Cretaceous Terrain – Secondary Lands of Tigrinyaland and Semien
This is the twelfth installment of the geological description of Tigrinyaland and Semien, and it explores the cretaceous terrains that make up the secondary lands.
Oolitic Terrain – Secondary Lands of Tigrinyaland and Semien
This is the eleventh installment of the geological description of Tigrinyaland and Semien, and it discusses the oolitic terrains that make up the secondary lands.
Triassic Terrain – Secondary Lands of Tigrinyaland and Semien
This is the tenth installment of the geological description of Tigrinyaland and Semien, and it explores the triassic terrains forming part of the secondary lands.
Diorite, Amphibolite, Etc – Secondary Lands of Tigrinyaland and Semien
This is the ninth installment of the geological description of Tigrinyaland and Semien, and it discusses the secondary lands composed of diorite, amphibolite, and related rocks.
Secondary Lands of Tigrinyaland and Semien: Carbonic Terrain
This is the eighth installment of the geological description of Tigrinyaland and Semien, and it explores the secondary lands made up of combustible terrains.