Chalangla area in Qiangtang basin in northern Tibet lies in the south slope of the Tanggula Mountains, and the southern depression of Qiangtang basin. Its exposure strata are Mesozoic and Cenozoic, in which there is no Palaeozoic.

• 羌塘盆地查郎拉地区位于唐古拉山南坡 ,大地构造位置处在羌塘盆地羌南坳陷 ,出露地层为中生界及新生界 ,缺失古生界地层。