARY:COG3 Seminar – Anthony Poole (The University of Auckland) URL:http://oceans.mit.edu/event/cog3-seminar-anthony-poole-the-university-o f-auckland X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nThe origin of th e eukaryote cell\n\nEukaryotes have a fundamentally different cell\nstruct ure from bacteria and archaea\, and possibly\nevolved from the latter. Thi s possibility: an archaeal\norigin of eukaryotes has been a bit of a distr action in\nthat it has led to models that try and explain\neukaryote origi ns from modern archaea lacking any\neukaryotic features. In this talk I wi ll summarise what\nwe know about eukaryote origins\, and argue that\nways of thinking now more common in\npalaeontology can help us to understand eu karyote\norigins. By focusing on known biological processes\,\nand ecologi cal drivers\, key events in the origin of\neukaryotes can be understood wi thout needing to\nappeal to special or rare events. END:VEVENT BEGIN:VEVENT UID:fk5ja28aab6c21d6k2igk755nk@google.com DTSTAMP:20180503T092946Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Chemical Oceanography and Biog eochemistry CONTACT: DESCRIPTION: DTSTART;TZID=America/New_York:20170518T100000 DTEND;TZID=America/New_York:20170518T110000 LOCATION:Building 54\, Room 915 SEQUENCE:0 SUMMARY:COG3 Seminar – Cathy Busby (UCSB) URL:http://oceans.mit.edu/event/cog3-seminar-cathy-busby-ucsb END:VEVENT END:VCALENDAR