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福建西部中石炭世地层以往被认为有两套不同岩性组合,一套以碳酸盐沉积为特征的灰岩、白云岩等,另一套以碎屑沉积为主的砂、泥、硅质岩。前者称黄龙组(C_2h),后者称经畬组(C_2j),二者为同期异相产物。还认为中石炭世的(竹蜓)类化石自下而上仅有:Profusulinella和Beedeina-Fusulina两个组合带,其下缺失Pseudostaffella带。最近,在1:50000区域地质调查中,我们在宁化泉上、湖村、石洞峡,清流嵩溪等地系统地测制了林地组(C_1l)之上、黄龙组之下的一套以硅质岩为主、
The Middle Carboniferous formations in western Fujian have historically been characterized by two sets of lithologic assemblages, a suite of limestone, dolomite and other sediments characterized by carbonate deposition and another set of sand, mud and siliceous sediments dominated by clastic sediments rock. The former said Huanglong group (C_2h), which said by She group (C_2j), both for the same period of heterogeneous products. It is also believed that the Carboniferous (bamboo-dragonfly) fossils from the bottom up contain only two combinations of Profusulinella and Beedeina-Fusulina with the Pseudostaffella zone missing. Recently, in the 1: 50000 regional geological survey, we systematically measured the woodland group (C_1l) on the Ninghuashangshang, Hucun, Shidongxia, Songli and Qingxi areas, Silicalite-based,