东昆仑东端苦海-赛什塘地区晚古生代蛇绿岩的地质特征

王秉璋; 张智勇; 张森琦; 朱迎堂; 曹生秀

Volume 25 Issue 6

Jun. 2000

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Article Navigation > Earth Science > 2000 > 25(6): 592-598

WANG Bing-zhang, ZHANG Zhi-yong, ZHANG Sen-qi, ZHU Ying-tang, CAO Sheng-xiu, 2000. GEOLOGICAL FEATURES OF LOWER PALEOZOIC OPHIOLITE IN KUHAI-SAISHITANG REGION, EASTERN SECTION OF EASTERN KUNLUN. Earth Science, 25(6): 592-598.

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GEOLOGICAL FEATURES OF LOWER PALEOZOIC OPHIOLITE IN KUHAI-SAISHITANG REGION, EASTERN SECTION OF EASTERN KUNLUN

Qinhai Institute of Geology and Mineral Exploration, Xining 810012, China

Received Date: 1999-09-28
Publish Date: 2000-11-25

Abstract

Abstract

Mafic ultramafic rock blocks, consecutively distributed in Kuhai Saishitang region, are closely associated with each other in origin, as shown by their different geological features. These rock masses constitute the oceanic crust vestiges that once existed but later were broken. The petro geochemical features show that the rock masses originating from the enrichment mantle source similar to that of OIB or E MORB, may have occurred in the region above the initial spreading small oceanic basin or subduction zone. The isotope dating references show that the initial spreading of the oceanic basin may have occurred in D 3, and the subduction may have occurred in P₁-P₂.
- ophiolite,
- genesis,
- eastern Kunlun

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References(10)

References

[1]	[1]李福东, 张汉文, 宋治杰, 等. 鄂拉山地区热水成矿模式[M]. 西安: 西安交通大学出版社, 1993. 9~16.
[2]	Irvine T N, Barager W R. A guide to the chemical classification of the common volcanic rock[J]. Can J Earth Sci, 1971, 8: 523~548. doi: 10.1139/e71-055
[3]	Pearce J A. 玄武岩判别图"使用指南"[J]. 国外地质, 1984, (11): 1~13.
[4]	Pearce J A. Trace element characteristics of lavas from destructive plate boundaries[A]. In: Thorps R S, ed. Andesites[C]. Chichester: J Wily & Sons, 1982. 525~548.
[5]	李昌年. 火成岩微量元素岩石学[M]. 武汉: 中国地质大学出版社, 1992.
[6]	Pearce J A, Cann J R. Ophiolite origin investigated by discriminant analysis using Ti, Zr and Y[J]. Earth Planet Sci Lett, 1971, 12: 339~349. doi: 10.1016/0012-821X(71)90220-2
[7]	肖序常. 从扩张速率试论蛇绿岩的类型划分[J]. 岩石学报, 1995, (11): 10~24. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB5S1.001.htm
[8]	汤耀庆, 高俊, 赵明, 等. 西南天山蛇绿岩和蓝片岩[M]. 北京: 地质出版社, 1995. 59~62.
[9]	Wood D A. The application of a Th-Ha-Ta diagrams to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basaltic lavas of the British Tertiary volcanic provinces[J]. Earth Planet Sci Lett, 1980, 50: 11~30. doi: 10.1016/0012-821X(80)90116-8
[10]	张以佛, 庞存廉, 李长利, 等. 可可西里-巴颜喀拉三叠纪沉积盆地的形成和演化[M]. 西宁: 青海人民出版社, 1997. 1~37.