The REE patterns for bitumen is similar to those for supracrustal sedimentary rocks in areas with no basement faults but stabilized structural settings.

在基底断裂不发育且构造稳域原油沥青,其稀土模式具有与上地沉积岩相似特征。

To date, komatiites with spinifex textures have not been found in the supracrustal rocks, but rock sequences similar to greenstones metamorphosed up to upper amphibolite facies are often observed.

在龙岗地块与北接触上，发育了一条晚太古宙-古元古宙时期线性活动。