【摘要】 通过昆阳群下四组地层岩石野外详细观察与室内研究，识别出下四组地层，特别是因民组、落雪组地层存在多种水力破裂作用的产物：水力破裂岩、刺穿碎裂岩(角砾岩)和张性裂隙、断裂－充填脉体。在描述了主要地质特征后，讨论了它们发生的流体来源、流体压力异常形成的边界条件及其产生水力破裂的流体压力判据和形成时代。指出高孔隙流体作用下的地层水力破裂及在破裂基础上递进发生的逆冲推覆断裂作用,给解释一个长期有争议的滇中昆阳群刺穿构造形成机制问题提供了新思路。更多还原

【Abstract】 Based on the field investigation and the room research on the Kunyang Group,many kinds of hydraulic fracturing products,hydraulic fracturing rock,diapiric cataclasite (breccia) and fault－ full vein,are recognized out in the lower four formations within the Kunyang Group,especially in the Yingmin and Luoxue Formations.After describing their features,the authors discuss the fluid origin of hydraulic fracturing,the boundary condition of formation of fluid pressure anomaly and the criterion of fluid pressurs as well as the timing of hydraulic fracturing,and believe that strata rupture under high pore fluid pressure and progressive thrusting taking place on the base of strata rupture provide a new explanation for mechanism of formation of diapiric structure in the Kunyang Group of central Yunnan.更多还原