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Article: Basement heterogeneity in the Cathaysia crustal block, southeast China

TitleBasement heterogeneity in the Cathaysia crustal block, southeast China
Authors
Issue Date2004
PublisherGeological Society Publishing House. The Journal's web site is located at http://www.geolsoc.org.uk/sp
Citation
Geological Society Special Publication, 2004, v. 226, p. 145-155 How to Cite?
AbstractIsotope signatures and T DM model ages in Hong Kong and neighbouring Guangdong Province have indicated that the basement of the Cathaysia Block is probably an amalgamation of narrow crustal slices, ranging in age from latest Archaean to Mesoproterozoic. Inheritance ages from zircons contained within Mesozoic volcanic and plutonic rocks also show Proterozoic and Archaean components. Regional gravity survey studies display NNE- to NE-trending Bouguer anomalies that are indicative of sharp changes in rock densities at middle and lower crustal levels. The anomalies displayed on the gravity profile from Guangdong to Hong Kong have been modelled as narrow slices of Archaean and Proterozoic crust. A substantial E-W-trending Bouguer anomaly, which largely parallels the trend of the foliation in the Proterozoic schists of the region, is present to the east of Guangzhou. It is proposed that the basement of the Cathaysia Block consists of an amalgamation of NE- to NNE-trending Palaeo- to Mesoproterozoic and Archaean crustal terranes, which in places have retained the pre-amalgamation E-W-trending tectonic fabric. The discontinuities between the basement terranes, and the E-W structures have strongly influenced the geological evolution of the Phanerozoic sequences and igneous complexes in southeast China. These are most obviously manifest in the regional NE-trending fault and shear zones that displace the cover sequences. © The Geological Society of London 2004.
Persistent Identifierhttp://hdl.handle.net/10722/151267
ISSN
2015 SCImago Journal Rankings: 0.747
References

 

DC FieldValueLanguage
dc.contributor.authorFletcher, CJNen_US
dc.contributor.authorChan, LSen_US
dc.contributor.authorSewell, RJen_US
dc.contributor.authorCampbell, SDGen_US
dc.contributor.authorDavis, DWen_US
dc.contributor.authorZhu, Jen_US
dc.date.accessioned2012-06-26T06:19:42Z-
dc.date.available2012-06-26T06:19:42Z-
dc.date.issued2004en_US
dc.identifier.citationGeological Society Special Publication, 2004, v. 226, p. 145-155en_US
dc.identifier.issn0305-8719en_US
dc.identifier.urihttp://hdl.handle.net/10722/151267-
dc.description.abstractIsotope signatures and T DM model ages in Hong Kong and neighbouring Guangdong Province have indicated that the basement of the Cathaysia Block is probably an amalgamation of narrow crustal slices, ranging in age from latest Archaean to Mesoproterozoic. Inheritance ages from zircons contained within Mesozoic volcanic and plutonic rocks also show Proterozoic and Archaean components. Regional gravity survey studies display NNE- to NE-trending Bouguer anomalies that are indicative of sharp changes in rock densities at middle and lower crustal levels. The anomalies displayed on the gravity profile from Guangdong to Hong Kong have been modelled as narrow slices of Archaean and Proterozoic crust. A substantial E-W-trending Bouguer anomaly, which largely parallels the trend of the foliation in the Proterozoic schists of the region, is present to the east of Guangzhou. It is proposed that the basement of the Cathaysia Block consists of an amalgamation of NE- to NNE-trending Palaeo- to Mesoproterozoic and Archaean crustal terranes, which in places have retained the pre-amalgamation E-W-trending tectonic fabric. The discontinuities between the basement terranes, and the E-W structures have strongly influenced the geological evolution of the Phanerozoic sequences and igneous complexes in southeast China. These are most obviously manifest in the regional NE-trending fault and shear zones that displace the cover sequences. © The Geological Society of London 2004.en_US
dc.languageengen_US
dc.publisherGeological Society Publishing House. The Journal's web site is located at http://www.geolsoc.org.uk/spen_US
dc.relation.ispartofGeological Society Special Publicationen_US
dc.titleBasement heterogeneity in the Cathaysia crustal block, southeast Chinaen_US
dc.typeArticleen_US
dc.identifier.emailChan, LS:chanls@hku.hken_US
dc.identifier.authorityChan, LS=rp00665en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1144/GSL.SP.2004.226.01.08en_US
dc.identifier.scopuseid_2-s2.0-5544286725en_US
dc.identifier.hkuros102815-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-5544286725&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume226en_US
dc.identifier.spage145en_US
dc.identifier.epage155en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridFletcher, CJN=7402671886en_US
dc.identifier.scopusauthoridChan, LS=7403540528en_US
dc.identifier.scopusauthoridSewell, RJ=7102795591en_US
dc.identifier.scopusauthoridCampbell, SDG=7403000726en_US
dc.identifier.scopusauthoridDavis, DW=7404611342en_US
dc.identifier.scopusauthoridZhu, J=35621346800en_US

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