摘要
通过对鄂尔多斯盆地上古生界不同成因泥质岩样品稀土元素分析表明,稀土元素在杂色泥质岩中较为富集,在暗色泥质岩中亏损;在细粒沉积物中富集,在粗粒沉积物中亏损。指出从稀土元素的区域变化来看,盆地北部的物源主要来自于北部阴山古陆,且北部物源具有明显的东西分带性;稀土元素富集受沉积分异作用控制,由北向南随着泥岩粒度变细,稀土元素特别是重稀土元素富集。
Based on the analysis of rare earth elements of the shale rock of the upper Palaeozonic in the Ordos basin, the rare earth elements are enrichment in variegated mudstone and are deficit in melanoeratie mud rock. Miner-grain sediment had a high pink and micro-grain one had a very weak. According to the regional distribution of rare earth elements, the source of the northern Ordos basin come form the Yinshan ancient land, and the source had zonation in east and west area. The sediment differentiation affections control the enrichment of rare earth element. With mudstone particle size become fine form north to south Ordos basin, rare earth elements had a very pink.
出处
《天然气地球科学》
EI
CAS
CSCD
2005年第6期788-791,共4页
Natural Gas Geoscience
基金
国家"十五"重点科技攻关项目"克拉通盆地天然气成藏规律与勘探技术研究"(编号:2004BA616A-03)资助
关键词
鄂尔多斯盆地
上古生界泥质岩
稀土元素
物源分析
The Ordos basin
The shale rock of the upper Paleozoic
Rare earth elements
The analysis of the sedimentary provenance,