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This is the seventh installment of the geological description of Tigrinyaland and Semien, and it discusses the transitional or intermediate lands of Tigrinyaland and Semien composed of syenite rocks.
This is the sixth installment of the geological description of Tigrinyaland and Semien, and it continues presenting the transitional or intermediate lands of Tigrinyaland and Semien made up of phyllites and related rocks.
This is the fifth installment of the geological description of Tigrinyaland and Semien, and it discusses the transitional or intermediate lands of Tigrinyaland and Semien composed of phyllites and related rocks.
This is the fourth installment of the geological description of Tigrinyaland and Semien, and it presents the intermediate or transitional terrains of Tigrinyaland and Semien formed of phyllitic terrains and intermediate talcschist rocks.
This is the 3rd installment of the geological description of Tigrinyaland and Semien, which has been adapted from the work published by the French explorers Messrs. Ferret and Galinier in 1847. It discusses the primary terrains of Tigrinyaland and Semien composed of micaschist, protogine, and talcschist rocks.