| 成盐理论引领我国找钾取得重要进展 |
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| 关键词:salt formation theory potash deposit prospecting gravel brine in Qaidam basin Kuqa depression of Tarim Paleogene potash-bearing ore beds Triassic polyhalite “two-storey” potash-forming model Ordovician salt basin |
| 基金项目:中国地质调查局地质大调查项目“油钾兼探实施方案和调查评价部署”(编号: 1212011085524);NSFC-云南联合重点基金项目(编号: U0833601) |
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| The Leading Role of Salt Formation Theory in the Breakthrough and Important Progress in Potash Deposit Prospecting |
| The salt formation theory has led to the breakthrough and important progress in potash deposit prospecting: a new type gravel brine layer rich in potassium was discovered in the early pre-Quaternary strata in Altun Mountains in the west of Qaidam Basin. This progress was made by the Salt Party of the Institute of Mineral Resources, Chinese Academy of Geological Sciences, headed by Professor ZhengMianping, academician of the Chinese Academy of Engineering, with such institutions as the Qaidam Comprehensive Exploration Institute of Geology and Mineral Resources as the co-researchers and under the joint support of geological survey projects and key projects of the National Natural Science Foundation of China. Drilling shows that it possesses the estimated resource quantity of 350 million tons and hence is likely to be the reserve base of potash salt in Qaidam Basin. Additionally, Paleogene potash-bearing ore beds with the thickness of 100 meters were found in Kuqa depression, Tarim, where there is a 41 meter-thick salt bed of potassium chloride that reaches industrial grade. Furthermore, Triassic polyhalite was found in Sichuan Basin, which is not only an important potassium source in deep brine rich in potash but also a precious slow-release potassium fertilizer. Besides, in Upper Yangtze River Basin, 13 potassium-rich brine deposits of brine-bearing structure were evaluated, and the potassium chloride resource is estimated to be 49.17 million tons. What is more, in Mengyejing of southwestern Yunnan Province, a “two-storey” potash-forming model was set up, and, in Ordovician salt basin of northern Shaanxi Province, the area of potash prospecting target area has been largely reduced, which shows the dawn of the breakthrough in marine potash prospecting. |
| ZHENG Mian-ping,HOU Xian-hua,YU Chang-qing,LI Hong-pu,YIN Hong-wei,ZHANG Zhen,DENG Xiao-lin,ZHANG Yong-sheng,GUO Ting-feng,WEI Zhao,WANG Xu-ben,AN Lian-ying,NIE Zhen,TAN Xiao-hong,ZHANG Xue-fei,NIU Xin-sheng.2015.The Leading Role of Salt Formation Theory in the Breakthrough and Important Progress in Potash Deposit Prospecting[J].Acta Geoscientica Sinica,36(2):129-139. |
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