Volume 16, Issue 4 (1-2009)                   www.ijcm.ir 2009, 16(4): 602-611 | Back to browse issues page

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Geochemistry and petrogenesis of basaltic flows in the Nain-Dehshir ophiolites. www.ijcm.ir. 2009; 16 (4) :602-611
URL: http://ijcm.ir/article-1-611-en.html
Abstract:   (2491 Views)

Diabases, pillow lavas and basaltic flows in the Nain-Dehshir ophiolites are marked with flat to slightly depleted pattern in REE chondrite-normalized diagram and are characterized by depletion in HFSE and enrichment in LILE. This geochemical behavior can be considered for lavas erupted in arc-related environments. Clinopyroxene in these rocks shows low content of TiO2 and resemble those found in island-arc tholeiites. These characteristics are consistent with back-arc formation during middle to upper Cretaceous, due to the oblique subduction of Neotethyan Ocean along the active continental margin of the central Iranian block.

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Type of Study: Research | Subject: Special

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