甘肃肃南白泉门地区蛇绿混杂岩地质特征

孙晓猛，张旗，钱青

doi:10.11867/j.issn.1001-8166.1997.04.0340

地球科学进展 >

1997 , Vol. 12 >Issue 4: 340 - 350

DOI: https://doi.org/10.11867/j.issn.1001-8166.1997.04.0340

“北祁连山蛇绿岩及其构造背景研究”专辑

甘肃肃南白泉门地区蛇绿混杂岩地质特征

展开

长春科技大学工程技术学院　长春　130022；中国科学院地质研究所　北京　100029

孙晓猛,男,1954年出生,副教授,主要从事造山带地层及岩石学研究。

收稿日期: 1997-06-10

网络出版日期: 1997-08-01

基金资助

本文为国家自然科学基金项目“北祁连蛇绿岩特征、造山带演化及深部作用过程研究”(项目编号:49472101)研究成果之一。

收起

THE GEOLOGICAL AND GEOCHEMICAL FEATURES OF THE OPHIOLITIC MELANGE IN BAIQUANMEN AREA FROM SUNAN COUNTY,GANSU PROVINCE

Expand

Eingeering and Technology College,Changchun Science and Technology University,Changchun　130022；Institute of Geology,Chinese Academy of Sciences,Beijing　100029

Received date: 1997-06-10

Online published: 1997-08-01

Fold

摘要

通过对甘肃肃南白泉门地区不同构造岩块中的玄武岩、硅泥岩及砂岩的岩石学、地球化学及构造特征的综合研究,认为它们分别形成于洋脊、洋岛、岛弧、
板内及活动大陆边缘等多种环境。各种环境的块体相互混杂并与蛇绿岩的基性—超基性岩岩块混杂产出,形成蛇绿混杂岩。该蛇绿混杂岩是北祁连中段加里东俯冲杂岩体的重要组成部分。

关键词： 甘肃; 白泉门; 蛇绿混杂岩; 玄武岩; 硅岩; 砂岩; 形成环境

本文引用格式

孙晓猛，张旗，钱青 . 甘肃肃南白泉门地区蛇绿混杂岩地质特征[J]. 地球科学进展, 1997 , 12(4) : 340 -350 . DOI: 10.11867/j.issn.1001-8166.1997.04.0340

Abstract

The authors have made the comprehensive study on the petrology, lithogeochemistry and tectonic feature of basalts, silicalites, mudstones and sandstones in different tectonic block of Bai quanmen area of Sunan county, Gansu province and thought that they form separately in the environment of ocean ridge, oceanic island, continetal island arc, continental margin and intraplate. The blocks in the various environments mixed together and mixed and accumulated with a lot of ultrabasic rock blocks and formed the ophiolitic melange, which is the important unit of subduction complex body of the Northern Qilian Caledonides.

Key words： Gansu; Baiquanmen area; Ophiolitic melange; Basalt; Chert; Sandstone; Foming settings.

参考文献

1　冯益民,何世平.北祁连山及其邻区大地构造基本特征.西北地质科学, 1995, 6(1): 92-102.
2　夏林圻,夏祖春,徐学义.北祁连山构造-火山岩浆演化动力学.西北地质科学, 1995, 16(1): 2-28.
3　夏林圻,夏祖春,徐学义.北祁连山海相火山岩岩石成因.北京:地质出版社, 1996. 1-153.
4　冯益民,何世平.祁连山大地构造与造山作用.北京:地质出版社,1996.
5　张旗,孙晓猛,周德进,等.北祁连蛇绿岩的特征、形成环境及其构造意义.地球科学进展, 1997,12(4):366-393.
6　吴汉泉,冯益民,霍有光,等.北祁连山中段甘肃肃南奥陶系变质硬柱石蓝闪片岩的发现及其意义.地质论评,1990, 36(3): 277-280.
7　Nakamura E, Camphell I H, Shen S S. The influence of subduction processes on the geochemistry of Japanese alkaline basalts. Nature, 1985, 316: 55-58.
8　Sugicaki R, Yamamoto K, Adachi M. Triassic bedded cherts in central Japan are not pelagic. Nature, 1982, 298:644-647.
9　Murray R W. Chemical criteria to identify the depositional environment of chert: general principles and applications.Sedimentary Geology, 1994, 90: 213-232.
10　Bhatia, M R. Plate tectonics and geochemical composition of sandstone. J Geol, 1983, 91(6): 611-627.
11　Bhatia, M R. Rare earth element geochemistry of Australian Paleozoic graywacks and mudrocks: Provenace and tectonic control. Sed Geol, 1986, 45(1-2): 97-1.

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献