地质通报Issue(6)：874-882,9.
川东南地区茅口组岩溶古地貌恢复及特征
The restoration of karst ancient landform of the Maokou Formation in southeastern Sichuan basin
摘要
Abstract
The Dongwu Movement caused the exposure of Maokou limestone on the earth's surface and made it experience the su-pergene weathering process. Drilling reveals that the gas reservoir is closely related to the location and intensity of ancient landforms. Palaeogeomorphology is the main factor that affects the development and distribution of ancient karst. Southeastern Sichuan basin has had less drilling and is unevenly distributed, with insufficient exploration. Combining drilling with seismic survey, the authors exqui-sitely restored ancient karst landform of Maokou by applying the impression method and the residual method. A comparison of these two methods show that both methods can recover the same basic trend palaeogeomorphology. According to the geological features and practical data of the study area, the authors hold that the impression method has higher reliability. Based on an analysis of the an-cient water system, the authors divided the study area into karst highland, karst slope and karst basin by combining it with paleogeo-logic map and drilling. The NW-SE trending karst highland in the southwest of the study area has the same highland as the karst highland in Shunan area, but it is higher than Shunan area. The groundwater runoff and corrosion holes of the karst slope area make it a favorable area for karst exploration.关键词
川东南/茅口组/岩溶古地貌/印模法/岩溶斜坡Key words
southeastern Sichuan/Maokou Formation/karst landform/impression method/paleokarst slope分类
能源科技引用本文复制引用
胡修权,施泽进,田亚铭,王长城..川东南地区茅口组岩溶古地貌恢复及特征[J].地质通报,2014,(6):874-882,9.基金项目
国家自然科学基金委员会与中国石油化工股份有限公司联合基金项目 （）
