The contact relationship between Silurian and Devonian is parallelunconformity.
泥盆系与志留系之间为平行不整合接触。
2
Angular unconformity belongs to an intraplate folded - orogenic deformation. Parallelunconformity is the record of intraplate epeirogenic deformation.
角度不整合是板内褶皱造山变形,平行不整合是板内造陆变形的重要记录。
3
The other one is between the Upper Ordovician Terekawat Formation and the underlying formations, which presents commonly as a parallelunconformity or an angular unconformity in some regions.