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

基底断裂不发育且构造稳定的区域原油沥青,其稀土模式具有与上地壳沉积岩相的特征。

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.

龙岗地块与北带之间的接触带上，发育了一条晚太古宙-古元古宙时期的动带。