Abstract
The early hominids of East Africa were dated by determining the ages of tuff beds at the sites. Despite much research using palaeomagnetic and K/Ar-dating techniques, some of those ages are still controversial1,2. To obtain independent age estimates for these tephra layers, we have examined cores from DSDP Sites 231 and 232 in the Gulf of Aden (Fig. 1a) which consist mainly of calcareous nannofossil ooze, but also contain rare tephra horizons3 dated by interpolation from the established nannofossil stratigraphy (Fig. 1b). Chemical analysis confirms that the identity and sequence of these horizons is the same as that at the East African sites. We conclude that the age of the Tulu Bor Tuff is <3.4 Myr and hence that the Hadar hominid specimens are also <∼3.4 Myr old.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Brown, F. H. Nature 300, 631–633 (1982).
Aronson, J. L., Walter, R. C. & Taieb, M. Nature 306, 209–210 (1983).
Bunce, E. T. & Fisher, R. L. Init. Rep. DSDP 24 3–16 (1974).
Roth, P. H. Init. Rep. DSDP 24, 969–994 (1974).
Bukry, D. Init. Rep. DSDP 15, 685–703 (1973).
Backman, J. & Shackleton, N. J. Mar. Micropaleontol. 8, 141–170 (1983).
Gartner, S., Chen, M. P. & Stanton, R. J. Mar. Micropaleontol. 8, 17–50 (1983).
Sarna-Wojcicki, A. M. et al. U.S. Geol. Surv. Prof. Pap. 1293 (1984).
Borchardt, G. A., Amscavage, P. J. & Millard, H. T. Jr., J. Sedimentary Petrol. 42-2, 301–306 (1972).
Cerling, T. E. & Brown, F. H. Nature 299, 216–221 (1982).
McDougall, I. Bull. geol. Soc. Am. (in the press).
Brown, F. H. Nature 306, 210 (1983).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Sarna-Wojcicki, A., Meyer, C., Roth, P. et al. Ages of tuff beds at East African early hominid sites and sediments in the Gulf of Aden. Nature 313, 306–308 (1985). https://doi.org/10.1038/313306a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/313306a0
This article is cited by
-
Peralkaline magma evolution and the tephra record in the Ethiopian Rift
Contributions to Mineralogy and Petrology (2012)
-
Rift on the record
Nature (1993)
-
French Contribution to the study of Human Origins: The case ofAustralopithecus afarensis
Human Evolution (1992)
-
Plio-Pleistocene volcanism and sedimentary facies changes at Gadeb prehistoric site, Ethiopia
Geologische Rundschau (1988)
-
An odontometric assessment of variability inAustralopithecus afarensis
Human Evolution (1987)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.