- 责任者：Yang Jianxu (State Key Laboratory for Mineral Deposits Research ; School of Earth Sciences and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Yin Hongwei
- 刊名：Geotectonica et Metallogenia
- 出版年：2013
- 卷期：37(4)
- 关键词：钾盐矿床 ; potash deposit ; 云南 ; Yunnan Province
- 页码：p.633-640
- 图表：2 illus., 4 tables, 41 refs.
- 分类号：1002
- issnNo：ISSN1001-1552
- isbnNo：CN44-1595/P
The Lanping-Simao Basin is an important potash basin in western Yunnan province. In this paper, we study the potash deposit potential of the basin by systemic analysis of the tectonic evolution, paleogeography, paleoclimate, distribution of salt deposition and geochemical characteristics. The geochemical characteristics of Br and 87Sr/86Sr reflect that the salts maybe originated from sea water. Based on geological setting analysis, we suggest that the Late Triassic and Jurassic are important salt-forming eras of the Lanping-Simao Basin, and there may be a thick layer of source salt at the depth of the basin, with huge potash potential. With analysis of 87Sr/86Sr ratio, we argue that the potassium deposits in the Mengyejing area were sourced from the deep buried Mesozoic evaporate strata. We suggest that attention should be paid to the deep buried Mesozoic evaporate strata in the future potash exploration in Southwestern Yunnan.