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Article: Sr-Nd isotopic compositions of the Changjiang sediments: implications for tracing sediment sources

TitleSr-Nd isotopic compositions of the Changjiang sediments: implications for tracing sediment sources
Authors
KeywordsChangjiang River
Provenance
Sediment
Source rock
Sr-Nd isotopes
Issue Date2007
Publisher中國科學院. The Journal's web site is located at http://jdxg.chinajournal.net.cn/
Citation
Science In China, Series D: Earth Sciences, 2007, v. 50 n. 10, p. 1556-1565 How to Cite?
AbstractThe suspended particulate and fine-grained floodplain sediments were collected from the main stream and tributaries of the Changjiang River for Sr-Nd isotopic measurements. The εNd(0) values gradually decrease downstream from ̄10.8 on average in the upper reaches to -12.3 in the lower reaches, whereas the 87Sr/ 86Sr ratios increase correspondingly, averaging 0.721899 and 0.725826 respectively in the upper and middle-lower reaches. The compositional variations primarily reflect the complex controls of provenance rocks, chemical weathering, and sediment characters between different catchments, among which the abnormal Sr-Nd isotopic compositions of the Yalong, Fujiang, Tuojiang and Yuanjiang rivers indicate the sediment provenance contributions from the Emeishan Basalt in the upper reaches and the old metamorphic and siliceous rocks in the middle-lower reaches. The Sr-Nd isotopic ratios of the Changjiang sediments can better reflect the average composition of weathered continental crust compared to other major rivers in the world because of the unique source rock types in the Changjiang drainage basin. The recognition of the Sr-Nd isotopic systematics of the Changjiang sediments will contribute to our understanding of the Changjiang evolution history and continental weathering processes during the Cenozoic, and also to reconstructing the paleoenvironmental changes in East China and the marginal seas. © Science in China Press 2007.
Persistent Identifierhttp://hdl.handle.net/10722/151220
ISSN
2011 Impact Factor: 1.588
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYang, Sen_HK
dc.contributor.authorJiang, Sen_HK
dc.contributor.authorLing, Hen_HK
dc.contributor.authorXia, Xen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorWang, Den_HK
dc.date.accessioned2012-06-26T06:18:52Z-
dc.date.available2012-06-26T06:18:52Z-
dc.date.issued2007en_HK
dc.identifier.citationScience In China, Series D: Earth Sciences, 2007, v. 50 n. 10, p. 1556-1565en_HK
dc.identifier.issn1006-9313en_HK
dc.identifier.urihttp://hdl.handle.net/10722/151220-
dc.description.abstractThe suspended particulate and fine-grained floodplain sediments were collected from the main stream and tributaries of the Changjiang River for Sr-Nd isotopic measurements. The εNd(0) values gradually decrease downstream from ̄10.8 on average in the upper reaches to -12.3 in the lower reaches, whereas the 87Sr/ 86Sr ratios increase correspondingly, averaging 0.721899 and 0.725826 respectively in the upper and middle-lower reaches. The compositional variations primarily reflect the complex controls of provenance rocks, chemical weathering, and sediment characters between different catchments, among which the abnormal Sr-Nd isotopic compositions of the Yalong, Fujiang, Tuojiang and Yuanjiang rivers indicate the sediment provenance contributions from the Emeishan Basalt in the upper reaches and the old metamorphic and siliceous rocks in the middle-lower reaches. The Sr-Nd isotopic ratios of the Changjiang sediments can better reflect the average composition of weathered continental crust compared to other major rivers in the world because of the unique source rock types in the Changjiang drainage basin. The recognition of the Sr-Nd isotopic systematics of the Changjiang sediments will contribute to our understanding of the Changjiang evolution history and continental weathering processes during the Cenozoic, and also to reconstructing the paleoenvironmental changes in East China and the marginal seas. © Science in China Press 2007.en_HK
dc.languageengen_US
dc.publisher中國科學院. The Journal's web site is located at http://jdxg.chinajournal.net.cn/en_HK
dc.relation.ispartofScience in China, Series D: Earth Sciencesen_HK
dc.subjectChangjiang Riveren_HK
dc.subjectProvenanceen_HK
dc.subjectSedimenten_HK
dc.subjectSource rocken_HK
dc.subjectSr-Nd isotopesen_HK
dc.titleSr-Nd isotopic compositions of the Changjiang sediments: implications for tracing sediment sourcesen_HK
dc.typeArticleen_HK
dc.identifier.emailYang, S: syyang@mail.tongji.edu.cnen_HK
dc.identifier.emailXia, XP: xpxia@hotmail.comen_HK
dc.identifier.emailSun, M: minsun@hku.hk-
dc.identifier.authorityXia, XP=rp00815en_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1007/s11430-007-0052-6en_HK
dc.identifier.scopuseid_2-s2.0-34548789656en_HK
dc.identifier.hkuros153384-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34548789656&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume50en_HK
dc.identifier.issue10en_HK
dc.identifier.spage1556en_HK
dc.identifier.epage1565en_HK
dc.identifier.isiWOS:000250583000014-
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridYang, SY=7406950130en_HK
dc.identifier.scopusauthoridJiang, SY=7404452380en_HK
dc.identifier.scopusauthoridLing, HF=7202062675en_HK
dc.identifier.scopusauthoridXia, XP=35241486400en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK
dc.identifier.scopusauthoridWang, DJ=21744426500en_HK

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