民和盆地炭山岭油页岩特征及成矿控制因素分析

利用炭山岭矿区钻井岩心和分析测试资料，对炭山岭矿区油页岩工业品质、有机质类型、有机质丰度和油页岩分布特征进行了研究，并对油页岩控制因素进行了分析，建立了炭山岭矿区油页岩成矿模式。研究结果表明：油四层形成于水进体系域发育时期，成因类型为湖泊-沼泽相腐泥腐殖型油页岩，油页岩品质较好；油三层形成于高水位体系域发育时期，成因类型为浅湖相腐殖-腐泥型油页岩。炭山岭矿区油页岩成矿主要受构造发育特征、沉积环境和古地貌特征等因素控制。

Analysis on the Characteristics of the Oil Shale in the Tanshanling Area,Minhe Basin and their Mineralization Controlling Factors

Based on drilling cores and analysis data,theindustrial qualities,types of organic materi-als and distribution characteristics of the oil shale in the Tanshanling area are discussed.The metallo-genic model of the oil shale has been set up based on analyzing controlling factors of the oil shale.Re-searchindicates that the high quality oil shale of the fourth mumber developedin a transgression periodand belong to sapropelic-humic type of oil shale of lacustrine-bogfacies.The oil shale of the third mum-ber developedin highstand systemtract,andits genetic type is of humosapropelic of shallowlacustrinefacies.The development of the oil shaleinthe Tanshanling area was apparently controlled bythe tecton-ic evolution,sedi mentary environment and paleo-topograph of the area then.