鄂尔多斯盆地延安地区马家沟组马五4亚段含盐系特征及探讨

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英文篇名：Characteristics and Significance of Member 54 Salt-bearing of Majiagou Formation in Yanan Region of Ordos Basin 作者：李晓雄 英文作者：LI Xiao-xiong;Shaanxi Branch of China National Geological Exploration Center of Building Materials Industrry; 关键词：陕北奥陶纪盐盆 ; 延川永坪石盐矿 ; 马家沟组 ; 马五4含盐系 ; 钾盐 英文关键词：the northern Shaanxi Ordovician salt basin;;rock salt of Yongping area Yanchuan county;;Majiagou formation;;member 54 salt-bearing of Majiagou formation;;potassium salt 中文刊名：LGFK 英文刊名：China Non-Metallic Minerals Industry 机构：中国建筑材料工业地质勘查中心陕西总队; 出版日期：2018-11-15 出版单位：中国非金属矿工业导刊 年：2018 期：No.132 基金：陕西省延川县永坪地区石盐矿普查(项目编号:61201506275) 语种：中文; 页：LGFK2018S1018 页数：3 CN：S1 ISSN：11-3924/TD 分类号：43-45

摘要

陕北奥陶纪盐盆南部延川永坪一带石盐矿普查,施工的探采结合井(延1、延2井)在延安地区首次揭露了奥陶系马家沟组马五4含盐系,厚度分别为55.21m和58.35m,其中石盐矿层累计厚度均为49.41m,为目前陕北奥陶纪盐盆发现的最厚马五4含盐系石盐矿层。该发现证实陕北奥陶纪盐盆可能存在多个成盐沉积中心,同时也为陕北盐盆钾盐找矿提供了新的思路和方向。
        The two combined exploration and production wells of Yan 1 and Yan 2 which located in Yongping area Yanchuan county in the south side of the Northern Shaanxi Ordovician salt basin, reveal the thickness of member 54 salt-bearing series of Majiagou formation for the first time which is 55.21 m and 58.35 m respectively. The accumulative thickness of salt layers are 49.41 m,which is the thickest member 54 salt-bearing salt layer found in the northern Shaanxi Ordovician salt basin. The findings suggest that there may exist several salt deposition centers in the northern Shaanxi salt basin, and it also provides a new way of thinking for the potassium salt.

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