Published online by Cambridge University Press: 01 May 2009
Previous to 1931 the Kakamega area, in the Central Kavirondo Reserve of Western Kenya, was almost unknown from a geological standpoint. Gregory (1, 1921) had made brief references to it, but no detailed geological or petrographical examinations had been made of any part. Following on the discovery there in 1931 of alluvial and reef gold, and subsequently the entry of mining companies into the field, a great deal of geological research has been carried out. During 1934–5 the author, whilst mapping a 35 square miles concession (originally owned by the Eldoret Mining Syndicate—E.M.S.—and subsequently examined by East Africa Concessions, Ltd.), was enabled to make a detailed field examination of a part of the area, and later to examine a series of thin slices of the rocks concerned. The account now given is based on facts accumulated during these investigations.