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Article: Bainang Terrane, Yarlung-Tsangpo suture, southern Tibet (Xizang, China): A record of intra-Neotethyan subduction-accretion processes preserved on the roof of the world

TitleBainang Terrane, Yarlung-Tsangpo suture, southern Tibet (Xizang, China): A record of intra-Neotethyan subduction-accretion processes preserved on the roof of the world
Authors
KeywordsAccretion
Accretionary wedges
Indus-Yarlung-Zangbo suture zone
Mesozoic
Radiolarians
Subduction
Tibet
Issue Date2004
PublisherGeological Society Publishing House. The Journal's web site is located at http://www.geolsoc.org.uk/gsl/publications/journals/jgs
Citation
Journal Of The Geological Society, 2004, v. 161 n. 3, p. 523-538 How to Cite?
AbstractThe Bainang terrane, an intra-oceanic island are subduction complex into which Tethyan oceanic rocks were accreted during the Cretaceous, is preserved within the Yarlung-Tsangpo suture zone of Tibet. The lithostratigraphic succession established from field mapping records a long history of sedimentation in different portions of the central Tethyan domain from Late Triassic to mid-Cretaceous time. These rocks are preserved within a south-verging imbricate thrust stack of thin (≪ 1 km thick) northward younging tectonic slices. Five lithotectonic units were mapped in the terrane and these units are assigned to two distinct tracts. The northern tract, which accumulated on the north side of Neotethys, was probably separated from its southern counterpart by a mid-ocean ridge. Detailed radiolarian biostratigraphy is used to constrain the timing of depositional events within each tract. Oceanic plate stratigraphy of the northern tract records its northward travel and mid-Cretaceous (late Aptian) approach towards a south-facing intra-oceanic subduction zone. Rocks in the southern tract developed closer to the Indian subcontinent and experienced thermotectonic subsidence and Mid-Jurassic basic alkaline intraplate magmatism. They were probably accreted late in the Cretaceous. Variations in structural style across the terrane indicate deformation at different depths and vertical growth of the wedge rather than lateral accretion. The overall tectonostratigraphy of the terrane reflects its development in a remote intra-oceanic setting.
Persistent Identifierhttp://hdl.handle.net/10722/44697
ISSN
2015 Impact Factor: 2.473
2015 SCImago Journal Rankings: 1.449
References

 

DC FieldValueLanguage
dc.contributor.authorZiabrev, SVen_HK
dc.contributor.authorAitchison, JCen_HK
dc.contributor.authorAbrajevitch, AVen_HK
dc.contributor.authorBadengzhuen_HK
dc.contributor.authorDavis, AMen_HK
dc.contributor.authorLuo, Hen_HK
dc.date.accessioned2007-10-30T06:08:02Z-
dc.date.available2007-10-30T06:08:02Z-
dc.date.issued2004en_HK
dc.identifier.citationJournal Of The Geological Society, 2004, v. 161 n. 3, p. 523-538en_HK
dc.identifier.issn0016-7649en_HK
dc.identifier.urihttp://hdl.handle.net/10722/44697-
dc.description.abstractThe Bainang terrane, an intra-oceanic island are subduction complex into which Tethyan oceanic rocks were accreted during the Cretaceous, is preserved within the Yarlung-Tsangpo suture zone of Tibet. The lithostratigraphic succession established from field mapping records a long history of sedimentation in different portions of the central Tethyan domain from Late Triassic to mid-Cretaceous time. These rocks are preserved within a south-verging imbricate thrust stack of thin (≪ 1 km thick) northward younging tectonic slices. Five lithotectonic units were mapped in the terrane and these units are assigned to two distinct tracts. The northern tract, which accumulated on the north side of Neotethys, was probably separated from its southern counterpart by a mid-ocean ridge. Detailed radiolarian biostratigraphy is used to constrain the timing of depositional events within each tract. Oceanic plate stratigraphy of the northern tract records its northward travel and mid-Cretaceous (late Aptian) approach towards a south-facing intra-oceanic subduction zone. Rocks in the southern tract developed closer to the Indian subcontinent and experienced thermotectonic subsidence and Mid-Jurassic basic alkaline intraplate magmatism. They were probably accreted late in the Cretaceous. Variations in structural style across the terrane indicate deformation at different depths and vertical growth of the wedge rather than lateral accretion. The overall tectonostratigraphy of the terrane reflects its development in a remote intra-oceanic setting.en_HK
dc.format.extent10922624 bytes-
dc.format.extent2487 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherGeological Society Publishing House. The Journal's web site is located at http://www.geolsoc.org.uk/gsl/publications/journals/jgsen_HK
dc.relation.ispartofJournal of the Geological Societyen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsJournal of Geological Society. Copyright © Geological Society Publishing House.en_HK
dc.subjectAccretionen_HK
dc.subjectAccretionary wedgesen_HK
dc.subjectIndus-Yarlung-Zangbo suture zoneen_HK
dc.subjectMesozoicen_HK
dc.subjectRadiolariansen_HK
dc.subjectSubductionen_HK
dc.subjectTibeten_HK
dc.titleBainang Terrane, Yarlung-Tsangpo suture, southern Tibet (Xizang, China): A record of intra-Neotethyan subduction-accretion processes preserved on the roof of the worlden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0016-7649&volume=161&issue=3&spage=523&epage=539&date=2004&atitle=Bainang+Terrane,+Yarlung-Tsangpo+suture,+southern+Tibet+(Xizang,+China):+a+record+of+intra-Neotethyan+subduction-accretion+processes+preserved+on+the+roof+of+the+worlden_HK
dc.identifier.emailAitchison, JC: jona@hku.hken_HK
dc.identifier.authorityAitchison, JC=rp00658en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1144/0016-764903-099en_HK
dc.identifier.scopuseid_2-s2.0-2142773191en_HK
dc.identifier.hkuros92965-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-2142773191&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume161en_HK
dc.identifier.issue3en_HK
dc.identifier.spage523en_HK
dc.identifier.epage538en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridZiabrev, SV=6505777958en_HK
dc.identifier.scopusauthoridAitchison, JC=7102533858en_HK
dc.identifier.scopusauthoridAbrajevitch, AV=6505932976en_HK
dc.identifier.scopusauthoridBadengzhu=52163084000en_HK
dc.identifier.scopusauthoridDavis, AM=7404295484en_HK
dc.identifier.scopusauthoridLuo, H=36982673700en_HK

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