华北中部太原组火山事件层与煤岩层对比——火山事件层的旋回性与煤岩层对比(Ⅱ)

Volcanic Event Strata and Correlation of Coals and Rocks of Taiyuan Formation in Central North China Cyclicity of Volcanic Event Strata and Correlation of Coals and Rocks(Ⅱ)

研究了华北中部太原组火山事件层，结果表明：火山事件期次对应事件层反映的喷发强度变化具有旋回性，一个火山事件旋回对应一次区域构造活动，火山事件旋回具有区域稳定性．籍此以火山事件层旋回划分对比为基础、结合火山事件层的期次分析对比，建立了火山事件等时面．应用火山事件等时面对研究区太原组主要煤岩层进行了对比。

It is a new investigation to carry out field correlation of coals and rocks using volcanic event strata.The eruption intensity possesses cyclicity reflected by the event strata corresponding to periods and times of the volcanic events. The volcanic event cycles show a steady development in the field, and one volcanic event is attached to one field tectonic movement.The researches show that the method is effective to form isotime faces combined with correlation and analysis of periods and times of volcanic events based on division and correlation of cycles of volcanic event strata.According to the isotime faces of volcanic events,the authors compared the main coals and rocks of Taiyuan formation in the studying area and put forward a new correlation method.