The sediments are detrital and largely of greywacke facies.

沉积岩为碎屑质，大部杂质岩相。

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

格岩组原岩为杂岩，盆地沉积；卡格兹岩组原岩为岛弧火山岩。