It was divided top of Pleistocene series(Q eol 3),medium of Pleistocene series(Q eol 2),underpart of Pleistocene series(Q eol 1).

• 将区内黄土划分为上更新统黄土 (Qeol3 )、中更新统黄土 (Qeol2 )、下更新统黄土 (Qeol1)。