The Jurassic dolomite is widely distributed in the Qiangtang Basin.It can be divided into dolomicrite, residual-grain dolomite and crystal grain dolomite three rock types.

• 羌塘盆地侏罗系白云岩分布广泛 ,其岩石类型可分为泥晶 -微晶白云岩、残余颗粒白云岩和晶粒白云岩 ,前两者常与石膏相邻或伴生 ,后者与石膏无关。