Mathematics – Logic
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002usnc.conf...31k&link_type=abstract
Unmixing the SNCs: Chemical, Isotopic, and Petrologic Components of the Martian Meteorites, p. 31-32
Mathematics
Logic
Mars Surface, Mars Volcanoes, Planetary Evolution, Planetary Geology, Planetary Mantles, Chemical Evolution, Meteorites, Rocks, Basalt, Lava, Inclusions, Pyroxenes, Shergottites, Olivine
Scientific paper
Shergottites from Mars, like basalts on Earth, are important because they provide an opportunity to determine the chemical and thermal evolution of the planet's mantle, relationships between the crust and mantle, and the role of crustal assimilation in the petrogenetic processes that produce surface lavas. Attempts to utilize these rocks, however, have been frustrated because they are cumulate rocks rather than bulk melt samples that lie on liquid lines of descent. To overcome this problem, estimates of bulk melt compositions have been made by trying to identify and subtract the compositions of cumulate minerals, analyzing trapped melt inclusions, interpreting phase equilibria, and using minor element compositions in pyroxene with equilibrium coefficients. Unfortunately, these attempts have produced contradictory results.
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