Stratigraphical Relationships of the Plio-Pleistocene Deposits, East Rudolf, Kenya

Late Cenozoic sedimentation in the Allia Bay area, East Rudolf (Turkana) Basin, Kenya

“…Rock units established by Bowen and Vondra (1973) were mapped on aerial photographs at a scale of 1:24,000. Twelve critical outcrops were measured, described and sampled in order to determine the lithologie and stratigraphie relationships of the various units exposed.…”

“…The flood plain of Laga Bura Hasuma separates the Allia Bay area from the Koobi Fora area to the north, and further north, the Koobi Fora area is separated from the lleret area by volcanics of the Kokoi horst and a large Holocene alluvial plain east of the Kokoi (Bowen and Vondra, 1973).…”

“…The total PlioPleistocene sequence consists of 325 m fluvial, deltaic transitional lacustrine and lacustrine sediments in contact with Miocene and Pliocene volcanics (Bowen and Vondra, 1973). The sediment outcrops occur in a band, 7 to 40 km wide and 80 km long, along the lakeshore from 03°39' to 04°19' N latitude.…”

“…Percentages of heavy minerals 43 Table 3 (Patterson, 1966;Patterson e^ , 1970;Howell, T968 ;Arambourg et al, 1969;Butzer e^ aj_. , 1969;Butzer, 1971;Vondra e^ aJL, , 1971;Bowen and Vondra, 1973;Vondra and Bowen, 1976;Maglio, 1970Maglio, , 1972Leakey et al, I97O;Leakey, 1971Leakey, , 1972Leakey, , 1973and Isaac et ajy, 1971). Late Cenozoic sediments, Miocene through Holocene, are well exposed throughout the basin.…”

“…In 1970 a survey to determine the regional geology was undertaken by a team from Iowa State University headed by C. F. Vondr? (Vondra e^ , 1971;Bowen and Vondra, 1973; GEOLOGIC SETTING Lake Rudolf lies în the Baringo-Suguta graben in part of the Turkana depression where its margins become Increasingly strongly faulted until it merges into the main rift to the east (Fig. 3) (Baker e^ aj_., 1972).…”