| 摘要: |
| 笔者从区域沉积背景入手,对鄂尔多斯盆地陇东地区长3油层组泥岩稀土元素、碳酸盐岩岩屑、轻重矿物、砂岩粒度等进行综合分析研究,认为研究区内存在混合物源,物源方向主要有北东向和西南向,并初步判断,北东物源的边界大致在南梁-华池地区,西南物源的边界大约在悦乐地区。 |
| 关键词: 延长组 稀土元素 碳酸盐岩岩屑 轻重矿物 物源分析 鄂尔多斯盆地 |
| DOI： |
| 附件 |
|
| 基金项目:国家“973”重点科技攻关项目(2003CB214606)资助 |
|
| Provenance analysis of the Yanchang Formation in eastern Gansu,Ordos Basin |
| WU Xiao-bin, SUN Wei, WANG Jin-jun |
(1. Chengdu Institute of Geology and Mineral Resources, Chengdu 610082, Sichuan, China;
2. Department of Geology, Northwest University, Xi'an 710069, Shaanxi, China) |
| Abstract: |
| The synthetic analysis of REEs in mudstone,carbonate debris contents,light and heavy minerals and grain sizes of sandstone in the Chang-3 oil reservoirs shows that the sediments dominantly come from the northeast and southwest in eastern Gansu,Ordos Basin.The provenance boundaries are approximately arranged in the Nanliang-Huachi region in the northeast,and in the Yuele region in the southwest. |
| Key words: Yanchang Formation REE carbonate debris light and heavy mineral provenance analysis Ordos Basin |
