The first find of spinel peridotite in the Southern Kazakhstan: Structure, composition, and parameters of high-pressure metamorphism

A. V. Pilitsyna; A. A. Tretyakov; T. A. Alifirova; K. E. Degtyarev; E. V. Kovalchuk

doi:10.1134/S1028334X17090069

The first find of spinel peridotite in the Southern Kazakhstan: Structure, composition, and parameters of high-pressure metamorphism

作者: Pilitsyna A.V.¹, Tretyakov A.A.¹, Alifirova T.A.², Degtyarev K.E.¹, Kovalchuk E.V.³
隶属关系:
1. Geological Institute
2. Sobolev Institute of Geology and Mineralogy, Siberian Branch
3. Institute of Geology of Ore Deposits, Mineralogy, Petrography, and Geochemistry
期: 卷 476, 编号 1 (2017)
页面: 982-985
栏目: Geology
URL: https://ogarev-online.ru/1028-334X/article/view/190661
DOI: https://doi.org/10.1134/S1028334X17090069
ID: 190661

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Spinel peridotite, metamorphosed in high-pressure conditions, was first described within the Western part of the Central Asian Orogenic Belt. The spinel peridotite has the characteristics of Mg–Cr ultramafites indicating the mantle origin of its protolith. The preliminary estimation of the metamorphism peak for the model system MgO–Al₂O₃—SiO₂–Cr₂O₃ (MASCr) is 10–19 kbar at 680–800°C.