The sediments are detrital and largely of greywacke facies.

积岩为碎屑质，大部分属于杂质砂岩相。

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

克岩组原岩为杂砂岩，属盆地积；卡兹岩组原岩为岛岩。