论盐类保存条件研究对四川盆地三叠系找钾工作的重要性  

Significance of Salts Preservation Condition Research on Finding Potassium of the Triassic in Sichuan Basin

作　　者：林耀庭[1] 许祖霖[1] 

机构地区：[1]西南石油局第二地质大队,四川成都644811

出　　处：《盐湖研究》2009年第1期6-12,共7页Journal of Salt Lake Research

摘　　要：四川盆地三叠系T1j4、T1j5成盐期卤水浓缩程度较高,已达钾盐沉积阶段,然而人们至今并未找到固相可溶性钾矿层。究其原因,乃盆地T1j4、T1j5盐类形成以来经历了沉积成岩—古剥蚀淋滤—深埋封闭—再次剥蚀淋滤等4个地质及水文地质发展阶段,可能导致固相盐类乃至钾矿层的溶滤破坏,因此加强对盐类成盐期极其以后地质历史发展阶段保存条件的研究极其重要,应予重视。Brine concentration degree was high at salt formation stage of T1j^4, T1j^5 of the triassic in Sichuan Basin, and it had reached the stage of the deposition of potassium salt, however, potash ore layers have never been found. T1j^4 and T1j^5 salts underwent four stages： deposition and formation, denudation and leaching, deep buried, and secondary denudation and leaching, that probablely resulted in the destruction of solid phase salts and potash ore layers. Therefore, it is very important for us to research the salts formation period and preservation condition.

关 键 词：古卤水浓缩程度 盐类保存条件 沉积成岩 古剥蚀淋滤 深埋封闭 再次剥蚀淋滤 三叠系 四川盆地 

分 类 号：P619.211[天文地球—矿床学]