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.
This is the 2nd part of the geological description of Tigrinyaland and Semien published by the French explorers Messrs. Ferret and Galinier in 1847. It presents the primary terrains of Tigrinyaland and Semien composed of granite, gneiss and related rocks as discovered by the two explorers.
This is an introduction to the geological description of Tigrinyaland and Samen by Messrs. Ferret and Galinier published in 1847.