Relamination of mafic subducting crust throughout Earth's history
نویسندگان
چکیده
منابع مشابه
Differentiation of the continental crust by relamination
a r t i c l e i n f o Crust extracted from the mantle in arcs is refined into continental crust in subduction zones. During sediment subduction, subduction erosion, arc subduction, and continent subduction, mafic rocks become eclogite and may sink into the mantle, whereas more silica-rich rocks are transformed into felsic gneisses that are less dense than peridotite but more dense than the uppe...
متن کاملComment on "Neodymium-142 evidence for Hadean mafic crust".
O'Neil et al. (Reports, 26 September 2008, p. 1828) presented neodymium-142 data for rocks from northern Quebec, Canada, and suggested that these rocks may represent the oldest preserved crustal section on Earth. We argue that the age of the rocks is based on a spurious correlation between rocks that are probably not co-genetic and negative (142)Nd anomalies that may be the result of an analyti...
متن کاملJonathan O ' Neil , Neodymium - 142 Evidence for Hadean Mafic Crust
www.sciencemag.org (this information is current as of September 26, 2008 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/321/5897/1828 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/321/5897/1828/DC1 can be ...
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Subducted sediments play an important role in arc magmatism and crust–mantle recycling. Models of continental growth, continental composition, convergent margin magmatism and mantle heterogeneity all require a better understanding of the mass and chemical fluxes associated with subducting sediments. We have evaluated subducting sediments on a global basis in order to better define their chemica...
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The science of geography, also literally called in Arabic "faces and slices of earth", involves a kind of land survey which emerged into Islam. There were several factors contributing to geography such as command of Islam to learning, Quran geographical themes, pilgrimage routes and wide-range Muslim conquests. This article attempted to examine two major schools of geography in the Isl...
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ژورنال
عنوان ژورنال: Earth and Planetary Science Letters
سال: 2016
ISSN: 0012-821X
DOI: 10.1016/j.epsl.2016.05.042