摘要
新疆西南天山拜什塔木地区的古近系渐新统苏维依组(E3s)是拜什塔木铜矿赋矿层位。文章通过对苏维依组的岩石化学、微量元素地球化学、稀土元素地球化学特征研究,认为其物源区环境为靠近活(被)动大陆边缘区;粒度分析表明沉积环境与海滨砂瀉湖砂、河流砂、沙丘砂等环境相近;盐度分析、氧化-还原分析、气候指数研究分析表明,苏维依组属于干热海退咸化湖相沉积。
Suweiyi formation （Eas） of Oligocene Series of Paleogene System in Baishentamu area, southwest Tianshan region, Xinjiang is a copper ore-bearing horizon. Based on research on the petrochemistry, trace element geochemistry, rare earth element geochemistry of the formation, it is considered that the provenance is close to an active（passive） continental margin. The particle size analysis indicates that sand in the formation is similar to those in coastal area, lagoon, river, sand dunes, a near shore sedimentary environment ; the analysis on salinity, oxidation-reduction, climate index, a transgressionaI-clry-hot salinized lake environment
出处
《地质找矿论丛》
CAS
CSCD
2014年第4期579-586,共8页
Contributions to Geology and Mineral Resources Research
基金
矿产资源调查评价专项项目(编号:1212011085071)资助
关键词
苏维依组(E3s)
沉积环境
物质来源
西南天山
新疆
Suweiyi formation（Eas）
sedimentary environment
material source
southwest tianshan re gion
Xinjiang
