甘肃漳县盐岩沉积环境及其构造意义
首发时间:2014-12-12
摘要:甘肃漳县盐矿位于西秦岭北缘断裂带,深入研究该盐矿形成时期的沉积环境对于揭示西秦岭北缘断裂带新近纪构造演化具有重要意义。通过对钻孔资料以及野外露头资料的分析,认为漳县盐矿形成于新近纪陆相断陷深湖环境。这说明,西秦岭北缘断裂带在盐矿形成时期处于拉张状态,而非逆冲、剪切状态。这一认识对揭示西秦岭北缘断裂带活动过程具有重要意义,可以进一步提升对西秦岭及相邻地区中、新生代地质演化的认识水平,并且可为盐岩及油气资源勘查提供指导。
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The sedimentary environment and tectonic implication of salt in Zhangxian,Gansu Province
Abstract:The salt of Zhangxian located in the Northern margin of West Qinling Fault Zone(WQFZ), the sedimentary environment has important significance to review the Neogene tectonic evolution of the WQFZ.In this paper, we found the salt formed in continental rifted deep lake in Neogene by drilling data and outcrop data. In this period, the WQFZ was in extensional state rather than thrusting or shearing state. The result is important for revealing the active process of WQFZ, enhance the Cenozoic geological evolution level of WQFZ and adjacent areas, further can provide guidance for salt and hydrocarbon exploration.
Keywords: kstructural geology Northern margin of West Qinling Fault Zone Zhangxian salt evaporite
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No.4621915102165514****
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