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一、引言在第四纪地质时期,火山活动和地震活动是威胁人类生存的两大自然灾害,这两种灾害形式有着明显的区域分布规律,搞清它们的活动特点与区域构造背景的关系,对于预报和减灾工作有着重要意义. 大同第四纪火山位于大同盆地东部的大同县和阳高县境内,由30多个小火山组成火山群.自1989年大同—阳高6.1级地震发生以来,该区中小地震频频发生.本文试图在搞清其构造活动的背景上,探讨该区第四纪火山活动和地震活动的内在联系.
I. INTRODUCTION During the Quaternary geological period, volcanic activity and seismic activity are two major natural disasters that threaten the survival of human beings. These two types of disasters have obvious regional distribution rules, clarify the relationship between their activity characteristics and the regional tectonic setting, For the prediction and mitigation work is of great significance.Major quaternary Datong volcano is located in the Datong and Yanggao County in the eastern part of the Datong Basin, volcanic group composed of more than 30 small volcanoes.Since the 1989 Datong-Yanggao MS6.0 earthquake occurred, Small and medium earthquakes occur frequently in this area.This paper tries to find out the tectonic activities in the context of Quaternary volcanic activity and seismic activity in this area is intrinsically linked.