Arid
DOI10.1127/zfg/2016/0234
Late Quaternary fluvio-aeolian interaction: palaeoenvironment and palaeoclimatic conditions in the pediment zone of Vatrak River basin, western India
Raj, Rachna1; Chamyal, L. S.1; Juyal, Navin2; Phartiyal, Binita3; Ali, S. Nawaz3; Thakur, Biswajeet3
通讯作者Raj, Rachna
来源期刊ZEITSCHRIFT FUR GEOMORPHOLOGIE
ISSN0372-8854
出版年2016
卷号60期号:2页码:151-169
英文摘要

The pediment zone of the Vatrak River basin, in the north-western part of Gujarat, falls within the semi-arid southern margin of the Thar Desert. The area is covered by extensive and partially vegetated dune tops of mostly inactive aeolian landforms of diverse size and morphology. The article is focused on the understanding of terminal Pleistocene environment of the area and its possible linkage to the regional environmental changes. Detailed litho-stratigraphic studies combined with palaeoclimatic proxies like textural analysis, mineral magnetic analysis, loss on ignition data and optical chronology has improved the understanding of depositional environments prevailing in the area. The top 12 m of the exposed sediment succession depicts three major fluvial, fluvio-aeolian and aeolian facies formed by minor channelized streams, fluvio-aeolian interaction processes and aeolian dune and sand sheet deposits respectively. Proxies for palaeoclimatic interpretations aided with optically stimulated luminescence (OSL) chronology from the sedimentary record indicates that between similar to 55-41 ka aggradation was governed by ephemeral fluvial processes under generally semiarid conditions, followed by fluvio-aeolian processes covering an interval from similar to 41 ka-26 ka and dominant aeolian activity took place after similar to 26 ka. These facts indicate that in the area after similar to 41 ka, fluvial conditions dwindled and wind activity enhanced, resulting in the deposition of fluvio-aeolian sediments. A regional comparison of the data has improved our understanding about the shifts in the parameters responsible for dune formation and early Holocene incision due to a regional tectonic uplift in the area.


英文关键词Late Pleistocene palaeoclimate palaeoenvironment western India
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000377725300004
WOS关键词GRAIN-SIZE DISTRIBUTION ; CHINESE LOESS PLATEAU ; ROCK MAGNETIC RECORD ; THAR DESERT ; LATE PLEISTOCENE ; LUMINESCENCE CHRONOLOGY ; ENVIRONMENTAL-CHANGES ; SOUTHERN MARGIN ; SINGLE-ALIQUOT ; ALLUVIAL PLAIN
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/196881
作者单位1.Maharaja Sayajirao Univ Baroda, Fac Sci, Dept Geol, Vadodara 390002, Gujarat, India;
2.Phys Res Lab, Ahmadabad 380009, Gujarat, India;
3.Birbal Sahni Inst Paleobot, 53 Univ Rd, Lucknow 226007, Uttar Pradesh, India
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Raj, Rachna,Chamyal, L. S.,Juyal, Navin,et al. Late Quaternary fluvio-aeolian interaction: palaeoenvironment and palaeoclimatic conditions in the pediment zone of Vatrak River basin, western India[J],2016,60(2):151-169.
APA Raj, Rachna,Chamyal, L. S.,Juyal, Navin,Phartiyal, Binita,Ali, S. Nawaz,&Thakur, Biswajeet.(2016).Late Quaternary fluvio-aeolian interaction: palaeoenvironment and palaeoclimatic conditions in the pediment zone of Vatrak River basin, western India.ZEITSCHRIFT FUR GEOMORPHOLOGIE,60(2),151-169.
MLA Raj, Rachna,et al."Late Quaternary fluvio-aeolian interaction: palaeoenvironment and palaeoclimatic conditions in the pediment zone of Vatrak River basin, western India".ZEITSCHRIFT FUR GEOMORPHOLOGIE 60.2(2016):151-169.
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