摘要
风火山群的时代问题,历来是各家争议的焦点。就目前的资料看,存在两种较大的认识分歧。一种认为风火山群的时代应属白垩纪;另一种认为风火山群的时代应属古近纪。通过1∶25万区调填图和风火山群的地质特征,上、下接触关系,地貌特征,变质特征,化石资料及侵入体的相对年龄资料等综合分析,笔者认为风火山群的时代应属晚白垩世。
The paper about the age of Fenghuoshan group was a debated focus all along, based on the document, there are two different standpoints on it. The one regards that it belongs to Cretaceous period, and the other think that it belongs to Eogene period. According to Fenghuoshan group′s geological characteristics, geologic horizon contact relation, geomorphological characteristics, metamorphic characteristics, the age of fossil and relative age of intrusive body in 1∶250000 areal geological survey, we decide to put it in Late Cretaceous epoch.
出处
《西北地质》
CAS
CSCD
2004年第1期63-68,共6页
Northwestern Geology
基金
青藏高原北部空白区基础地质调查与研究<1:25万沱沱河
曲柔尕卡幅>联测区调(200213000001)
