aim it is found that there exists turbidite in lucaogou formation of middle permian in santanghu basin and it is necessary to clear the relationship between the turbidite and hydrocarbon.
目的为了解三塘湖盆地中二叠世芦草沟组发育的一套浊积巖沉积体与油气的关系。
the middle permian chihsia formation of south china is featured by nodular chert, which is of implications in the reconstruction of coeval paleogeography and paleoceanography.
燧石结核是华南地区二叠纪栖霞组的重要识别特征之一,其成因具重要的古地理、古海洋意义。
the middle permian maokou formation is generally overlain by the late permian emeishan basalts in eastern yunnan and western guizhou in the west of the yangtze platform.
上扬子西部滇东、黔西茅口组之上多为峨眉山玄武巖所覆盖,长期以来人们一直认为两者不存在沉积间断和地层剥蚀。
the early middle permian (qixian stage) reefs are discovered only in the glass mountains of north america, pamirs and aerge mountains in west china.
中二叠世栖霞期的礁仅发现于北美格拉斯山脉、帕米尔和我国的阿尔格山等地。
the middle permian strata is well-developed in the xiangxi area, western hubei.
鄂西香溪地区中二叠统发育良好。