旺苍双汇下二叠统岩石特征与沉积环境分析  

The Features of the Lower Permian Rocks and Analysis of the Sedimentary Environment in Wangcang Area

作　　者：李蔚洋[1] 何幼斌[1] 刘杰[2] 

机构地区：[1]长江大学,荆州434023 [2]江汉油田采油工艺研究院,潜江434102

出　　处：《重庆科技学院学报（自然科学版）》2009年第1期5-7,11,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

摘　　要：旺苍双汇剖面位于四川盆地西北部,研究层位属于下二叠统。该套地层中主要岩性为生屑石灰岩,也可见眼球状石灰岩及硅岩等。通过对该地层中岩石特征及沉积环境等方面的分析,认为该区在研究层段内属于碳酸盐台地相。梁山期海侵开始,区内基本为滨岸沼泽环境。栖霞组早期海平面开始上升,之后虽然还存在海平面的升降运动,但一直到茅口组末期都一直为开阔台地相。Wangcang plane section is in the Northwest of Sichuan Basin, located in the Lower Permian. Its main rocks are the bioclastic Lime stones, secondly for augen Lime stones and cherts.According to the analysis of rocks features and sedimentary environment, the section pertains to carbonate tableland facies. Invasion of the sea began on the early stage of Liangshan formation.The most district is shoreland and swamp environment.Although in the early stage of Qixia formation the sea level began to rise, sealevel elevating movement was not stopped until the last stage of Maokou formation,it＇s still open platform facies.

关 键 词：下二叠统 碳酸盐台地相 开阔台地相 

分 类 号：TE121[石油与天然气工程—油气勘探]