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Article: Absence of Archean basement in the South Kunlun Block: Nd-Sr-O isotopic evidence from granitoids

TitleAbsence of Archean basement in the South Kunlun Block: Nd-Sr-O isotopic evidence from granitoids
Authors
KeywordsGranitoids
Nd-Sr-O isotopes
Tibetan Plateau
West Kunlun
Issue Date2003
PublisherBlackwell Publishing Asia. The Journal's web site is located at http://www.blackwellpublishing.com/journals/IAR
Citation
Island Arc, 2003, v. 12 n. 1, p. 13-21 How to Cite?
AbstractThe West Kunlun mountain range along the northwestern margin of the Tibetan Plateau is crucial in understanding the early tectonic history of the region. It can be divided into the North and South Kunlun Blocks, of which the former is considered to be part of the Tarim Craton, whereas consensus was not reached on the nature and origin of the South Kunlun Block. Samples were collected from the 471 Ma Yirba Pluton, the 405 Ma North Kudi Pluton and the 214 Ma Arkarz Shan Intrusive Complex. These granitoids cover approximately 60% of the Kudi area in the South Kunlun Block. Sr, Nd, and O isotope compositions preclude significant involvement of mantle-derived magma in the genesis of these granitoids; therefore, they can be used to decipher the nature of lower-mid crust in the area. All samples give Mesoproterozoic Nd model ages (1.1-1.5 Ga) similar to those of the exposed metamorphic complex of this block but significantly different from those of the basement of the North Kunlun Block (2.8 Ga). This indicates that the South Kunlun Block does not have an Archean basement, and, thus, does not support the microcontinent model that suggests the South Kunlun Block was a microcontinent once separated from and later collided back with the North Kunlun Block.
Persistent Identifierhttp://hdl.handle.net/10722/72622
ISSN
2015 Impact Factor: 1.397
2015 SCImago Journal Rankings: 0.823
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYuan, Cen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorZhou, MFen_HK
dc.contributor.authorZhou, Hen_HK
dc.contributor.authorXiao, Wen_HK
dc.contributor.authorLi, Jen_HK
dc.date.accessioned2010-09-06T06:43:33Z-
dc.date.available2010-09-06T06:43:33Z-
dc.date.issued2003en_HK
dc.identifier.citationIsland Arc, 2003, v. 12 n. 1, p. 13-21en_HK
dc.identifier.issn1038-4871en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72622-
dc.description.abstractThe West Kunlun mountain range along the northwestern margin of the Tibetan Plateau is crucial in understanding the early tectonic history of the region. It can be divided into the North and South Kunlun Blocks, of which the former is considered to be part of the Tarim Craton, whereas consensus was not reached on the nature and origin of the South Kunlun Block. Samples were collected from the 471 Ma Yirba Pluton, the 405 Ma North Kudi Pluton and the 214 Ma Arkarz Shan Intrusive Complex. These granitoids cover approximately 60% of the Kudi area in the South Kunlun Block. Sr, Nd, and O isotope compositions preclude significant involvement of mantle-derived magma in the genesis of these granitoids; therefore, they can be used to decipher the nature of lower-mid crust in the area. All samples give Mesoproterozoic Nd model ages (1.1-1.5 Ga) similar to those of the exposed metamorphic complex of this block but significantly different from those of the basement of the North Kunlun Block (2.8 Ga). This indicates that the South Kunlun Block does not have an Archean basement, and, thus, does not support the microcontinent model that suggests the South Kunlun Block was a microcontinent once separated from and later collided back with the North Kunlun Block.en_HK
dc.languageengen_HK
dc.publisherBlackwell Publishing Asia. The Journal's web site is located at http://www.blackwellpublishing.com/journals/IARen_HK
dc.relation.ispartofIsland Arcen_HK
dc.subjectGranitoidsen_HK
dc.subjectNd-Sr-O isotopesen_HK
dc.subjectTibetan Plateauen_HK
dc.subjectWest Kunlunen_HK
dc.titleAbsence of Archean basement in the South Kunlun Block: Nd-Sr-O isotopic evidence from granitoidsen_HK
dc.typeArticleen_HK
dc.identifier.emailSun, M:minsun@hku.hken_HK
dc.identifier.emailZhou, MF:mfzhou@hkucc.hku.hken_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.identifier.authorityZhou, MF=rp00844en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1046/j.1440-1738.2003.00376.xen_HK
dc.identifier.scopuseid_2-s2.0-0037339061en_HK
dc.identifier.hkuros81680en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037339061&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume12en_HK
dc.identifier.issue1en_HK
dc.identifier.spage13en_HK
dc.identifier.epage21en_HK
dc.identifier.isiWOS:000180356700002-
dc.publisher.placeAustraliaen_HK
dc.identifier.scopusauthoridYuan, C=35241599200en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK
dc.identifier.scopusauthoridZhou, MF=7403506005en_HK
dc.identifier.scopusauthoridZhou, H=7404741996en_HK
dc.identifier.scopusauthoridXiao, W=7202456615en_HK
dc.identifier.scopusauthoridLi, J=26643194200en_HK

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