摘要
闽清测区 1∶5万区调在运用火山岩双重填图法过程中 ,进一步改进了工作方法和程序 ,深化了火山地质研究 ,取得了显著成果。本区调工作以遥感地质为先导 ,在填图中从调查单个火山构造扩展到多个、多种火山构造组合叠置关系及火山群体的研究。从而填制出火山构造面貌清楚 ,具有较强立体感的古火山地质图 ,全面反映了不同时期 (阶段 )火山作用特点、演化规律及火山岩相的分布特征 ,合理地建立起火山岩地层格架。
The dual mapping method of volcanic sequence lithology lithofacies has been improved further in the course of the 1∶50 000 geological surveying in the Minqing area, Fujian. By using remote sensing images, not only separate volcanic structures, but also various kinds of superimposed volcano tectonic associations and volcanic groups were observed during the mapping. As a result, a geological map that shows the paleo volcanoes in the surveyed area was drawn up, with marked volcano tectonic features and sharp stereoscopic impression, thus reflecting the character of volcanism, evolutionary processes and volcanic facies distribution of different stages. And hence, a proper stratigraphic framework of volcanic sequences has been erected.
出处
《中国区域地质》
CSCD
2000年第2期198-204,共7页
Regional Geology of China
关键词
火山岩
火山构造组合
地质填图
地质调查
福建
dual mapping method used in volcanic terrains
associations of volcanic structures and their mutual relation
distribution framework
