通过对广东凡口矿区 2 14线 3号孔剖面岩石结构构造和生物化石组合的初步研究 ,认为该孔自上而下分别显示台地潮间带、台地潮下低能带、台地边缘高能带、深水盆地 (台槽 )、台地潮下低能带相环境。其中台槽所反映出的特点是窄、陡、深 ,它与铅锌矿黄铁矿菱铁矿成矿关系密切。对台槽相的研究 ,对我国南方泥盆系多金属硫化物矿床的找矿工作具有现实意义。 Based on the preliminary study on the rock structure and biofossil assemblage of No.3 hole in No.214 line in Fankou deposit, Guangdong Province, it is considered that this hole shows, respectively from top to bottom, the intertidal zone of the platform, the sub-tide under the platform, the high energy zone at the edge of the platform, Basin (Taiwan tank), low-lying environment with low-phase platform. The characteristics reflected by the trough are narrow, steep and deep, which are closely related to the mineralization of the lead-zinc ore pyrite siderite. The study of Taiwan trough facies has practical significance for the prospecting work of the Devonian polymetallic sulphide deposits in southern China.