| 四川省剑门关一带晚侏罗世沉积体系与古环境演化 |
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| 引用本文： | 徐世球,佘继完.四川省剑门关一带晚侏罗世沉积体系与古环境演化[J].地球科学,2001,26(3):235-240. |
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| 作者姓名： | 徐世球 佘继完 |
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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 |
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| 基金项目： | 国土资源部国际合作与科技司项目!(No .0 0 0 12 0 0 7) |
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| 摘 要： | 晚侏罗世是龙门山前陆盆地演化的关键时期 ,因而沉积体系与古环境演化研究具有重要意义 .运用比较沉积学的方法 ,通过对沉积序列与旋回的详细研究 ,将研究区晚侏罗世沉积体系分为湖泊沉积体系、三角洲沉积体系、冲积扇沉积体系以及河流沉积体系 ;基于沉积背景和演化的分析 ,确定龙门山推覆构造带是研究区晚侏罗世古环境演化和沉积体系空间配置的控制因素 ;依据古流和物源分析 ,确定西北部的龙门山是本区主要物源区
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| 关 键 词： | 沉积序列 沉积体系 古环境演化 晚侏罗世 四川省剑门关 |
| 文章编号： | 1000-2383(2001)03-0235-06 |
| 修稿时间： | 2000年12月13 |
DEPOSITIONAL SYSTEM AND PALEOENVIRONMENTAL EVOLUTION IN LATE JURASSIC IN JIANMENGUAN AREA, SICHUAN PROVINCE, CHINA |
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| Xu Shiqiu,She Jiwan.DEPOSITIONAL SYSTEM AND PALEOENVIRONMENTAL EVOLUTION IN LATE JURASSIC IN JIANMENGUAN AREA, SICHUAN PROVINCE, CHINA[J].Earth Science-Journal of China University of Geosciences,2001,26(3):235-240. |
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| Authors: | Xu Shiqiu She Jiwan |
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| Abstract: | Late Jurassic is an important period of Longmenshan foreland basin development. It is of great significance to study its depositional system and paleoenvironmental evolution. According to comparative sedimentology and the study of sedimentary sequences and cycles, Upper Jurassic in the study area can be divided into lake, delta, alluvial fan and fluvial depositional systems. The depositional setting and evolution analyses reveal that Longmenshan nappe structure belt should be responsible for the paleoenvironmental evolution and depositional system disposition of the study area in Late Jurassic. The research results show that the main provinces come from Longmengshan mountain in the northwestern part of the study area. |
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| Keywords: | sedimentary sequence depositional system paleoenvironmental evolution Late Jurassic Jianmenguan area of Sichuan Province |
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