摘要
花岗岩的多样性决定了对花岗岩成因的各种解释。对贺兰山中段黄旗口元古代地层中存在于花岗岩中“层理”、“残留体”等地质现象进行研究 ,认为该地区花岗岩是由元古代沉积岩经过变质交代作用而形成的 ,这种变质交代作用可能发生在古元古代 。
The diversity of granites resulted in various genetic explanations of granites. Based on the stu- dies of the “bedding” and “sedimentary relic” of granite in the Proterozic strata at Huangqikou of the middle part of Helanshan, the authors think that the Proterozoic granite in the area was produced by metasomatic metamorphism, which formed during the time when the earth crust became thinner.
出处
《地层学杂志》
CSCD
北大核心
2004年第3期276-280,共5页
Journal of Stratigraphy
基金
高等学校博士学科点专项科研资金资助课题 (批准号 :19990 2 843 7)
关键词
贺兰山
宁夏
元古代
花岗岩成因
Helanshan, Ningxia, Proterozic,genesis of granite
