下扬子芜湖地区后期构造活动特征及其对古生界页 - Ingenta Connect.PDF

　 第38卷第5期 煤　 　 炭　 　 学　 　 报 Vol.38　 No.5　 　 2013年 5月 JOURNAL OF CHINA COAL SOCIETY May　 2013　 - - - 　 　 文章编号:0253 9993(2013)05 0890 06 下扬子芜湖地区后期构造活动特征及其对古生界 页岩气保存的影响 蔡周荣1,2,3 ,夏　 斌1,2,3 ,万志峰1,2,3 (1． 中山大学 海洋学院,广东 广州　 510275;2． 海洋石油勘探开发广东高校重点实验室,广东 广州　 510006;3． 广东省海洋资源与近岸工程重 点实验室,广东 广州　 510006) 摘　 要:通过野外地质考察,并结合区域构造演化背景分析,对芜湖地区后期构造的活动特征进行 了深入剖析,把对研究区古生界地层有重要影响的后期构造划分为印支期挤压推覆构造和燕山、喜 山期伸展构造,并进一步揭示了其构造迁移规律,认为芜湖地区古生界页岩气的保存受印支期逆冲 推覆构造影响较小,受燕山、喜山期伸展构造影响较大,这在该区未来页岩气勘探中应引起重视。 关键词:构造活动;古生界;页岩气;芜湖地区;下扬子地台 中图分类号:P618．13　 　 　 文献标志码:A The characteristics of later tectonic activities and their influence on the preservation of the Paleozoic shale gas in Wuhu area,Lower Yangtze Platform 1,2,3 1,2,3 1,2,3 CAI Zhou-rong ,XIA Bin ,WAN Zhi-feng (1．School of Marine Sciences,Sun Yat-sen University,Guangzhou　 510275,China;2．Guangdong University Key Laboratory of Offshore Oil Exploration and Development,Guangzhou　 510006,China;3．Guangdong ProvincialKey Laboratory of Marine Resources and Coastal Engineering,Guangzhou　 510006,Chi- na) Abstract:The characteristicsoflatetectonicactivitieswerestudiedinthispaperthroughthefieldgeologicalinvestiga- tion inWuhuarea.Combiningwiththeanalysisoftheregionaltectonicevolution,theauthorsproposethatthelatertec- tonic activitieswhich had important influence on the Paleozoic strata are divided into compressive nappe structure at Indo-China period and extensional structure at Yanshan and Himalayanperiod.Furthermore,the study revealsthetec- tonic migration regularity and that the shale gaspreservation of Paleozoic strata in Wuhu areawaslessaffected by the thrust nappetectonic