Mathematics – Logic
Scientific paper
Jan 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981icar...45..113b&link_type=abstract
Icarus, vol. 45, Jan. 1981, p. 113-123.
Mathematics
Logic
48
Fines, Igneous Rocks, Mars Surface, Planetary Composition, Planetary Evolution, Regolith, Basalt, Chemical Composition, Meteorites, Mineralogy, Pyroxenes, Silicates, Volcanoes, Mars, Source Medium, Soils, Regolith, Composition, Chemistry, Data, Mineralogy, Igneous Rocks, Analogs, Weathering, Comparisons, Magmas, Volatile Elements, Procedure, Techniques, Silicates, Kapoeta Meteorite, Volcanism, Komatites, Meteorites, Glasses, Models, Shergotty Meteorite, Samples, Martian
Scientific paper
The composition of the silicate portion of Martian regolith fines indicates derivation of the fines from mafic to ultramafic rocks, probably rich in pyroxene. Rock types similar in chemical and mineralogical composition include terrestrial Archean basalts and certain achondrite meteorites. If these igneous rocks weathered nearly isochemically, the nontronitic clays proposed earlier as an analog to Martian fines could be formed. Flood basalts of pyroxenitic lavas may be widespread and characteristic of early volcanism on Mars, analogous to maria flood basalts on the moon and early Precambrian basaltic komatiites on earth. Compositional differences between lunar, terrestrial, and Martian flood basalts may be related to differences in planetary sizes and mantle compositions of the respective planetary objects.
Baird Alexander K.
Clark Ben C.
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