内蒙准格尔煤田太原组地层中火山事件沉积研究

在野外观察的基础上,应用薄片分析及沉积环境分析的资料,对内蒙准格尔煤田太原组含煤建造中火山事件沉积的类型、特征及成因进行了初步的论证与探讨。重点分析了赋存于太原组第四——第五灰岩层位间的A层火山事件沉积,提出了火山碎屑水下重力流事件沉积的概念,并建立了形成模式。

Study on the Volcanic Event Deposit of Taiyuan Formation in Zhungeer Coal Field

On the basis of field observation and the information of the tectonic plat analysis, the authors demonstrate the features, geneses, and depositional types of the volcanic event de- posits of Taiyuan Formation in Zhungeer coal field.A detailed discussion for the features, distribution and the geneses of pyroclastic rock type A located between limestones No .4 and No.5 in Taiyuan formation has been made. The concept and the forming model of the pyroclastic gravity flow under the water are also put forward.