Experimental Petrology of the Basaltic Shergottite Yamato 980459: Implications for the Thermal Structure of the Martian MantleYamato 980459 (Y98) is an olivine-phyric basaltic shergottite composed of 48% pyroxene, 26% olivine, 25% mesostasis, and 1% other minerals. Unlike the other Martian basalts, it contains no plagioclase. Olivine in Y98 is the most magnesian of all Martian meteorites. Thus Y98 is believed to be the most primitive and its composition may be the closest to a primary or direct melt of the Martian mantle. As such, it provides a very useful probe of the mineralogy and depth of its mantle source region. Toward this end, we are conducting crystallization experiments on a synthetic Y98 composition at Martian mantle pressures and temperatures.
Document ID
20050167804
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Dalton, H. A. (Arizona State Univ. Tempe, AZ, United States)
Musselwhite, D. S. (Lunar and Planetary Inst. Houston, TX, United States)
Kiefer, W. (Lunar and Planetary Inst. Houston, TX, United States)
Treiman, A. H. (Lunar and Planetary Inst. Houston, TX, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2005
Publication Information
Publication: Lunar and Planetary Science XXXVI, Part 4