Penecontemporaneous or seepage-reflux dolomitization is the original mechanism for gypsum-bearing muddy dolomicrite.

准同生石化或卤水回流渗石化是泥晶-微晶岩（含膏岩）的形成机制。

Nonsandstone reservoirs between salt beds of Qianjiang Formation in the Qianjiang Sag of the Jianghan Basin are mainly composed of dolomicrite,glauberite rock,mudstone and their peperite.

组成汉盆地陷组盐间段非砂岩储层的岩石主要为泥晶岩、钙芒硝岩、泥岩及其混积岩,孔渗性普遍较差。