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本文将鄂西奥陶纪两河口早期碳酸盐台洼中重力沉积划分为6种类型:(1)塌积角砾岩;(2)滑动变形岩块;(3)滑塌砾屑灰岩;(4)碎屑流砾屑灰岩;(5)颗粒流含砾砂屑灰岩;(6)近源浊积灰岩.并指出这套重力沉积经历了三个演化阶段:①岩崩塌积阶段;②重力流发育阶段,③重力流衰减阶段.研究结果表明:鄂西低起伏碳酸盐台洼中重力沉积发生在海侵背景下,主要受同生构造活动控制.
In this paper, the gravitational sediments of the Early Ordovician troughs in the Ordovician and two estuaries in western Hubei are divided into six types: (1) sedimentary breccias, (2) sliding deformed rocks, (3) (4) Debris flow conglomerate limestone (5) Particle flow gravel sandy limestone (6) Near-source turbidite limestone, and pointed out that the gravity sedimentation experienced three stages of evolution: (1) (2) the stage of gravity flow development and (3) the phase of gravity flow decay.The results show that gravity sedimentation in the low-lying carbonate platform depression of western Hubei Province occurs under the background of transgression and is mainly controlled by the tectonic activity.