| 措勤盆地下白垩统郎山组生物礁的平面分布特征及意义探讨 |
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| 引用本文： | 陈明,王剑,谭富文,杜佰伟.措勤盆地下白垩统郎山组生物礁的平面分布特征及意义探讨[J].沉积与特提斯地质,2003,23(4):68-70. |
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| 作者姓名： | 陈明 王剑 谭富文 杜佰伟 |
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| 作者单位： | 1. 成都理工大学,地球科学学院,四川,成都,610059;成都地质矿产研究所,四川,成都,610082
2. 成都地质矿产研究所,四川,成都,610082 |
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| 基金项目： | 国土资源部"十五"重大基础研究项目"青藏高原重点沉积盆地演化与油气远景分析"(20010208)。 |
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| 摘 要： | 措勤盆地生物礁的分布有一定规律性,现今发现的8个生物礁剖面均分布于且坎-古昌-罗波-当穹错断裂两侧。结合该断裂带出现的放射虫硅质岩沉积和火山岩堆积,推测该断裂带不仅为控相断裂,而且曾经有深水沉积,由于后期的再次活动而消失于断裂带内部。断裂带两侧的生物礁应为台地边缘礁。
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| 关 键 词： | 下白垩统 生物礁 控相断裂 措勤盆地 西藏 |
| 文章编号： | 1009-3850(2003)04-0068-03 |
| 收稿时间： | 2003/11/10 0:00:00 |
| 修稿时间： | 2003年11月10 |
The planar distribution and significance of the organic reefs in the Lower Cretaceous Nangshan Formation in the Coqen Basin, Xizang |
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| CHEN Ming,WANG Jian,TAN Fu-wen,DU Bai-wei.The planar distribution and significance of the organic reefs in the Lower Cretaceous Nangshan Formation in the Coqen Basin, Xizang[J].Sedimentary Geology and Tethyan Geology,2003,23(4):68-70. |
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| Authors: | CHEN Ming WANG Jian TAN Fu-wen DU Bai-wei |
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| Abstract: | The Coqen Basin is located in the hinterland of the Qinghai-Xizang Plateau. Eight organic reef sections have been identified in the basin along the Qiekan-Guchang-Luobo-Dangqiongco fault zone. It is inferred, from the radiolarian siliceous rocks and volcanic rocks, that the fault zone should be a facies-controlling fault zone, where the deep-water deposits including platform-margin slope and basin deposits were once (accumulated). Afterwards these deep-water deposits disappeared within the fault zone due to subsequent reactivation of faulting. The organic reefs along the both sides of the fault zone should be assigned to the platform-margin reefs. |
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| Keywords: | Lower Cretaceous organic reefs facies-controlling fault Coqen Xizang |
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