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Article: Optical dating of dune sands in the northeastern deserts of China

TitleOptical dating of dune sands in the northeastern deserts of China
Authors
KeywordsDesert
Holocene climate change
Optical dating
Quartz
Sand dune
Issue Date2002
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/palaeo
Citation
Palaeogeography, Palaeoclimatology, Palaeoecology, 2002, v. 181 n. 4, p. 419-429 How to Cite?
AbstractOptical dating has been used to obtain the ages of fossil-stabilized sand dunes from four sections in the northeastern deserts of China. Our results indicate that the optically stimulated luminescence ages of the four sections correlate well, even though the samples were collected from different deserts about 600 km apart. Our results also indicate that active dune formation in this region lasted from the Last Glacial Maximum to about 10 ka, and that the warm climate of the Holocene was interrupted by a cold/dry dune formation episode about 3.5-1.7 ka. The Holocene Optimum in this region is between 10 and 3.6 ka, and a later warm/humid dune stabilization phase lasted from at least 1.6 to 1.0 ka. The youngest age on the uppermost sand unit yielded an age of only 40 yr, supporting the previous argument that the existence of modern active eolian sands in the regions with a mean annual precipitation of up to 450 mm is not mainly due to drought, but to extensive land cultivation over historic time. From the luminescence properties of the quartz grains, it is hypothesized that the sands in most of the sections are probably derived from more than one source, with a minor source of quartz having a different thermal history before deposition. © 2002 Elsevier Science B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/72830
ISSN
2015 Impact Factor: 2.525
2015 SCImago Journal Rankings: 1.501
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, SHen_HK
dc.contributor.authorSun, JMen_HK
dc.contributor.authorZhao, Hen_HK
dc.date.accessioned2010-09-06T06:45:30Z-
dc.date.available2010-09-06T06:45:30Z-
dc.date.issued2002en_HK
dc.identifier.citationPalaeogeography, Palaeoclimatology, Palaeoecology, 2002, v. 181 n. 4, p. 419-429en_HK
dc.identifier.issn0031-0182en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72830-
dc.description.abstractOptical dating has been used to obtain the ages of fossil-stabilized sand dunes from four sections in the northeastern deserts of China. Our results indicate that the optically stimulated luminescence ages of the four sections correlate well, even though the samples were collected from different deserts about 600 km apart. Our results also indicate that active dune formation in this region lasted from the Last Glacial Maximum to about 10 ka, and that the warm climate of the Holocene was interrupted by a cold/dry dune formation episode about 3.5-1.7 ka. The Holocene Optimum in this region is between 10 and 3.6 ka, and a later warm/humid dune stabilization phase lasted from at least 1.6 to 1.0 ka. The youngest age on the uppermost sand unit yielded an age of only 40 yr, supporting the previous argument that the existence of modern active eolian sands in the regions with a mean annual precipitation of up to 450 mm is not mainly due to drought, but to extensive land cultivation over historic time. From the luminescence properties of the quartz grains, it is hypothesized that the sands in most of the sections are probably derived from more than one source, with a minor source of quartz having a different thermal history before deposition. © 2002 Elsevier Science B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/palaeoen_HK
dc.relation.ispartofPalaeogeography, Palaeoclimatology, Palaeoecologyen_HK
dc.rightsPalaeogeography, Palaeoclimatology, Palaeoecology. Copyright © Elsevier BV.en_HK
dc.subjectDeserten_HK
dc.subjectHolocene climate changeen_HK
dc.subjectOptical datingen_HK
dc.subjectQuartzen_HK
dc.subjectSand duneen_HK
dc.titleOptical dating of dune sands in the northeastern deserts of Chinaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0031-0182&volume=181&spage=419&epage=429&date=2002&atitle=Optical+dating+of+dune+sands+in+the+northeastern+deserts+of+Chinaen_HK
dc.identifier.emailLi, SH:shli@hku.hken_HK
dc.identifier.authorityLi, SH=rp00740en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0031-0182(01)00443-6en_HK
dc.identifier.scopuseid_2-s2.0-0037172847en_HK
dc.identifier.hkuros70968en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037172847&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume181en_HK
dc.identifier.issue4en_HK
dc.identifier.spage419en_HK
dc.identifier.epage429en_HK
dc.identifier.isiWOS:000176611100003-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLi, SH=24438103700en_HK
dc.identifier.scopusauthoridSun, JM=36706471000en_HK
dc.identifier.scopusauthoridZhao, H=49161332900en_HK

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