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Article: Neotethys and the India-Asia collision: Insights from a palaeomagnetic study of the Dazhuqu ophiolite, southern Tibet

TitleNeotethys and the India-Asia collision: Insights from a palaeomagnetic study of the Dazhuqu ophiolite, southern Tibet
Authors
KeywordsOphiolites
Palaeomagnetism
Tethys
Tibet
Yarlung Tsangpo suture
Issue Date2005
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/epsl
Citation
Earth And Planetary Science Letters, 2005, v. 233 n. 1-2, p. 87-102 How to Cite?
AbstractSince 1999, independently derived geophysical and geological models have been published arguing for an intra-oceanic subduction system along essentially the entire width of the India-Eurasia collision belt. This idea conflicts with earlier proposals, where in the eastern part of the convergence zone Neotethyan mid-ocean ridge-generated lithosphere directly north of the Indian craton was consumed beneath Eurasia in Tibet in an Andean-type plate configuration. New palaeomagnetic data are reported from three Barremian-Aptian (∼ 120 Ma) sequences of chert, siliceous mudstones and volcaniclastic rocks. These rocks form the uppermost part of the Dazhuqu supra-subduction zone ophiolite terrane, which crop out along substantial portions of the India-Eurasia (= Yarlung Tsangpo) suture zone in southern Tibet. The declination data provide little regionally-useful tectonic information; they are dominated by local rotations, presumably related to the Dazhuqu terrane's initial obduction onto the India plate in the Palaeocene and subsequent movement(s) as India later collided and indented into Eurasia. The inclination data are, however, useful because they yield consistent sub-equatorial formation sites (2.7 °S ± 3.0°, 7.9 °N ± 2.7°, 1.4 °N ± 5.7°), which correspond with the location of the Neotethyan intra-oceanic subduction system inferred from the seismic tomographic data. At the time these Dazhuqu terrane rocks formed, the intra-Tethyan subduction zone would have been about 2500 km south of Eurasia. © 2005 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151148
ISSN
2015 Impact Factor: 4.326
2015 SCImago Journal Rankings: 3.628
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorAbrajevitch, AVen_HK
dc.contributor.authorAli, JRen_HK
dc.contributor.authorAitchison, JCen_HK
dc.contributor.authorBadengzhuen_HK
dc.contributor.authorDavis, AMen_HK
dc.contributor.authorLiu, Jen_HK
dc.contributor.authorZiabrev, SVen_HK
dc.date.accessioned2012-06-26T06:17:41Z-
dc.date.available2012-06-26T06:17:41Z-
dc.date.issued2005en_HK
dc.identifier.citationEarth And Planetary Science Letters, 2005, v. 233 n. 1-2, p. 87-102en_HK
dc.identifier.issn0012-821Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/151148-
dc.description.abstractSince 1999, independently derived geophysical and geological models have been published arguing for an intra-oceanic subduction system along essentially the entire width of the India-Eurasia collision belt. This idea conflicts with earlier proposals, where in the eastern part of the convergence zone Neotethyan mid-ocean ridge-generated lithosphere directly north of the Indian craton was consumed beneath Eurasia in Tibet in an Andean-type plate configuration. New palaeomagnetic data are reported from three Barremian-Aptian (∼ 120 Ma) sequences of chert, siliceous mudstones and volcaniclastic rocks. These rocks form the uppermost part of the Dazhuqu supra-subduction zone ophiolite terrane, which crop out along substantial portions of the India-Eurasia (= Yarlung Tsangpo) suture zone in southern Tibet. The declination data provide little regionally-useful tectonic information; they are dominated by local rotations, presumably related to the Dazhuqu terrane's initial obduction onto the India plate in the Palaeocene and subsequent movement(s) as India later collided and indented into Eurasia. The inclination data are, however, useful because they yield consistent sub-equatorial formation sites (2.7 °S ± 3.0°, 7.9 °N ± 2.7°, 1.4 °N ± 5.7°), which correspond with the location of the Neotethyan intra-oceanic subduction system inferred from the seismic tomographic data. At the time these Dazhuqu terrane rocks formed, the intra-Tethyan subduction zone would have been about 2500 km south of Eurasia. © 2005 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/epslen_HK
dc.relation.ispartofEarth and Planetary Science Lettersen_HK
dc.rightsEarth and Planetary Science Letters. Copyright © Elsevier BV.-
dc.subjectOphiolitesen_HK
dc.subjectPalaeomagnetismen_HK
dc.subjectTethysen_HK
dc.subjectTibeten_HK
dc.subjectYarlung Tsangpo sutureen_HK
dc.titleNeotethys and the India-Asia collision: Insights from a palaeomagnetic study of the Dazhuqu ophiolite, southern Tibeten_HK
dc.typeArticleen_HK
dc.identifier.emailAli, JR: jrali@hku.hken_HK
dc.identifier.emailAitchison, JC: jona@hku.hken_HK
dc.identifier.authorityAli, JR=rp00659en_HK
dc.identifier.authorityAitchison, JC=rp00658en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.epsl.2005.02.003en_HK
dc.identifier.scopuseid_2-s2.0-17044374565en_HK
dc.identifier.hkuros107220-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-17044374565&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume233en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage87en_HK
dc.identifier.epage102en_HK
dc.identifier.isiWOS:000228828600008-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridAbrajevitch, AV=6505932976en_HK
dc.identifier.scopusauthoridAli, JR=7102266465en_HK
dc.identifier.scopusauthoridAitchison, JC=7102533858en_HK
dc.identifier.scopusauthoridBadengzhu=52163084000en_HK
dc.identifier.scopusauthoridDavis, AM=7404295484en_HK
dc.identifier.scopusauthoridLiu, J=8376679800en_HK
dc.identifier.scopusauthoridZiabrev, SV=6505777958en_HK

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