Publications [#240096] of Steven E. Churchill

Papers Published

1. Dirks, PHGM; Kibii, JM; Kuhn, BF; Steininger, C; Churchill, SE; Kramers, JD; Pickering, R; Farber, DL; Mériaux, A-S; Herries, AIR; King, GCP; Berger, LR, Geological setting and age of Australopithecus sediba from southern Africa., Science (New York, N.Y.), vol. 328 no. 5975 (April, 2010), pp. 205-208, ISSN 0036-8075 [doi]
   (last updated on 2024/04/23)

   Abstract:
   We describe the geological, geochronological, geomorphological, and faunal context of the Malapa site and the fossils of Australopithecus sediba. The hominins occur with a macrofauna assemblage that existed in Africa between 2.36 and 1.50 million years ago (Ma). The fossils are encased in water-laid, clastic sediments that were deposited along the lower parts of what is now a deeply eroded cave system, immediately above a flowstone layer with a U-Pb date of 2.026 +/- 0.021 Ma. The flowstone has a reversed paleomagnetic signature and the overlying hominin-bearing sediments are of normal polarity, indicating deposition during the 1.95- to 1.78-Ma Olduvai Subchron. The two hominin specimens were buried together in a single debris flow that lithified soon after deposition in a phreatic environment inaccessible to scavengers.