滇西南景谷&mdash;镇沅地区第三纪重力流沉积及其地质意义

刘善印; 钟大赉; 吴根耀

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滇西南景谷—镇沅地区第三纪重力流沉积及其地质意义

刘善印, 钟大赉, 吴根耀

文章导航 > 沉积学报 > 1998 > 16(2): 50-54

刘善印, 钟大赉, 吴根耀. 滇西南景谷—镇沅地区第三纪重力流沉积及其地质意义[J]. 沉积学报, 1998, 16(2): 50-54.

引用本文:

刘善印, 钟大赉, 吴根耀. 滇西南景谷—镇沅地区第三纪重力流沉积及其地质意义[J]. 沉积学报, 1998, 16(2): 50-54.

Liu Shanyin, Zhong Dalai, Wu Genyao. Tertiary Gravity Flow Deposits in Jinggu-Zhenyuan Region, Southwestern Yunnan, and Their Geological Significance[J]. Acta Sedimentologica Sinica, 1998, 16(2): 50-54.

Citation:

Liu Shanyin, Zhong Dalai, Wu Genyao. Tertiary Gravity Flow Deposits in Jinggu-Zhenyuan Region, Southwestern Yunnan, and Their Geological Significance[J]. Acta Sedimentologica Sinica, 1998, 16(2): 50-54.

刘善印, 钟大赉, 吴根耀. 滇西南景谷—镇沅地区第三纪重力流沉积及其地质意义[J]. 沉积学报, 1998, 16(2): 50-54.

引用本文:

刘善印, 钟大赉, 吴根耀. 滇西南景谷—镇沅地区第三纪重力流沉积及其地质意义[J]. 沉积学报, 1998, 16(2): 50-54.

Citation:

滇西南景谷—镇沅地区第三纪重力流沉积及其地质意义

1.
中国矿业大学北京研究生部北京 100083;
2.
中国科学院地质研究所北京 100029

基金项目: 国家自然科学基金(编号: 49232030),中国博士后科学基金

详细信息

作者简介:
刘善印,男,33岁,博士后,沉积学及大地构造学

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Tertiary Gravity Flow Deposits in Jinggu-Zhenyuan Region, Southwestern Yunnan, and Their Geological Significance

1.
Beijing Graduate School, China University of Mining and Technology, Beijing 100083;
2.
Institute of Geology, Chinese Academy of Sciences, Beijing 100029

摘要

摘要: 本文通过详细的沉积学研究，讨论了滇西南景谷—镇沅地区第三纪重力流的沉积特征，包括碎屑流、颗粒流和浊流三种沉积类型。它们的发育直接受印度板块与欧亚板块碰撞及其后陆内变形的控制，是区域构造事件的响应。
- 重力流 /
- 碎屑流 /
- 颗粒流 /
- 浊流
Abstract: The Tertiary gravity flow deposits in the Jingg u-Zhenyuan region, southwestern Yunnan, can be divided into three types: debris flow, grain flow and turbidity current. Debris flow deposits are mainly composed of conglomerates, which are matrix supported and poorly sorted. Their grain-size distribution frequency curves are characterized by having only one major and some secondary peaks. Grain flow deposits are also mainly composed of conglomerates, which are identified by their matrix lacking features. Clasts in these deposits were cemented by ironoxides and clay minerals, as thin film around them. Their grain-size distribution frequency curves show multimodal distribution without major peak. Turbidity current deposits are mainly composed of sandstone, siltstone and mudstone, which are characterized by their Bouma sequence. Their grain-size cumulative proba bility curves and C-M diagram reflect features of low-density flow. Development of the gravity flow in the region, asresponse to regional tectonic evolution, was controlled by collisional processes of Indian continent with Eurasian continent and post-collisional intracon-tinental deformation.
- gravity flow /
- debris flow /
- grain flow /
- turbidity current

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参考文献(11)

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