| 下扬子区三叠纪古地理演化 |
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| 引用本文： | 程日辉,白云风,李艳博.下扬子区三叠纪古地理演化[J].吉林大学学报(地球科学版),2004,34(3):367-371. |
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| 作者姓名： | 程日辉 白云风 李艳博 |
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| 作者单位： | 吉林大学,地球科学学院,吉林,长春,130061 |
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| 基金项目： | 中国石油化工股份有限公司资助项目
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长春科技大学校科研和教改项目 |
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| 摘 要： | 下扬子区在三叠纪期间接受了早-中三叠世海相碳酸盐沉积、中-晚三叠世海陆交互相和陆相湖沼沉积.沉积相带的空间分布和古地理格局的变迁明显地受到区域构造的控制.区内盆地发育与演化是在华南板块与扬子板块、扬子板块与华北板块相互作用的背景下进行的.早-中三叠世末期的印支运动是下扬子区构造-古地理格局改变的决定性因素,使下扬子海盆闭合,沉积类型由海相沉积变为陆相沉积.下扬子区三叠纪古地理的演化特征也为板块碰撞提供了沉积证据.
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| 关 键 词： | 下扬子区 构造 古地理 板块碰撞 下扬子区 三叠纪 古地理演化 Lower Yangtze area Triassic paleogeography 证据 陆相沉积 板块碰撞 演化特征 海相沉积 沉积类型 扬子海盆 决定性因素 印支运动 背景 相互作用 华北板块 扬子板块 华南板块 |
| 文章编号： | 1671-5888(2004)03-0367-05 |
| 修稿时间： | 2003年9月29日 |
Evolution of paleogeography of Triassic of Lower Yangtze area |
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| CHENG Ri-hui,BAI Yun-feng,LI Yan-bo.Evolution of paleogeography of Triassic of Lower Yangtze area[J].Journal of Jilin Unviersity:Earth Science Edition,2004,34(3):367-371. |
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| Authors: | CHENG Ri-hui BAI Yun-feng LI Yan-bo |
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| Abstract: | Marine carbonate, marine-continental interbeded and continental sediments were accumulated in Lower Yangtze area during Triassic. The spatial distribution of sedimentary facies belts and the temporal changes of paleography were controlled by tectonics. Basin development and evolution in this area is related to the interactions of South China plate and Yangtze plate,as well as North China plate and Yangtze plate. Indochina movement occurred at the end of early-middle Triassic is the key control to the changes of tectonic-paleogeography, which led to the change from marine sedimentation to continental sedimentation. The characteristics of Triassic paleogeographic evolution of Lower Yangtze area also provide some sedimentary evidences for collision between Yangtze plate and North China plate. |
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| Keywords: | Lower Yangtze tectonic paleogeography collision of plate |
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