Other
Scientific paper
Mar 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28.1291s&link_type=abstract
Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 291.
Other
Meteoritic Composition, Magma, Pyroxenes, Crystallization, Basalt, Mineralogy, Trace Elements, Melting
Scientific paper
Diogenites have long been recognized as a major constituent of the HED meteorite group. Yet, their remarkable monotonous mineralogy has limited the extent diogenites have been used to reconstruct HED parent body (HEDPB) magmatism. Several studies exploring the trace element characteristics of diogenites have identified trace element systematics that appeared to mimic simple magmatic processes involving large degrees of fractional crystallization (FC). The authors suggest that this appears highly unlikely. Their goal is to explore other potential processes for the chemical variability of orthopyroxenes in diogenites and the relationship of diogenites to other HED lithologies. It is concluded that the diogenites represent orthopyroxene cumulates resulting from the FC of a series of compositionally distinct basaltic magmas. The best way to generate this suite of basaltic magmas is through either moderate degrees of fractional melting of an initially homogeneous source or partial melting of a heterogeneous source.
Fowler G.
Papike James J.
Shearer Charles K.
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