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Article: Loess sedimentation in Tibet: provenance, processes, and link with Quaternary glaciations

TitleLoess sedimentation in Tibet: provenance, processes, and link with Quaternary glaciations
Authors
Issue Date2007
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/quascirev
Citation
Quaternary Science Reviews, 2007, v. 26 n. 17-18, p. 2265-2280 How to Cite?
AbstractWell-preserved loess deposits are found on the foothills of mountains along the middle reaches of the Yarlung Zangbo River in southern Tibet. Optically stimulated luminescence (OSL) dating is used to determine loess ages by applying the single-aliquot regeneration technique. Geochemical, mineralogical, and granulometric measurements were carried out to allow a comparison between loess from Tibet and the Chinese Loess Plateau. Our results demonstrate that (i) the loess deposits have a basal age of 13-11 ka, suggesting they accumulated after the last deglaciation, (ii) loess in southern Tibet has a "glacial" origin, resulting from eolian sorting of glaciofluvial outwash deposits from braided river channels or alluvial fans by local near-surface winds, and (iii) the present loess in the interior of Tibet has accumulated since the last deglaciation when increased monsoonal circulation provided an increased vegetation cover that was sufficient for trapping eolian silt. The lack of full-glacial loess is either due to minimal vegetation cover or possibly due to the erosion of loess as glaciofluvial outwash during the beginning of each interglacial. Such processes would have been repeated during each glacial-interglacial cycle of the Quaternary. © 2007 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151224
ISSN
2015 Impact Factor: 4.521
2015 SCImago Journal Rankings: 2.928
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSun, Jen_US
dc.contributor.authorLi, SHen_US
dc.contributor.authorMuhs, DRen_US
dc.contributor.authorLi, Ben_US
dc.date.accessioned2012-06-26T06:18:56Z-
dc.date.available2012-06-26T06:18:56Z-
dc.date.issued2007en_US
dc.identifier.citationQuaternary Science Reviews, 2007, v. 26 n. 17-18, p. 2265-2280en_US
dc.identifier.issn0277-3791en_US
dc.identifier.urihttp://hdl.handle.net/10722/151224-
dc.description.abstractWell-preserved loess deposits are found on the foothills of mountains along the middle reaches of the Yarlung Zangbo River in southern Tibet. Optically stimulated luminescence (OSL) dating is used to determine loess ages by applying the single-aliquot regeneration technique. Geochemical, mineralogical, and granulometric measurements were carried out to allow a comparison between loess from Tibet and the Chinese Loess Plateau. Our results demonstrate that (i) the loess deposits have a basal age of 13-11 ka, suggesting they accumulated after the last deglaciation, (ii) loess in southern Tibet has a "glacial" origin, resulting from eolian sorting of glaciofluvial outwash deposits from braided river channels or alluvial fans by local near-surface winds, and (iii) the present loess in the interior of Tibet has accumulated since the last deglaciation when increased monsoonal circulation provided an increased vegetation cover that was sufficient for trapping eolian silt. The lack of full-glacial loess is either due to minimal vegetation cover or possibly due to the erosion of loess as glaciofluvial outwash during the beginning of each interglacial. Such processes would have been repeated during each glacial-interglacial cycle of the Quaternary. © 2007 Elsevier Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/quascireven_US
dc.relation.ispartofQuaternary Science Reviewsen_US
dc.titleLoess sedimentation in Tibet: provenance, processes, and link with Quaternary glaciationsen_US
dc.typeArticleen_US
dc.identifier.emailLi, SH:shli@hku.hken_US
dc.identifier.emailLi, B:boli@hku.hken_US
dc.identifier.authorityLi, SH=rp00740en_US
dc.identifier.authorityLi, B=rp00736en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.quascirev.2007.05.003en_US
dc.identifier.scopuseid_2-s2.0-35548991549en_US
dc.identifier.hkuros139826-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-35548991549&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume26en_US
dc.identifier.issue17-18en_US
dc.identifier.spage2265en_US
dc.identifier.epage2280en_US
dc.identifier.isiWOS:000251378800015-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridSun, J=7410367600en_US
dc.identifier.scopusauthoridLi, SH=24438103700en_US
dc.identifier.scopusauthoridMuhs, DR=7003979845en_US
dc.identifier.scopusauthoridLi, B=36072316000en_US

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