In terms of lithology,fossil records and sedimentary facies,the Cretaceous in the Bazhou depression,Minhe basin is subdivided into Datonghe,Hekou and Minhe Formation.

• 民和盆地巴州拗陷的白垩系按其岩性、化石特征和沉积相自下而上分为大通河组、河口组和民和组。