Fig. 1: Late Middle Pleistocene tephrostratigraphy of the Main Ethiopian Rift.
From: Age of the oldest known Homo sapiens from eastern Africa
a, Map of the MER showing silicic volcanoes and the late Middle Pleistocene sedimentary formations and relevant tephra units. White boxes with blue edges depict former correlatives of the KHS Tuff6,8 b, Synthetic stratigraphic logs of the late Middle Pleistocene formations showing former correlations for the Alyio Tuff6 (green), Konso SVT (pink, also identified in the Chew Bahir sediment core33), new correlations for Konso unit TA-56 (yellow), and source eruptions (stars). LHM, lower Herto Member; UHM, upper Herto Member. c, Tephra ETH18-8 above the KHS Tuff at the KS locality in the Omo-Kibish Formation9.
