摘要
“三江”地区哀牢山带晚泥盆世和早石炭世硅质岩的产状、放射虫组合、硅同位素及稀土元素特征有明显的差异 :前者属于深海环境 ,当时为陆内裂谷 ;后者属于哀牢山蛇绿岩套组成单元 ,形成于半深海环境 。
Late Devonian (D 3) silicate and Early Carboniferous (C 1) silicate in Ailao Mountain belt, “Three_River” area, are quite different from each other in mode of occurence, Radiolaria association, Si isotope and REE character. The former was formed in a deep_sea environment, i.e., in an intracontinental rift, whereas the latter is a component unit of Ailao Mountain ophiolite suite formed in a bathyal environment, indicating that Ailao Mountain was a small oceanic basin at that time.
出处
《岩石矿物学杂志》
CAS
CSCD
北大核心
2001年第1期42-46,共5页
Acta Petrologica et Mineralogica
基金
国家自然科学基金! ( 49772 12 2 )
"九五"国家科技攻关计划! ( 96 - 914- 0 1- 0 3)
原地质矿产部资源与环境科技攻关课题! ( 95
