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Article: Origin and tectonic significance of a Mesozoic multi-layer over-thrust system within the Yangtze Block (South China)

TitleOrigin and tectonic significance of a Mesozoic multi-layer over-thrust system within the Yangtze Block (South China)
Authors
KeywordsBalanced geological section
Intracontinental event
Nappe
Thin-and thick-skinned structure
Thrust fault
Yangtze Block of China
Issue Date2003
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/tecto
Citation
Tectonophysics, 2003, v. 361 n. 3-4, p. 239-254 How to Cite?
AbstractIn the Yangtze Block (South China), a well-developed Mesozoic thrust system extends through the Xuefeng and Wuling mountains in the southeast to the Sichuan basin in the northwest. The system comprises both thin- and thick-skinned thrust units separated by a boundary detachment fault, the Dayin fault. To the northwest, the thin-skinned belt is characterized by either chevron anticlines and box synclines to the northwest or chevron synclines to the southeast. The former structural style displays narrow exposures for the cores of anticlines and wider exposures for the cores of synclines. Thrust detachments occur along Silurian (Fs) and Lower Cambrian (Fc) strata and are dominantly associated with the anticlines. To the southeast, this style of deformation passes gradually into one characterized by chevron synclines with associated principal detachment faults along Silurian (Fs), Cambrian (Fc) and Lower Sinian (Fz) strata. There are, however, numerous secondary back thrusts. Therefore, the thin-skinned belt is like the Valley and Ridge Province of the North American Applachian Mountains. The thick-skinned belt structurally overlies the thin-skinned belt and is characterized by a number of klippen including the Xuefeng and Wuling nappes. It is thus comparable to the Blue Ridge Province of Appalachia. The structural pattern of this thrust system in South China can be explained by a model involving detachment faulting along various stratigraphic layers at different stages of its evolution. The system was developed through a northwest stepwise progression of deformation with the earliest delamination along Lower Sinian strata (Fz). Analyses of balanced geological cross-sections yield about 18.1-21% (total 88 km) shortening for the thin-skinned unit and at least this amount of shortening for the thick-skinned unit. The compressional deformation from southeast to northwest during Late Jurassic to Cretaceous time occurred after the westward progressive collision of the Yangtze Block with the North China Block and suggests that the orogenic event was intracontinental in nature. © 2002 Elsevier Science B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151099
ISSN
2015 Impact Factor: 2.65
2015 SCImago Journal Rankings: 1.971
References

 

DC FieldValueLanguage
dc.contributor.authorYan, DPen_HK
dc.contributor.authorZhou, MFen_HK
dc.contributor.authorSong, HLen_HK
dc.contributor.authorWang, XWen_HK
dc.contributor.authorMalpas, Jen_HK
dc.date.accessioned2012-06-26T06:17:04Z-
dc.date.available2012-06-26T06:17:04Z-
dc.date.issued2003en_HK
dc.identifier.citationTectonophysics, 2003, v. 361 n. 3-4, p. 239-254en_HK
dc.identifier.issn0040-1951en_HK
dc.identifier.urihttp://hdl.handle.net/10722/151099-
dc.description.abstractIn the Yangtze Block (South China), a well-developed Mesozoic thrust system extends through the Xuefeng and Wuling mountains in the southeast to the Sichuan basin in the northwest. The system comprises both thin- and thick-skinned thrust units separated by a boundary detachment fault, the Dayin fault. To the northwest, the thin-skinned belt is characterized by either chevron anticlines and box synclines to the northwest or chevron synclines to the southeast. The former structural style displays narrow exposures for the cores of anticlines and wider exposures for the cores of synclines. Thrust detachments occur along Silurian (Fs) and Lower Cambrian (Fc) strata and are dominantly associated with the anticlines. To the southeast, this style of deformation passes gradually into one characterized by chevron synclines with associated principal detachment faults along Silurian (Fs), Cambrian (Fc) and Lower Sinian (Fz) strata. There are, however, numerous secondary back thrusts. Therefore, the thin-skinned belt is like the Valley and Ridge Province of the North American Applachian Mountains. The thick-skinned belt structurally overlies the thin-skinned belt and is characterized by a number of klippen including the Xuefeng and Wuling nappes. It is thus comparable to the Blue Ridge Province of Appalachia. The structural pattern of this thrust system in South China can be explained by a model involving detachment faulting along various stratigraphic layers at different stages of its evolution. The system was developed through a northwest stepwise progression of deformation with the earliest delamination along Lower Sinian strata (Fz). Analyses of balanced geological cross-sections yield about 18.1-21% (total 88 km) shortening for the thin-skinned unit and at least this amount of shortening for the thick-skinned unit. The compressional deformation from southeast to northwest during Late Jurassic to Cretaceous time occurred after the westward progressive collision of the Yangtze Block with the North China Block and suggests that the orogenic event was intracontinental in nature. © 2002 Elsevier Science 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/tectoen_HK
dc.relation.ispartofTectonophysicsen_HK
dc.rightsTectonophysics. Copyright © Elsevier BV.-
dc.subjectBalanced geological sectionen_HK
dc.subjectIntracontinental eventen_HK
dc.subjectNappeen_HK
dc.subjectThin-and thick-skinned structureen_HK
dc.subjectThrust faulten_HK
dc.subjectYangtze Block of Chinaen_HK
dc.titleOrigin and tectonic significance of a Mesozoic multi-layer over-thrust system within the Yangtze Block (South China)en_HK
dc.typeArticleen_HK
dc.identifier.emailZhou, MF: mfzhou@hkucc.hku.hken_HK
dc.identifier.emailMalpas, J: jgmalpas@hku.hken_HK
dc.identifier.authorityZhou, MF=rp00844en_HK
dc.identifier.authorityMalpas, J=rp00059en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S00401951(02)006467en_HK
dc.identifier.scopuseid_2-s2.0-0037461587en_HK
dc.identifier.hkuros82635-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037461587&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume361en_HK
dc.identifier.issue3-4en_HK
dc.identifier.spage239en_HK
dc.identifier.epage254en_HK
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridYan, DP=36683417500en_HK
dc.identifier.scopusauthoridZhou, MF=7403506005en_HK
dc.identifier.scopusauthoridSong, HL=47261333700en_HK
dc.identifier.scopusauthoridWang, XW=49161417000en_HK
dc.identifier.scopusauthoridMalpas, J=7006136845en_HK
dc.customcontrol.immutablesml 130308-

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