| 川西北壤塘地区三叠纪西康群极低级变质作用 |
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| 引用本文： | 梁斌,何文劲,谢启兴,朱兵. 川西北壤塘地区三叠纪西康群极低级变质作用[J]. 矿物岩石, 2003, 23(1): 42-45 |
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| 作者姓名： | 梁斌 何文劲 谢启兴 朱兵 |
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| 作者单位： | 中国地质大学地球科学学院,湖北,武汉,430074;四川省地勘局川西北地质队,四川,绵阳,621000 |
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| 基金项目： | 国土资源部 1∶ 5× 10 4上杜柯、南木达幅区域地质调查项目 |
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| 摘 要： | 通过区域地质调查和伊利石的结晶度指数、晶格参数（bo）的测定,揭示川西北壤塘地区三叠纪西康群遭受了区域极低级变质作用,进一步讨论区域极低级变质作用与构造变形的关系,并指出区域极低级变质作用是成岩－埋藏变质作用（造山前）和同造山变质作用的综合结果。
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| 关 键 词： | 极低级变质作用 伊利石结晶度 西康群 川西北 |
| 文章编号： | 1001-6872(2003)01-0042-04 |
| 修稿时间： | 2002-05-17 |
REGIONAL VERY LOW-GRADE METAMORPHISM OF TRIASSIC XIKANG GROUP IN RANGTANG AREA,NORTHWEST SICHUAN |
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| LIANG Bing ,HE Wen jing ,XIE Qi xing ,ZHU Bin. REGIONAL VERY LOW-GRADE METAMORPHISM OF TRIASSIC XIKANG GROUP IN RANGTANG AREA,NORTHWEST SICHUAN[J]. Journal of Mineralogy and Petrology, 2003, 23(1): 42-45 |
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| Authors: | LIANG Bing HE Wen jing XIE Qi xing ZHU Bin |
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| Affiliation: | LIANG Bing 1,HE Wen jing 2,XIE Qi xing 2,ZHU Bin 2 1.Institute of Earth Science,China University of Geosciences,Wuhan 430074,China, 2.Northwest Sichuan Geological Party,Mianyang 621000,China |
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| Abstract: | Regional geological research and analysis of illite crystallinity,b 0 parameters indicated that Triassic Xikang Group underwent a regional very low grade metamorphism in Tangtang area, northwest Sichuan. Relation between regional very low grade metamorphism and regional deformation discussed in the paper. Regional very low grade metamorphism resulted from the combination of early diagenesis burial metamorphism(pre orogeny)and late syn orogeny metamorphism. |
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| Keywords: | very low grade metamorphism illite crystallinity Xikang Group northwest Sichuan |
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