File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Isochron dating of sediments using luminescence of K-feldspar grains

TitleIsochron dating of sediments using luminescence of K-feldspar grains
Authors
KeywordsDeposition
Feldspar
Grain size
Luminescence dating
Sediment analysis
Issue Date2008
PublisherAmerican Geophysical Union.
Citation
Journal Of Geophysical Research F: Earth Surface, 2008, v. 113 n. 2 How to Cite?
AbstractA new method for dating well-bleached sediments is presented, with results for thirteen samples from China. The method uses an isochron constructed from the measurement of natural radiation doses received by potassium-feldspar grains in a range of grain sizes using the infrared stimulated luminescence (IRSL) signal. The age of deposition of the sediment is calculated from this isochron and from the internal dose rate to the grains from 40K and 87Rb in the crystal lattice. This procedure appears to overcome age underestimation due to anomalous fading, a phenomenon that has precluded conventional luminescence dating of K-feldspars and would be applicable to K-feldspars for which the natural dose is beyond the linear dose response region. Also, since the isochron IRSL method is reliant on only the internal dose rate, it overcomes problems related to (1) changes in past dose rate due to postdepositional migration of radionuclides, (2) changes in water content as water-lain sediments dry out, (3) spatial heterogeneity in the gamma dose rate, and (4) uncertainties in the cosmic ray dose rate during the period of sample burial. Copyright 2008 by the American Geophysical Union.
Persistent Identifierhttp://hdl.handle.net/10722/72821
ISSN
2015 Impact Factor: 3.318
2015 SCImago Journal Rankings: 2.310
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Ben_HK
dc.contributor.authorLi, SHen_HK
dc.contributor.authorWintle, AGen_HK
dc.contributor.authorZhao, Hen_HK
dc.date.accessioned2010-09-06T06:45:25Z-
dc.date.available2010-09-06T06:45:25Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal Of Geophysical Research F: Earth Surface, 2008, v. 113 n. 2en_HK
dc.identifier.issn0148-0227en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72821-
dc.description.abstractA new method for dating well-bleached sediments is presented, with results for thirteen samples from China. The method uses an isochron constructed from the measurement of natural radiation doses received by potassium-feldspar grains in a range of grain sizes using the infrared stimulated luminescence (IRSL) signal. The age of deposition of the sediment is calculated from this isochron and from the internal dose rate to the grains from 40K and 87Rb in the crystal lattice. This procedure appears to overcome age underestimation due to anomalous fading, a phenomenon that has precluded conventional luminescence dating of K-feldspars and would be applicable to K-feldspars for which the natural dose is beyond the linear dose response region. Also, since the isochron IRSL method is reliant on only the internal dose rate, it overcomes problems related to (1) changes in past dose rate due to postdepositional migration of radionuclides, (2) changes in water content as water-lain sediments dry out, (3) spatial heterogeneity in the gamma dose rate, and (4) uncertainties in the cosmic ray dose rate during the period of sample burial. Copyright 2008 by the American Geophysical Union.en_HK
dc.languageengen_HK
dc.publisherAmerican Geophysical Union.en_HK
dc.relation.ispartofJournal of Geophysical Research F: Earth Surfaceen_HK
dc.rightsJournal of Geophysical Research. Copyright © American Geophysical Union.en_HK
dc.subjectDeposition-
dc.subjectFeldspar-
dc.subjectGrain size-
dc.subjectLuminescence dating-
dc.subjectSediment analysis-
dc.titleIsochron dating of sediments using luminescence of K-feldspar grainsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0148-0227&volume=113&spage=&epage=&date=2008&atitle=Isochron+Dating+Of+Sediments+Using+Luminescence+Of+K-feldspar+Grainsen_HK
dc.identifier.emailLi, B:boli@hku.hken_HK
dc.identifier.emailLi, SH:shli@hku.hken_HK
dc.identifier.authorityLi, B=rp00736en_HK
dc.identifier.authorityLi, SH=rp00740en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1029/2007JF000900en_HK
dc.identifier.scopuseid_2-s2.0-50849134880en_HK
dc.identifier.hkuros144839en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-50849134880&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume113en_HK
dc.identifier.issue2en_HK
dc.identifier.eissn2169-9011-
dc.identifier.isiWOS:000257311700002-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLi, B=36072316000en_HK
dc.identifier.scopusauthoridLi, SH=24438103700en_HK
dc.identifier.scopusauthoridWintle, AG=7005930050en_HK
dc.identifier.scopusauthoridZhao, H=7404778046en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats