Mesoarchean partial melting of mafic crust and tonalite production during high-T–low-P stagnant tectonism, Akia Terrane, West Greenland
نویسندگان
چکیده
منابع مشابه
Establishment of a 3.83-Ga magmatic age for the Akilia tonalite (southern West Greenland)
A recurring challenge to ion microprobe U^Pb zircon geochronology has been to discriminate between preservation of original igneous zircon populations and inherited grains. This has proved particularly problematic in studying the polyphase metamorphic rocks that dominate Early Archean gneissic terranes. For example, differing interpretations exist for the origin of complex zircon populations in...
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 کاملPostcollisional mafic igneous rocks record crust-mantle interaction during continental deep subduction
Findings of coesite and microdiamond in metamorphic rocks of supracrustal protolith led to the recognition of continental subduction to mantle depths. The crust-mantle interaction is expected to take place during subduction of the continental crust beneath the subcontinental lithospheric mantle wedge. This is recorded by postcollisional mafic igneous rocks in the Dabie-Sulu orogenic belt and it...
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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there is no doubt that human being needs to become integrated with industry and industry needs to be progressed, daily. on the other hand, serious events in industrial units specially in oil industries has been shown that such damages and events are industry related ones. the consequence of such events and damages which resulted in chemical and poisoned explosions and loss of life and property ...
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ژورنال
عنوان ژورنال: Precambrian Research
سال: 2020
ISSN: 0301-9268
DOI: 10.1016/j.precamres.2020.105615