Oceans at MIT

Striving to understand, harness and sustain Earth's defining frontier.

http://oceans.mit.edu

America/New_York

20171105T020000 -0400 -0500 20181104T020000 EST 20180311T020000 -0500 -0400 EDT 20170224T100000-n91e8qdrst0dg1c0kqh59dudk0@google.com 20180503T093305Z MIT Seminar | PAOC Chemical Oceanography and Biogeochemistry The Mars Mantle: Insights from Rover Missions and Terrestrial Analogues Basaltic igneous rocks represent samples of a planet’s interior and give insight to the degree of heterogeneity or homogeneity of the interior. This talk will focus on the origins of geochemical diversity and estimates of oxygen fugacity among igneous and least altered sedimentary rocks measured by rover missions. Relative influences of partial melting, fractional crystallization, and mantle metasomatism will be explored. Terrestrial mantle xenoliths from alkaline provinces are considered as analogues to the Martian mantle, including cumulate xenoliths from post-shield Hawaiian volcanoes and metasomatized xenoliths from Mount Taylor Volcanic Field (New Mexico). Such a comparison is worthwhile because the Martian upper mantle is likely a mixture of primary, residual, metasomatized, and cumulate mantle. 20170224T100000 20170224T110000 Building E25, Room 119 0

COG3 Seminar – Mariek Schmidt (Brock University)