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10.1038/ncomms10665 http://scihub22266oqcxt.onion/10.1038/ncomms10665 C4757760!4757760!26879892     free     free     free Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Nat+Commun 2016 ; 7 (ä): ä Nephropedia Template TP {{tp|p=26879892|t=2016. Earth s oldest mantle fabrics indicate Eoarchaean subduction |pdf=|usr=}}{{26879892}} gab.com Text Earth s oldest mantle fabrics indicate Eoarchaean subduction JO: Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=26879892 #FOAvip The extension of subduction processes into the Eoarchaean era (4.0?3.6?Ga) is controversial. The oldest reported terrestrial olivine, from two dunite lenses within the ?3,720?Ma Isua supracrustal belt in Greenland, record a shape-preferred orientation of olivine crystals defining a weak foliation and a well-defined lattice-preferred orientation (LPO). [001] parallel to the maximum finite elongation direction and (010) perpendicular to the foliation plane define a B-type LPO. In the modern Earth such fabrics are associated with deformation of mantle rocks in the hanging wall of subduction systems; an interpretation supported by experiments. Here we show that the presence of B-type fabrics in the studied Isua dunites is consistent with a mantle origin and a supra-subduction mantle wedge setting, the latter supported by compositional data from nearby mafic rocks. Our results provide independent microstructural data consistent with the operation of Eoarchaean subduction and indicate that microstructural analyses of ancient ultramafic rocks provide a valuable record of Archaean geodynamics. Twit Text FOAVip Earth s oldest mantle fabrics indicate Eoarchaean subduction ????Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=26879892 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=26879892 #FOAvip English Wikipedia <ref>{{Cite pmid|26879892}}</ref> Earth s oldest mantle fabrics indicate Eoarchaean subduction #MMPMID26879892 Kaczmarek MA; Reddy SM; Nutman AP; Friend CRL; Bennett VC Nat Commun 2016[]; 7 (ä): ä PMID26879892show ga The extension of subduction processes into the Eoarchaean era (4.0?3.6?Ga) is controversial. The oldest reported terrestrial olivine, from two dunite lenses within the ?3,720?Ma Isua supracrustal belt in Greenland, record a shape-preferred orientation of olivine crystals defining a weak foliation and a well-defined lattice-preferred orientation (LPO). [001] parallel to the maximum finite elongation direction and (010) perpendicular to the foliation plane define a B-type LPO. In the modern Earth such fabrics are associated with deformation of mantle rocks in the hanging wall of subduction systems; an interpretation supported by experiments. Here we show that the presence of B-type fabrics in the studied Isua dunites is consistent with a mantle origin and a supra-subduction mantle wedge setting, the latter supported by compositional data from nearby mafic rocks. Our results provide independent microstructural data consistent with the operation of Eoarchaean subduction and indicate that microstructural analyses of ancient ultramafic rocks provide a valuable record of Archaean geodynamics. äEarth s oldest mantle fabrics indicate Eoarchaean subduction (epmc).pdf DeepDyve Pubget Overpricing