| 王丽丽,郭进京,胡晓隆,向光娅,惠浪波,王利晓.西秦岭北缘漳县盐矿含盐地层沉积特征与盐矿成因[J].地质找矿论丛,2016,31(3):384-389 |
| 西秦岭北缘漳县盐矿含盐地层沉积特征与盐矿成因 |
| Sedimentary characteristics of salt-bearing strata and genesis of Zhangxian salt deposit in the northern margin of west Qinling |
| 投稿时间：2015-08-24 |
| DOI：10.6053/j.issn.1001-1412.2016.03.010 |
| 中文关键词: 漳县盐矿 含盐地层 沉积韵律 内陆湖泊型 高山深盆成盐环境 西秦岭北缘 |
| 英文关键词:Zhangxian salt deposit salt-bearing strata, sedimentary rhythm inland lake north margin of the west Qinling |
| 基金项目:国家自然科学基金项目（编号：41340002，41072149）资助。 |
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| 中文摘要: |
| 甘肃省漳县盐矿赋存于西秦岭北缘断裂带漳县段新近纪含盐红层沉积盆地。漳县盐矿层赋存于漳县含盐红层盆地上部巨厚的灰色-灰红色泥岩-泥灰岩岩系中。通过分析含盐岩系沉积旋回序列和沉积特征，结合含盐盆地的区域地质构造背景，认为漳县岩盐矿床沉积环境具有内陆湖泊型的盐湖相特征。由灰红-灰绿色泥岩、灰色泥质灰岩、灰黑色泥灰岩及芒硝-石膏-岩盐层构成的灰色含盐岩系，沉积韵律旋回极为发育，具有大旋回套小旋回的特征，厚度达750 m，说明漳县盐矿的形成不仅与干旱-湿润气候的周期性旋回变化有关，还需有较大深度的湖盆和较大范围汇水区域的盐类物质补给。由此推断漳县岩盐矿床是内陆湖泊型盐矿，具有高山深盆成盐的特征。 |
| 英文摘要: |
| Zhangxian salt deposit in Gansu province occurs within Neogene salt-bearing red bed sedimentary basin in the Zhangxian segment of Northern Margin Fault Zone of west Qinling. The salt layer is located in the very thick grey-grey red mudstone-marl limestone series at upper part of the basin. Analysis of the sedimentary cycle sequence and sedimentary feature and regional geological tectonic background shows that the sedimentary environment of Zhangxian salt deposit is characteristic of the salt lake facies of inland lake. The grey salt-bearing rock series of grey red-grey green mudstone, grey black marl limestone and miralilite-gypsum-rock layer is 750 m thick developed with well rhythmic sedimentary cycle and small cycle is set in big cycle suggesting that formation of the salt deposit needs not only dry-wet cyclic change but also a relative deep and large catchment area to supply the salt materials thus the salt deposit is characterized by inland lake by high mountainous deep lake. |
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