Physics – Geophysics
Scientific paper
Jul 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981sci...213...82a&link_type=abstract
Science, vol. 213, July 3, 1981, p. 82-89.
Physics
Geophysics
65
Basalt, Chemical Evolution, Earth Mantle, Geochemistry, Planetary Evolution, Geophysics, Magma, Ocean Bottom, Trace Elements
Scientific paper
It is noted that the trace element concentration patterns of continental and ocean island basalts and of mid-ocean ridge basalts are complementary. Estimates of the relative sizes of the source regions for these fundamentally different basalt types can be arrived at from the trace element enrichment-depletion patterns. Their combined volume occupies the greater part of the mantle above the 670 km discontinuity. It is pointed out that the source regions separated as a result of early mantle differentiation and crystal fractionation from the resulting melt. The mid-ocean ridge basalts source evolved from an eclogite cumulate that gave up its late-stage enriched fluids at various times to the shallower mantle and continental crust. The mid-ocean ridge basalts source is rich in garnet and clinopyroxene, while the continental and ocean island basalt source is a garnet peridotite that has experienced secondary enrichment. These relationships are found to be consistent with the evolution of a terrestrial magma ocean.
No associations
LandOfFree
Hotspots, basalts, and the evolution of the mantle does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hotspots, basalts, and the evolution of the mantle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hotspots, basalts, and the evolution of the mantle will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1690603