Document Type : Original Research Paper
Authors
1 M.Sc., School of Earth Sciences, Damghan University, Damghan, Iran
2 Associate Professor, School of Earth Sciences, Damghan University, Damghan, Iran
Abstract
Abstract
Forumad area is located in NW of Sabzevar, in NE of central Iran structural zone and in western part of Sabzevar ophiolite suite. The mantle section of Forumad ophiolite consists mainly of harzburgites, dunites, pyroxenitic dikes and choromititic lenses that contain brown to black Cr-spinels. The content of Cr2O3 and Al2O3 of Cr-spinels in harzburgites are between 32.6-53.1 and 15.6-34.8 wt%, respectively, and their Cr# ([100 × Cr/(Cr + Al]) atomic ratio]) is between 39- 69%. Relationship between Cr# of Cr-spinels and Fo of coexisting olivine (Fo=91-92%) and low contents of TiO2 (
Keywords
References
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