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Article: The discovery of the oldest rocks in the Kuluketage area and its geological implications

TitleThe discovery of the oldest rocks in the Kuluketage area and its geological implications
Authors
KeywordsArchean
Crustal growth
Hf isotope
Tarim Craton
Zircon dating
Issue Date2011
PublisherScience China Press, co-published with Springer. The Journal's web site is located at http://www.springerlink.com/content/1674-7313/
Citation
Science China Earth Sciences, 2011, v. 54 n. 3, p. 342-348 How to Cite?
AbstractThe basement rocks in the Kuluketage area are composed predominately of tonalite-trondhjemite-granodiorite rocks, and occured mainly in Xinger and Korla. U-Pb dating of TTG gneiss near Korla yielded a late Neoarchean weighted mean 207Pb/ 206Pb age of 2. 65 Ga, which is the oldest published age for the TTG rocks in the Kuluketage area and thus suggests that Archean terrane in the area was formed in the late Neoarchean. The Korla gneiss is much younger than the TTG rocks in the northern Altyn Tagh, eastern Tarim Craton, indicating that the oldest terrane of the Tarim Craton was exposed probably in the northern Altyn Tagh. Until late Neoarchean, the Tarim continent extends to the Kuluketage area and finally had generated a relatively large uniform Archean basement within the craton. Zircon Hf isotopic analyses of the TTG gneiss give low e{open} Hf(t) values (-5 to 1) with Paleoarchean to Mesoarchean two-stage model ages (T DM 2) between 3. 0 and 3. 3 Ga, suggesting that the basement rocks in the northern Tarim Craton were derived dominately from partial melting of Paleoarchean to Mesoarchean juvenile crustal material. The Hf model ages, therefore, indicate that no continent crust older than 3. 3 Ga existed in the Kuluketage area. © 2011 Science China Press and Springer-Verlag Berlin Heidelberg.
Persistent Identifierhttp://hdl.handle.net/10722/139178
ISSN
2015 Impact Factor: 1.655
2015 SCImago Journal Rankings: 0.626
ISI Accession Number ID
Funding AgencyGrant Number
National Basic Research Program of China2007CB411308
National Natural Science Foundation of China40803009
40772130
CAS/SAFEA
Funding Information:

We thank the two referees for their constructive comments and Dr. Hou Kejun for laboratory assistance. This is a contribution to No. IS-1204 from Guangzhou Institute of Geochemistry, Chinese Academy of Sciences. This study was supported by National Basic Research Program of China (Grant No. 2007CB411308), National Natural Science Foundation of China (Grant Nos. 40803009 and 40772130) and CAS/SAFEA International Partnership Program for Creative Research Teams.

References

 

DC FieldValueLanguage
dc.contributor.authorLong, XPen_HK
dc.contributor.authorYuan, Cen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorXiao, WJen_HK
dc.contributor.authorZhao, GCen_HK
dc.contributor.authorZhou, KFen_HK
dc.contributor.authorWang, YJen_HK
dc.contributor.authorHu, AQen_HK
dc.date.accessioned2011-09-23T05:46:23Z-
dc.date.available2011-09-23T05:46:23Z-
dc.date.issued2011en_HK
dc.identifier.citationScience China Earth Sciences, 2011, v. 54 n. 3, p. 342-348en_HK
dc.identifier.issn1674-7313en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139178-
dc.description.abstractThe basement rocks in the Kuluketage area are composed predominately of tonalite-trondhjemite-granodiorite rocks, and occured mainly in Xinger and Korla. U-Pb dating of TTG gneiss near Korla yielded a late Neoarchean weighted mean 207Pb/ 206Pb age of 2. 65 Ga, which is the oldest published age for the TTG rocks in the Kuluketage area and thus suggests that Archean terrane in the area was formed in the late Neoarchean. The Korla gneiss is much younger than the TTG rocks in the northern Altyn Tagh, eastern Tarim Craton, indicating that the oldest terrane of the Tarim Craton was exposed probably in the northern Altyn Tagh. Until late Neoarchean, the Tarim continent extends to the Kuluketage area and finally had generated a relatively large uniform Archean basement within the craton. Zircon Hf isotopic analyses of the TTG gneiss give low e{open} Hf(t) values (-5 to 1) with Paleoarchean to Mesoarchean two-stage model ages (T DM 2) between 3. 0 and 3. 3 Ga, suggesting that the basement rocks in the northern Tarim Craton were derived dominately from partial melting of Paleoarchean to Mesoarchean juvenile crustal material. The Hf model ages, therefore, indicate that no continent crust older than 3. 3 Ga existed in the Kuluketage area. © 2011 Science China Press and Springer-Verlag Berlin Heidelberg.en_HK
dc.languageengen_US
dc.publisherScience China Press, co-published with Springer. The Journal's web site is located at http://www.springerlink.com/content/1674-7313/en_HK
dc.relation.ispartofScience China Earth Sciencesen_HK
dc.rightsThe original publication is available at www.springerlink.com-
dc.subjectArcheanen_HK
dc.subjectCrustal growthen_HK
dc.subjectHf isotopeen_HK
dc.subjectTarim Cratonen_HK
dc.subjectZircon datingen_HK
dc.titleThe discovery of the oldest rocks in the Kuluketage area and its geological implicationsen_HK
dc.typeArticleen_HK
dc.identifier.emailSun, M:minsun@hku.hken_HK
dc.identifier.emailZhao, GC:gzhao@hkucc.hku.hken_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.identifier.authorityZhao, GC=rp00842en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s11430-010-4156-zen_HK
dc.identifier.scopuseid_2-s2.0-79952346996en_HK
dc.identifier.hkuros193899en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79952346996&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume54en_HK
dc.identifier.issue3en_HK
dc.identifier.spage342en_HK
dc.identifier.epage348en_HK
dc.identifier.isiWOS:000288121700002-
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridLong, XP=14012199100en_HK
dc.identifier.scopusauthoridYuan, C=35241599200en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK
dc.identifier.scopusauthoridXiao, WJ=7202456615en_HK
dc.identifier.scopusauthoridZhao, GC=7403296321en_HK
dc.identifier.scopusauthoridZhou, KF=37054916900en_HK
dc.identifier.scopusauthoridWang, YJ=37055066100en_HK
dc.identifier.scopusauthoridHu, AQ=7202699686en_HK

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