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| Titel |
New insights into crustal evolution studies from Sr isotopes |
| VerfasserIn |
Bruno Dhuime, Jamie Lewis, Emilie Bruand, Chris Hawkesworth |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250089961
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| Publikation (Nr.) |
 EGU/EGU2014-4173.pdf |
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| Zusammenfassung |
| Because of the poor preservation of rocks and minerals after billions of years of crustal
evolution, major uncertainties still remain about the composition of new/juvenile continental
crust and hence the conditions and tectonic setting(s) under which it was formed. One way to
evaluate the composition of the new continental crust is to estimate the time-integrated
parent/daughter ratios of isotope systems in crustal melts derived from that new crust. 87Rb
decays to 87Sr with a long half-life (~48.8 Ga) relative to the age of Earth, and because of
the different partitioning characteristics of Rb and Sr within the crust (DRb <
DSr |
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