The sediments are detrital and largely of greywacke facies.

沉积岩为碎屑质，大部分质岩。

Kezlag rock formation whose mother rocks are greywacke is basinal deposit, Karakez rock formation's protolith is island arc volcanics.

拉格岩组原岩为岩，盆地沉积；卡拉格兹岩组原岩为岛弧火山岩。