Continental crust composition and nature of the lower crust; constraints from mantle Nd-Sr isotope correlation

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Authors:Weaver, B. L.; Tarney, J.
Volume Title:Nature (London)
Source:Nature (London), 286(5771), p.342-346. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836
Publication Date:1980
Note:In English. 44 refs.; illus. incl. tables
Summary:Calculations suggest that if the widespread upper-mantle depletion in lithophile elements, as represented by the negative correlation between Nd and Sr isotopes in basalts, has resulted from continental crustal extraction, then extraction of observed Archaean crustal compositions best explains the Nd-Sr isotope relationship. Much of the lower continental crust must, therefore, have the high Nd/Sm and low Rb/Sr ratios typical of Archaean granulites. (Authors' abstract) [B.A.]
Subjects:Alkaline earth metals; Archean; Composition; Continental crust; Crust; Geochemistry; Interpretation; Isotopes; Lewisian; Lower crust; Mantle; Metals; Metamorphic rocks; Neodymium; Precambrian; Proterozoic; Rare earths; Strontium; Theoretical studies; Upper Precambrian; Europe; Great Britain; Scotland; United Kingdom; Western Europe; Ratios
Coordinates:N544000 N610000 W0004500 W0083000
Abstract Numbers:82M/2882
Record ID:1981002568
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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