Mafic Magma Intraplating: Anatexis and Hybridization in Arc Crust, Bindal Batholith, Norway
نویسندگان
چکیده
منابع مشابه
Magma hybridization in the middle crust: Possible consequences for deep-crustal magma mixing
The 465 Ma Svarthopen pluton in northcentral Norway was emplaced under middle-crustal conditions (~700 MPa) into metasedimentary rocks of the Helgeland Nappe Complex. The pluton is characterized by zones of mingling and mixing of gabbro/ diorite with peraluminous, garnet-bearing biotite granite. Variation in bulk-rock Sr and Nd isotope ratios are consistent with simple mixing; however, nonunifo...
متن کاملThe Middle Triassic Meiwu Batholith, West Qinling, Central China: Implications for the Evolution of Compositional Diversity in a Composite Batholith
An integrated study involving whole-rock and Sr–Nd–Hf isotope geochemistry and zircon geochronology and trace element combined with detailed field investigation was carried out for the composite Meiwu batholith in the West Qinling orogenic belt of central China to probe the origins of its compositional diversity and its emplacement history. The batholith is composed of quartz diorite, granodior...
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 ...
متن کاملSimulations of crustal anatexis: Implications for the growth and differentiation of continental crust
There is overwhelming and incontrovertible petrological and geophysical evidence for the significant role played by mantle-derived mafic magma in the generation and growth of continental crust. Likewise, intrusion of mafic magmas beneath or into continental crust is very likely the major source of enthalpy that drives intracrustal differentiation. A simple dynamical model has been constructed t...
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ژورنال
عنوان ژورنال: Journal of Petrology
سال: 2002
ISSN: 1460-2415
DOI: 10.1093/petrology/43.12.2171