松辽盆地及周边地区石炭纪—二叠纪岩相古地理
Sedimentary facies and palaeogeography of the Songliao Basin and its peripheral areas during Carboniferous-Permian time
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摘要: 松辽盆地深层拥有丰富的天然气资源,具备现实的勘探前景。通过松辽盆地周边地区石炭纪—二叠纪岩相古地理研究,结合盆地内钻井及地球物理资料,松辽盆地石炭纪属于滨浅海环境,由北往南海水加深;早二叠世为浅海-深浅海环境,由东向西海水变深;而晚二叠世为陆相或海陆交互相环境,海水向南变深。Abstract: The tremendous oil reserves reside in the deeper parts of the Songliao Basin. The basin, judged from the sedimentary facies and palaeogeography during the Carboniferous to Permian in integration with the well logs and other geophysical data, was located in the littoral and shallow-marine environments during the Carboniferous with the sea water gradually deepening from north to south; neritic-deeper neritic environments during the Early Permian with the sea water gradually deepening from east to west, and continental and/or alternative marine-continental environments during the Late Permian with the sea water gradually deepening from north to south again.