地球科学进展 ›› 2012, Vol. 27 ›› Issue (10): 1054 -1060. doi: 10.11867/j.issn.1001-8166.2012.10.1054

矿床地球化学与成矿成因 上一篇    下一篇

川西坳陷平落坝构造富钾卤水成因探讨
张成江,徐争启,倪师军,尹 观   
  1. 成都理工大学地球化学与核资源工程系,四川 成都 610059
  • 收稿日期:2012-07-24 修回日期:2012-08-27 出版日期:2012-10-10
  • 通讯作者: 徐争启(1975-),男,甘肃正宁人,副教授,主要从事地球化学教学和研究工作.E-mail:xuzhengqi@cdut.cn
  • 基金资助:

    中国地质大调查项目“四川三叠纪富钾卤水富集规律及有利地区调查评价”(编号:1212010011803)资助.

Genesis of Potassiumbearing Brine in Pingluoba Structure Region, Western Sichuan Depression

Zhang Chengjiang,Xu Zhengqi, Ni Shijun, Yin Guan   

  1. Department of Geochemistry and Nuclear Resources Engineering, Chengdu University of Technology, Chengdu 610059, China
  • Received:2012-07-24 Revised:2012-08-27 Online:2012-10-10 Published:2012-10-10

川西坳陷平落坝构造区是我国目前发现的深层海相碳酸盐岩地层中钾离子浓度最高的构造区,同时伴有B,Br,I,Li等多种元素。从平落4井于20世纪90年代初发现富钾卤水以来,研究人员对富钾卤水的成因先后提出了多种认识,主要认为富钾卤水为原生海水沉积变质作用形成。然而,近年来研究发现有很多无法用沉积变质说解释的现象。为此,在研究过程中,不但追踪卤水中溶剂(水)的来源,还关注卤水中溶质的来源,得出了川西坳陷平落坝构造区富钾卤水属于多来源、多期次成因的结论。研究认为:①卤水中水的来源与古海水和成岩作用中含水矿物脱水有关;卤水中钾具有多源多期次成因特点,主要与原始海水浓缩有关,其次与含钾矿物的溶解有关,同时与二叠纪玄武岩、三叠纪绿豆岩及深部流体活动有关。②富钾卤水的成因模式为:膏盐盆地是富钾卤水形成的基础条件;断层是富钾卤水运移的主要通道;夹持在膏盐岩层之间的碳酸盐岩层是富钾卤水的良好储钾层;裂隙和孔洞是富钾卤水储集的主要空间;构造高点是富钾卤水主要储集场所;温度是富钾卤水品位高低的重要因素;厚度大的膏盐岩层是富钾卤水保存的可靠屏障。

With many subordinate useful components, such as boron, bromine, iodine and lithium, the Pingluoba structure region in Western Sichuan Depression is presently the highest concentration in Potassium ion of all the deep marine carbonate strata discovered in China. Since their discovery in the early 1990s at Well Pingluo 4, there are multiple viewpoints to the genesis of potassium-bearing brine. The chief argument is that the potassium-bearing brine is formed through sedimentarymetamorphism in the primary seawater. Some phenomena that cannot be fully explained by the sedimentarymetamorphic theory, have been discovered by the author in the study recently. Therefore, the paper traces the sources of both the solvent (water) and the solute of the brine during the study. Then, the author proposes the conclusions about the multi-source, multi-stage genesis of the potassium-bearing brine in Sichuan basin.① The source of solvent of the brine is related to ancient seawater and the dehydration process of hydrous minerals. According to its genetic characteristics of multi-source and multi-stage, the potassium in brine is mainly related to the concentration of primary seawater, and secondarily the dissolution of potassiumbearing minerals, as well as the Permian basalt, the Triassic green pisolites and some deep fluid activities. ② According to the study result, a genetic model of the potassium-bearing brine in Pingluoba structure region is presented. The gypsum-salt basin is the foundation of the potassium-bearing brine; the fracture constitutes the main channel; the carbonate strata, which lies between the gypsum-salt stratum, forms good reservoir; the fractures and pores are the main reservoir space; the structural highs are the effective storage sites; temperature is the important controlling factor for ore grade; and the gypsum-salt stratum of high thickness are the important secure protection for the preservation of the potassium-bearing brine.

中图分类号: 

[1]Zheng Mianping,Qi Wen,Zhang Yongsheng. Present situation of potash resources and direction of potash search in China[J]. Geological Bulletin of China,2006,25(11):1 239-1 246.[郑绵平,齐文,张永生.中国钾盐地质资源现状与找钾方向初步分析[J].地质通报,2006,25(11):1 239-1 246.]

[2]Lin Yaoting, Yan Yangji. Hydrogeochemical features of K-Rich brine and its genetic significance in west Sichuan basin[J]. Journal of Salt Lake Research,1996,(1):1-12.[林耀庭,颜仰基.四川盆地西部富钾卤水水文地球化学特征及其成因意义探讨[J].盐湖研究,1996,(1):1-12.]

[3]LinYaoting,He Jinquan,Wang Tianding,et al. Geochemical characteristics of potassium-rich brinein middle triassic Chengdu salt basin of Sichuan basinand its prospects for brine tapping[J]. Geology of Chemical Minerals, 2002,24(2):72-84.[林耀庭,何金权,王田丁,等.四川盆地中三叠统成都盐盆富钾卤水地球化学特征及其勘查开发前景研究[J].化工矿产地质,2002,24(2):72-84.]

[4]Li Cijun,Yang Lizhong,Zhou Xun, et al. Resource Quantity Evaluation of Deep Brine[M].Beijing:Geology Press, 1992.[李慈君,杨立中,周训,等.深层卤水资源量平价的研究[M].北京:地质出版社, 1992.]

[5]Lin Yaoting, He Jinquan,Ye Maocai. On potash-forming model and ore-hunting direction of lower-middle Triassic series In Sichuan basin[J]. Geology of Chemical Minerals,2003,25 (2):76-82.[林耀庭,何金权,叶茂才.论四川盆地下中三叠统成盐模式及找钾方向[J].化工矿产地质,2003, 25(2):76-82.]

[6]Guan Jianzhe,Dai Kelin,Du Qiliang. Use and genesis of green-bean rocks and its genesis in Emeishan area, Sichuan Province[J]. Journal of Chengdu University of Technology(Science & Technology Edition), 1990,17(2):37-43.[关建哲,戴克琳,杜其良.峨眉绿豆岩的应用及其成因探索[J].成都地质学院学报,1990,17(2):37-43.]

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