Abstract
Conventional K/Ar age measurements are reported for two volcanic units from the hominid-bearing Hadar Formation. These ages represent revision of previously published ages for the BKT-2 tephra and the Kadada Moumou basalt. BKT-2 is revised from 2.65 to 2.9 Myr BP and the Kadada Moumou basalt is revised from 3.0 to 3.6 Myr BP.
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
Walter, R. C. thesis, Case Western Reserve Univ. (1980).
Steiger, R. H. & Jäger, E. Earth planet. Sci. Lett. 36, 359–362 (1977).
Mankinen, E. A. & Dalrymple, G. B. J. geophys. Res. 84, 615–626 (1979).
Taieb, M., Johanson, D. C., Coppens, Y. & Aronson, J. L. Nature 260, 289–293 (1976).
Aronson, J. L. et al. Nature 267, 323–327 (1977).
Aronson, J. L., Walter, R. C., Taieb, M. & Naeser, L. W. Proc. VIII Pan-African Cong., Nairobi (eds Leakey, R. E. & Ogot, B. A.) (National Museums of Kenya, 1980).
Alexander, E. C., Jr., Mickelson, G. M. & Lanphere, M. A. Short Pap. 4th int. Conf. on Geochronology (ed. Zartman, R. E.) (Open File Rep. 78–701, 1978).
Taieb, M. & Tiercelin, J. J. Bull. Soc. Geol. Fr. 1, 243–253 (1979).
Aronson, J. L. & Taieb, M. in Hominid Sites: Their Paleoenvironmental Settings (eds Rapp, G. & Vondra, C.) (American Association for the Advancement of Science, 1981).
Mankinen, E. A. & Dalrymple, G. B. Earth planet. Sci. Lett. 17, 89–94 (1972).
Seidemann, D. Geochim. cosmochim. Acta, 42, 1721–1734 (1978).
Dalrymple, G. B., Lanphere, M. A. & Clague, D. A. Init. Rep. DSDP 55, 659–676 (1981).
McDougall, I., Polach, H. A. & Stipp, J. J. Geochim. cosmochim. Acta 33, 1485–1520 (1969).
Baksi, A. K. Earth planet. Sci. Lett. 21, 431–438 (1974).
Dalrymple, G. B. Earth planet. Sci. Lett. 6, 47–55 (1969).
Leakey, M. D. et al. Nature 278, 317–323 (1976).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Walter, R., Aronson, J. Revisions of K/Ar ages for the Hadar hominid site, Ethiopia. Nature 296, 122–127 (1982). https://doi.org/10.1038/296122a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/296122a0
This article is cited by
-
Peralkaline magma evolution and the tephra record in the Ethiopian Rift
Contributions to Mineralogy and Petrology (2012)
-
Magnetostratigraphy of the lower member of the hadar formation (Ethiopia): Evidence for a short normal event in the mammoth subchron
Studia Geophysica et Geodætica (1996)
-
French Contribution to the study of Human Origins: The case ofAustralopithecus afarensis
Human Evolution (1992)
-
The environmental background of hominid emergence and the appearance of the genusHomo
Human Evolution (1991)
-
Petrogenesis of a basalt-rhyolite tephra from the west-central Afar, Ethiopia
Contributions to Mineralogy and Petrology (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.
