北京西山东岭台组火山岩含水量的测定及地质意义  

DETERMINATION OF WATER CONTENT IN VOLCANICROCKS OF DONGLINGTAI FORMATION, WESTERNMOUNTAIN, BEIJING, AND ITSGEOLOGICAL SIGNIFICANCE

作　　者：魏海泉[1] 

机构地区：[1]中国地质大学

出　　处：《现代地质》1991年第4期407-414,共8页Geoscience

摘　　要：东岭台期火山活动分5个阶段。各阶段均具独特的爆发特征,以第3阶段爆发性最强。本文用不同的测量和计算方法,讨论了不同阶段火山活动产物中水含量的变化特征,并从挥发份角度探讨了火山活动爆发强度的制约因素。The volcanic activity in the Donglingtai period, may be subdivided into five stages, and it shows a typical explosive character. The author gives here the different measuring ways of volatiles and the results. It is considered that the water i. e. , its amounts and facies play an important role in the controlling of volcanic explosive types.

关 键 词：火山岩 含水量 测定 北京 东岭台组 

分 类 号：P588.14[天文地球—岩石学]