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We have examined the systematics of Re abundances in concert with new and published data on major and trace elements in oceanic basalts. Re abundances in MORB average 927 ppt (parts per trillion), a factor of 2.6 higher than the OIB average (350 ppt). The variability of Re abundances in both MORB and OIB is only 45%, similar to moderately incompatible major and trace elements such as Ca, Al, and...
Basaltic lavas were erupted from a 40-km-long lineament near the Hobbs Coast of Marie Byrd Land, Antarctica, over the period from 11.7 m.y. to 2.3 m.y. ago. The lavas from the southernmost locality, Coleman Nunatak, are virtually constant in major, trace element and isotopic composition over this entire age span. Their high FeO-low Al 2 O 3 character indicates melting of garnet periodotite...
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