East Turkana - Area 103- AKB Squares- 0256 (Pleistocene to of Kenya)

Where: Kenya (3.9° N, 36.2° E: paleocoordinates 3.8° N, 36.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: KBS Member (Koobi Fora Formation), Gelasian to Gelasian (2.6 - 0.8 Ma)

• Maximum age= 1.88 Ma (KBS Tuff, K/Ar adn Ar/ Ar dating)

• group of beds-level stratigraphic resolution

Environment/lithology: delta plain; poorly lithified, bioturbated, silty, carbonaceous sandstone

• Deltaic mudflat environment for the silty clays and silts underlying the mudcracked surface. The mudcracks on the upper surface are up to 15 cm in depth and are firm evidence for subaerial exposure. A laterally continuous beach sand transgressed over the deltaic flats, but nowhere formed preserved beach bars or ridges.
• Thin and very extensive sand which overlies mudcracked silty clays. Sediments underlying the mudcracked surface are less uniform and have interbedded silty clays, sandy silts, and occasional lenses of coarse, clean sands. Root casts and carbonate nodules are typical of the silty clay beds.

Size class: macrofossils

Primary reference: A. K. Behrensmeyer. 1975. The Taphonomy and Paleoecology of Plio-Pleistocene Vertebrate Assemblages East of Lake Rudolf, Kenya. Bulletin of the Museum of Comparative Zoology 146(10):473-578 [A. Behrensmeyer/S. Cote/S. Cote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 32122: authorized by Anna Behrensmeyer, entered by Suzanne Cote on 05.06.2003

Creative Commons license: CC BY (attribution)

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