| 库车前陆盆地古近系蒸发岩岩石学、矿物学与成钾环境分析 |
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| 关键词:Kuqa basin petrology mineralogy potassium-forming environment sylvite |
| 基金项目:国家“973”计划项目(编号: 2011CB403007);中央地质勘查基金项目(编号: 200965004);“十二五”国家科技支撑305项目课题(编号: 2011BAB06B06) |
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| Analysis of Petrology, Mineralogy and K-forming Environment of Paleogene Evaporites in Kuqa Foreland Basin: A Case Study of Drill Hole DZK01 |
| There are a lot of salty mineral resources in Paleogene-Neogene strata in Kuqa basin, especially in the central and western part. The Kuqa basin is one of the most favorable areas to find a variety of salty deposits. In recent years, Drill Hole DZK01 has been one of the scientific exploration drill holes in search for the resource of sylvite. The main purpose of this drill hole is to find out whether the Kuqa basin contains sylvite deposits or not. This paper mainly analyzed petrology, mineralogy, and potassium-forming environment of Paleogene evaporates in the basin. Salt rock containing mud conglomerates is the major lithology in Paleogene evaporates. Salt rock containing mud conglomerates is of tectonic origin and also a product of the highly concentrated saline lake. Halite is the major mineral in Paleogene strata in Kuqa basin. There are three major kinds of K-bearing minerals in Drill Hole DZK01, i.e., syngenite, sylvite and carnallite, which indicates that the ancient saline lake had reached the high concentration degree. An analysis of samples shows that the ancient saline lake in Kuqa basin was in a closed and shallow sedimentary environment. There were five large-scale desalination events in the development of the saline lake, and therefore the salts were accumulated well, and Kuqa basin had a good K-forming environment. |
| XING Wan-li,LIU Cheng-lin,WANG An-jian,JIAO Peng-cheng,LI Guo-wu,ZHAO Xian-fu,GAO Chao.2013.Analysis of Petrology, Mineralogy and K-forming Environment of Paleogene Evaporites in Kuqa Foreland Basin: A Case Study of Drill Hole DZK01[J].Acta Geoscientica Sinica,34(5):559-566. |
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