泰安市大汶口盆地岩盐沉积相区探析

Primary Analysis on Rock Salt Sedimentary Facies Area of Dawenkou Basin in Tai'an City

摘要:

东向洼地是位于大汶口凹陷西部的构造洼地，有利的构造条件、古气候古地理条件、周边丰富的物源，形成了盆地内的岩盐矿床。区域构造演化，造成洼地内构造沉积幅度、卤水浓度差异，从而岩盐沉积相也有了一定的演化，主要趋势为沉积中心自沉积中心自东向洼地西北部沿走向SWW向向洼地中西部转移，沉积厚度也随之变化。

Abstract:

Dongxiang depression Is a structural depression located in the west of Dawenkou basin. Favourable structural conditions, ancient climate, geographical conditions, and the surrounding rich source formed rock salt deposit in the basin. Regional tectonic evolution caused sedimentary range and the concentration differences of brine. Thus, rock salt sedimentary facies have a certain evolution. The main tendency is along the direction of SWW from the northwest to the midwest of Dongxiang depression. The sedimentary thickness changes as well.