摘要
由于受强烈的构造挤压作用,库车坳陷膏盐层厚度横向变化剧烈,但研究表明膏盐层及盐相关构造分布特征仍具有一定的规律性。以库车坳陷中部盐层和盐下构造为研究对象,以盐构造样式为主体,以盐下构造样式为依据,将库车坳陷盐相关构造划分为3类5种构造样式,即盐收缩式(下伏低缓构造、下伏冲起构造、下伏叠瓦构造)、盐伸展式(下伏低缓构造)和盐底辟式(下伏叠瓦构造)。阐述了不同类型的盐相关构造样式的分带分块特征,并分析出控制盐相关构造样式的主要因素是构造挤压作用和差异负载作用,同时还详述了库车坳陷中部盐相关构造的形成机制。
The salt layer thickness of Kuche depression varied dramatically because of the strong tectonic extrusion, and the distribution of salt layer and salt-related structure have some pattern. Based on the style of pre-salt structure, we studied the salt layer and pre-salt structure of middle Kuche depression, and divided the salt-related structures of Kuche depression into three types and five structural styles. We elaborated the block and belt characteristics of different types of salt-related structures, studied the formation mechanism of salt-related structures in middle Kuche depression, and found that the key control factor of the salt-related structures is tectonic extrusion and differential load.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2009年第3期356-361,共6页
Natural Gas Geoscience
关键词
盐相关构造
成因机制
挤压作用
库车坳陷
Salt-related structure
Genetic mechanism
Compaction action
Kuche depression.
