Read "The significance of Late Devonian ophiolites in the Variscan orogen: a record from the Vosges Klippen Belt, International Journal of Earth Sciences" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The BNSZ ophiolites were emplaced southward onto the Lhasa terrane as the Bangong-Nujiang ocean basin closed during the Late Jurassic–Early Cretaceous (Kapp et al., 2003). Serpentinization of Peridotite may explain the origin of Ninetyeast ridge and presence of … Choose from 7 different sets of ophiolite flashcards on Quizlet. Many investigators interpret ophiolites as slices of oceanic crust which have been technically emplaced in orogenic belts. Supra-subduction zone (SSZ) ophiolites have the geochemical characteristics of island arcs but the structure of oceanic crust and are thought to have formed by sea-floor spreading directly above subducted oceanic lithosphere. Full text links . Learn ophiolite with free interactive flashcards. Tectonic significance of the geochemistry and petrology of ophiolites in southeast Anatolia, Turkey. ... (Hatay) ophiolite was thrust over the Arabian passive margin in the south. No abstract provided. Abstract . These ophiolites are tectonically intercalated with thick sequences of Jurassic flysch, mélange, and volcanic rock assemblages. Michael J. Oard O phiolites are claimed to be pieces of ocean crust and upper mantle that have been thrust up onto continental crust and are now found in mountains, mainly along continental margins.1,2 An ideal ophiolite suite consists from 1). Nature, 01 May 1971, 231(5297): 17 DOI: 10.1038/231017a0 PMID: 16062537 . meaning of ophiolites? The BNSZ ophiolites were emplaced southward onto the Lhasa terrane as In addition, some ophiolites contain both high-Cr and high-Al chromitites in the same peridotite body (Xiong et al., 2015-in this issue). These ophiolites are tectonically intercalated with thick sequences of Jurassic flysch, mélange, and volcanic rock assemblages. The significance and origin of ophiolites is a matter of interest to geologists. Significance of ophiolites. Karipi S, Tsikouras B, Hatzipanagiotou K, Grammatikopoulos TA (2007) Petrogenetic significance of spinel-group minerals from the ultramafic rocks of the Iti and Kallidromon ophiolites (Central Greece). Lithos 99:136–149 CrossRef Google Scholar Geochemistry and tectonic significance of ophiolites along the İzmir -Ankara -Erzincan Suture Zone in northeastern Anatolia Northeastern Anatolia is characterized by two large tectonic units, namely the Eastern Pontides and the Eastern Taurides (Fig. Instead, they are usually strewn along mountain ranges in isolated bodies. As a result, very few ophiolites have all the parts of the typical oceanic crust. Ophiolites are almost always broken apart, so the peridotite, gabbro, sheeted dikes and lava layers don't stack up nicely for the geologist. Share this article Share with email Share with twitter Share with linkedin Share with facebook. Sheeted dikes are usually what is missing. In some ophiolites, the Cr# of chromitites varies spatially (Ahmed and Arai, 2002) and vertically (Rollinson, 2008) in the mantle section.
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