期刊
JOURNAL OF HUMAN EVOLUTION
卷 56, 期 1, 页码 11-24出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jhevol.2008.09.003
关键词
Carbon isotopes; Hominin evolution; Indonesia; Paleoecology; Paleosols; Sunda
资金
- L.S.B. Leakey Foundation
- Center for Global and Regional Environmental Research
- Central Investment Fund for Research Enhancement
- Office of the Vice-President for Research
- Office of the Dean of the College of Liberal Arts and Sciences
- Iowa Center for Research by Undergraduates
- University of Iowa Foundation
A sequence of paleosols in the Solo Basin, Central Java, Indonesia, documents the local and regional environments present when Homo erectus spread through Southeast Asia during the early Pleistocene. The earliest human immigrants encountered a low-relief lake-margin landscape dominated by moist grasslands with open woodlands in the driest landscape positions. By 1.5 Ma, large streams filled the lake and the landscape became more riverine in nature, with riparian forests, savanna, and open woodland. Paleosol morphology and carbon isotope values of soil organic matter and pedogenic carbonates indicate a long-term shift toward regional drying or increased duration of the annual dry season through the early Pleistocene. This suggests that an annual dry season associated with monsoon conditions was an important aspect of the paleoclimate in which early humans spread from Africa to Southeast Asia. (C) 2008 Elsevier Ltd. All rights reserved.
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