| 我国钾盐找矿规律新认识和进展 |
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| 关键词:salt-forming basin salt- and potash-forming characteristics salt minerogenetic domain tectonic basement-controlled potash formation new clue to potash finding |
| 基金项目:中国地质调查局项目“钾盐资源调查评价”计划项目(包括工作项目“我国重点成盐盆地钾盐资源综合预测与靶区优选”(编号: 1212010918025)等10个工作项目)；973计划(编号: 2011CB403000)；NSFC-云南联合基金项目(编号: U0833601) |
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| Potash Exploration Characteristics in China: New Understanding and Research Progress |
| Based on a comparative study of potash-forming characteristics of potash deposits both in China and abroad, the authors have summarized the characteristics of China’s continental and marine saline basins and salt- and potash-forming characteristics in these basins, i.e. multiple phases of salt formation, difference in salt-forming ages, migration of salt-forming processes, diversity of component materials, as well as changes of saline basins in the late stage and presence of many liquid mineral deposits; redefined 3 salt minerogenetic domains and 1 salt minerogenetic belt; put forward China’s potash exploration strategy—taking marine evaporite basins as the main direction for potash exploration while exploring continental saline lakes and subsurface potash-bearing brine; proposed the new idea that China’s main ancient saline basins mostly occur in “quasi-cratons (continental blocks)” and especially all the marine saline basins occur in continental blocks with the Precambrian basement, as well as the new idea that potash salts were deposited in relatively active quasi-stable areas in a tectonically stable region and concentrated in relatively stable areas in a tectonically quasi-stable region; and developed the theory on potash exploration suited to the geological characteristics of China and thus effectively pushed forward simultaneous exploration of oil and potash. In addition, the authors also found several potash showings in Mid-Upper Jurassic strata in the southwestern Yunnan-northern Qiangtang area and particularly directed and arranged potash exploration in the Jurassic at depths of southwestern Yunnan and made unconventional progress; further narrowed the ring of potash exploration in the Ordovician of northern Shaanxi; led the implementation of “simultaneous exploration of oil and potash”; achieved major substantive progress in potash exploration in the Paleogene of the Kuqa subbasin of the Tarim basin; found a new Early Quaternary potash-rich horizon in the western Tarim basin; directed and made important progress in comprehensive surveys and assessments of minerals such as lithium and potash in special saline lakes on the Qinghai-Tibet Plateau; and discovered a group of large and medium-sized lithium- and potash-bearing salt lakes (particularly the large Dogai Coring lithium-boron (potash) salt lake) and made new progress in total-use technology. |
| ZHENG Mian-ping,ZHANG Zhen,ZHANG Yong-sheng,LIU Xi-fang,YIN Hong-wei.2012.Potash Exploration Characteristics in China: New Understanding and Research Progress[J].Acta Geoscientica Sinica,33(3):280-294. |
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