New paleomagnetic data from the hominin bearing Dmanisi paleo-anthropologic site (southern Georgia, Caucasus)

被引：16

作者：

Calvo-Rathert, M. ^{[1
]}

Goguitchaichvili, A. ^{[2
]}

Sologashvili, D. ^{[3
]}

Villalain, J. J. ^{[1
]}

Bogalo, M. F. ^{[1
]}

Carrancho, A. ^{[1
]}

Maissuradze, G. ^{[4
]}

机构：

[1] Univ Burgos, Escuela Politecn Super, Dpto Fis, Burgos 09006, Spain

[2] Univ Nacl Autonoma Mexico, Inst Geofis Sede Michoacan, Lab Interinstituc Magnetismo Natl, Morelia, Michoacan, Mexico

[3] Ivane Javakhishvili State Univ Tbilisi, Dept Geophys, Tbilisi, Georgia

[4] Georgian Acad Sci, Inst Geol, GE-380093 Tbilisi, Georgia

来源：

QUATERNARY RESEARCH | 2008年 / 69卷 / 01期

关键词：

paleomagnetism; Pliocene; Pleistocene; Dmanisi; human evolution; Caucasus;

D O I：

10.1016/j.yqres.2007.09.001

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

The Dmanisi site has yielded human remains and lithic industry associated with Late Pliocene-early Pleistocene fauna. The site is composed of volcanogenic sediments overlying basaltic lava flows. The lithostratigraphic sequence comprises two basic depositional units: Unit A, overlying the basalt flows, and Unit ER on top. A paleomagnetic and rock-magnetic study has been carried out on 106 specimens from Units A and B and the uppermost basalt flow. The lava and Unit A provide normal polarities, while reversed polarities. and anomalous directions are observed in Unit B, the latter probably due to overlapping of a secondary and a primary reversed polarity component. The lower part of the section shows a clear correlation with the Olduvai subchron, and the upper levels could be as young as 1.07 Ma. As human remains were found both in units with normal and reversed polarity, different non-contemporaneous human occupations might have been possible. (C) 2007 University of Washington. All rights reserved.

引用

页码：91 / 96

页数：6

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