摘要
本文阐述该破火山口形成的地质背景、火山旋回划分、地层的岩相、岩性分布规律和断裂构造系统,进而追溯破火山口演化历史。
This paper elucidates the geological setting of the formation of the caldera elassification, of the volcanic rock cycles distribution laws of the strata facies and lithology as well as volcanofracture system, and dates back to the evolutionary history of the caldera.
出处
《华东地质学院学报》
1989年第3期33-42,共10页
Journal of East China Geological Institute
关键词
火山口
地质构造
古火山
caldera
gcological structure
basic feature
cycle of volanic activitv
evolatio
