High-pressure mafic granulites of the South Muya Block (Central Asian Orogenic Belt)

被引：3
|
作者：
Skuzovatov, S. Yu. [1 ]
Shatsky, V. S. [1 ,2 ,3 ]
Dril, S. I. [1 ]
机构：
[1] Russian Acad Sci, Vinogradov Inst Geochem, Siberian Branch, Ul Favorskogo 1a, Irkutsk 650033, Russia
[2] Russian Acad Sci, Siberian Branch, Sobolev Inst Geol & Mineral, Pr Akad Koptyuga 3, Novosibirsk 630090, Russia
[3] Novosibirsk Natl Res State Univ, Novosibirsk, Russia
来源：
DOKLADY EARTH SCIENCES | 2017年 / 473卷 / 02期
关键词：
CLINOPYROXENE; GEOCHEMISTRY; MINERALOGY; COMPLEX; AGE;
D O I：
10.1134/S1028334X17040067
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Mineralogical, petrographic, and geochemical studies of mafic granulites of the South Muya Block (Central Asian Orogenic Belt) have been carried out. The granulite protoliths were olivine- and plagioclase- rich cumulates of ultramafic-mafic magmas with geochemical affinities of suprasubduction rocks. The isotope-geochemical characteristics of the granulites indicate the enriched nature of their source, associated with recycling into the mantle of either ancient crust or oceanic sediments, or intracrustal contamination of melts at the basement of the ensialic arc. Formation of garnet-bearing parageneses has occurred during high-pressure granulite metamorphism associated with accretion in the eastern part of the Baikal-Muya composite terrane.
引用
收藏
页码：423 / 426
页数：4
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