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DOI10.1016/j.quascirev.2010.08.003
A similar to 200 ka record of climatic change and dune activity in the Thar Desert, India
Singhvi, A. K.2; Williams, M. A. J.1; Rajaguru, S. N.3; Misra, V. N.3; Chawla, S.2; Stokes, S.4; Chauhan, N.2; Francis, T.2; Ganjoo, R. K.5; Humphreys, G. S.6
通讯作者Williams, M. A. J.
来源期刊QUATERNARY SCIENCE REVIEWS
ISSN0277-3791
出版年2010
卷号29期号:23-24页码:3095-3105
英文摘要

An 18 4 m excavated dune section in the Thar Desert of India with a chronology based on 12 TL ages and a basal age of similar to 190 ka has preserved 12 cycles of dune accretion soil formation calcrete development and subsequent erosion together with the presence of stone artefacts ranging in age from Lower Palaeolithic to Mesolithic coeval with more humid climatic interludes Phases of soil development and carbonate precipitation were relatively wet and phases of dune accretion relatively dry so that there were 12 significant moist intervals separated by 11 drier intervals during the past similar to 190 ka The calculated time interval between successive phases of dune sand accumulation ranged from 22 2 ka to 15 8 ka with a mean of 19 0 ka These values are consistent with a precessional influence on dune activity and on the associated onset of early monsoonal activity in this region Carbon isotopes measured on organic matter within the sand profiles show consistent values close to -21 6 +/- 1 parts per thousand, pointing to deposition during a transitional climatic regime characterized by a change from open C3 grassland to C4 woodland or forest. (C) 2010 Elsevier Ltd All rights reserved


类型Article
语种英语
国家Australia ; India ; England
收录类别SCI-E
WOS记录号WOS:000283699000011
WOS关键词LATE PLEISTOCENE ; MONSOONAL CLIMATE ; WESTERN INDIA ; SEQUENCES ; RAJASTHAN ; RESPONSES ; EASTERN ; PLAINS ; SAHARA ; MARGIN
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
来源机构University of Oxford
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/166191
作者单位1.Univ Adelaide, Adelaide, SA 5005, Australia;
2.Phys Res Lab, Ahmadabad 380009, Gujarat, India;
3.Deccan Coll, Pune, Maharashtra, India;
4.Univ Oxford, Dept Geog, Oxford, England;
5.Univ Jammu, Dept Geol, Jammu 180004, India;
6.Macquarie Univ, Sydney, NSW 2109, Australia
推荐引用方式
GB/T 7714
Singhvi, A. K.,Williams, M. A. J.,Rajaguru, S. N.,et al. A similar to 200 ka record of climatic change and dune activity in the Thar Desert, India[J]. University of Oxford,2010,29(23-24):3095-3105.
APA Singhvi, A. K..,Williams, M. A. J..,Rajaguru, S. N..,Misra, V. N..,Chawla, S..,...&Humphreys, G. S..(2010).A similar to 200 ka record of climatic change and dune activity in the Thar Desert, India.QUATERNARY SCIENCE REVIEWS,29(23-24),3095-3105.
MLA Singhvi, A. K.,et al."A similar to 200 ka record of climatic change and dune activity in the Thar Desert, India".QUATERNARY SCIENCE REVIEWS 29.23-24(2010):3095-3105.
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