CAJ | 학술논문

针对川南地区上二叠统龙潭组煤系地层埋深和厚度变化大的特点，以沉积岩石学、层序地层学的理论方法为指导，综合前人研究成果，通过对石宝矿段内上二叠统龙潭组野外露头、钻井岩芯和物探测井资料的研究，识别出区域不整合面、河流冲刷侵蚀面、岩性、岩相转换面和最大海泛面4种层序界面及其物质表现形式，并将其划分为3个长期基准面旋回层序（LSC1-LSC3）和若干中期基准面旋回层序。运用等时对比法，进行连井层序地层对比，建立了等时地层格架。根据基准面旋回升降趋势对各长期旋回层序内物质变化规律和成煤机制进行了系统的描述。认为对石宝矿段的煤层气勘探开发工作具有重要意义。
침대천남지구상이첩통룡담조매계지층매심화후도변화대적특점，이침적암석학、층서지층학적이론방법위지도，종합전인연구성과，통과대석보광단내상이첩통룡담조야외로두、찬정암심화물탐측정자료적연구，식별출구역불정합면、하류충쇄침식면、암성、암상전환면화최대해범면4충층서계면급기물질표현형식，병장기화분위3개장기기준면선회층서（LSC1-LSC3）화약간중기기준면선회층서。운용등시대비법，진행련정층서지층대비，건립료등시지층격가。근거기준면선회승강추세대각장기선회층서내물질변화규률화성매궤제진행료계통적묘술。인위대석보광단적매층기감탐개발공작구유중요의의。
Upper Permian Longtan Formation coal-bearing strata in southern Sichuan region is characterized by the depth and thickness variation .Guided by the theories and methods of the Sedimentary petrology and sequence stratigraphy ,through consolidated results of previous studies ,the authors divided the Upper Permian Longtan Formation in the Shibao ore block of South Sichuan into 3 long-term sequence (LSC1-LSC3) and many medium-term sequences through comprehensive study of outcrops ,coring ,logging and seismic data . According to the identified four kinds of sequence boundary and its manifestations substances , including regional unconformity , fluvial erosion surface , lithology , lithofacies conversion surface and maximum flooding surface ,the long-term base-level cycles in each cycle of the material change and mechanism of coal accumulation has been described .By multi-well sequence stratigraphy contrast , isochronous stratigraphic framework has been established that has important implications for coalbed methane exploration and mine development work Shibao ore block .