| 大汶口凹陷下第三系含盐段杂卤石的成因及其找钾意义 |
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| 引用本文： | 赵德钧
,韩蔚田
,蔡克勤
,高建华.大汶口凹陷下第三系含盐段杂卤石的成因及其找钾意义[J].地球科学,1987(4). |
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| 作者姓名： | 赵德钧 韩蔚田 蔡克勤 高建华 |
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| 作者单位： | Wuhan College of Geology，Wuhan 430074 |
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| 摘 要： | 大汶口凹陷成盐时代为早第三纪始新—渐新世。含盐段的中上部有大量薄层状杂卤石岩和含杂卤石的石盐岩等产出。本区的杂卤石有原生沉积和同生交代两种成因类型,是内陆盐湖在持续蒸发浓缩条件下,由周边含钙补给水掺杂而形成的。标志着卤水已接近饱和钾镁盐的程度,具有重要的找钾意义。钾盐层应位于杂卤石分布区内受补给水影响较小的凹陷中心地带。
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| 关 键 词： | 山东省 杂卤石 早第三纪 蒸发作用 |
THE STUDY OF POLYHALITE GENESIS AND ITS SIGNIFICANCE OF POTASH-FINDING IN DAWENKOU DEPRESSION, SHANDONG PROVINCE |
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| Zhao Dejun Han Weitian Cai Keqin Gao Jianhua.THE STUDY OF POLYHALITE GENESIS AND ITS SIGNIFICANCE OF POTASH-FINDING IN DAWENKOU DEPRESSION, SHANDONG PROVINCE[J].Earth Science-Journal of China University of Geosciences,1987(4). |
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| Authors: | Zhao Dejun Han Weitian Cai Keqin Gao Jianhua |
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| Abstract: | The salt deposits, with thin bedded polyhalite and
langbeinite rocks formed in Eogene Period ( Guan Zhuang Group). There are two types of polyhalite, occurring in the upper part of salt section. One of them, the laminar polyhalite rock, is primary sediments. The other one, the contemporaneous polyhalite, is formed by replacing glauberite and gypsum. Under the conditions of strong evaporation, these polyhalites are formed by the calc-bearing water flowing into salt lake. It seems to us that the brine of salt lake abounds with potash. |
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| Keywords: | Shandong province polyhalite Eogene Period evaporation |
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