Computer Science
Scientific paper
Feb 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000natur.403..530e&link_type=abstract
Nature, Volume 403, Issue 6769, pp. 530-534 (2000).
Computer Science
31
Scientific paper
Mid-ocean-ridge basalts (MORBs) are the most abundant terrestrial magmas and are believed to form by partial melting of a globally extensive reservoir of ultramafic rocks in the upper mantle. MORBs vary in their abundances of incompatible elements (that is, those that partition into silicate liquids during partial melting) and in the isotopic ratios of several radiogenic isotope systems. These variations define a spectrum between `depleted' and `enriched' compositions, characterized by respectively low and high abundances of incompatible elements. Compositional variations in the sources of MORBs could reflect recycling of subducted crustal materials into the source reservoir, or any of a number of processes of intramantle differentiation. Variations in 18O/16O (principally sensitive to the interaction of rocks with the Earth's hydrosphere) offer a test of these alternatives. Here we show that 18O/16O ratios of MORBs are correlated with aspects of their incompatible-element chemistry. These correlations are consistent with control of the oxygen-isotope and incompatible-element geochemistry of MORBs by a component of recycled crust that is variably distributed throughout their upper mantle sources.
Eiler John M.
Kitchen Nami
Schiano Pierre
Stolper Edward M.
No associations
LandOfFree
Oxygen-isotope evidence for recycled crust in the sources of mid-ocean-ridge basalts 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 Oxygen-isotope evidence for recycled crust in the sources of mid-ocean-ridge basalts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxygen-isotope evidence for recycled crust in the sources of mid-ocean-ridge basalts will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1501254