The Ce/Ce* and Ceanom indexes indicate that the palaeoenvironment of the Early Cretaceous mudstone in the Suibin Depression was a reduction environment and is profitable for the oil and gas formation.

• Ce/Ce*和Ceanom指数显示绥滨坳陷早白垩世各组泥岩的古环境均为还原环境,对油气生成十分有利。