Geological Characteristics and Tectonic Setting of the KeGang Ophiolite
详细信息
- 责任者：Yin Degong (No.11 Geological Team ; Xinjiang Bureau of Geology and Mineral Resources ; Changji 831100 ; China) ; Gao Jun
- 刊名：Xinjiang Geology
- 出版年：2013
- 卷期：31(3)
- 关键词：蛇绿岩 ; ophiolite ; 塔里木板块 ; Tarim Plate
- 页码：p.141-147
- 图表：5 illus., 5 tables, 15 refs.
- 分类号：0801
- issnNo：ISSN1000-8845
- isbnNo：CN65-1092/P
摘要
KeGang ophiolite is located in Tarim Plate in the southwestern margin of the western Kunlun intermediate massif and the north side of West Kunlun trench-arc with the dividing line.In this paper,the study on rock composition of KeGang ophiolite belt and geochemical characteristics affirmed the understanding of "Trinity" ophiolite-built in KeGang ophiolite belt,from the lower part of the metamorphic peridotite phase,the central cumulate facies,light-colored granite phase,the upper part of massive gabbro-diabase phase and volcanic rocks and clastic rocks,respectively.KeGang ophiolite is orogenic type,obviously different from the Mid-ocean ridge ophiolite.The tectonic environment should be quickly extensional environment product of back-arc basin or small ocean basin of destructive continental margin.
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