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Article: Late Quaternary faulting on the Manas and Hutubi reverse faults in the northern foreland basin of Tian Shan, China

TitleLate Quaternary faulting on the Manas and Hutubi reverse faults in the northern foreland basin of Tian Shan, China
Authors
Issue Date2015
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/epsl
Citation
Earth and Planetary Science Letters, 2015, v. 424, p. 212-225 How to Cite?
AbstractThe Tian Shan Range lies in the actively deforming part of the India–Asia collision zone. In the northern foreland basin of Tian Shan, the strata were intensively deformed by Cenozoic folding and faulting. Slip rate studies along these faults are important for understanding the dynamics of crustal deformation and evaluating the seismic hazards in the region. Two reverse faults (the Manas and Hutubi faults) in the northern foreland basin were investigated. Due to past faulting events along these faults, the terrace treads along the Manas River were ruptured, forming fault scarps several meters in height. Loess deposits were trapped and preserved at the surface ruptures along these scarps. The thickness of the trapped loess is dependent on the size of the ruptures. The minimum and maximum ages of these scarps are constrained by dating the loess preserved at the surface ruptures and the terrace treads, respectively, using the quartz optically stimulated luminescence (OSL) dating technique. Our dating results suggest that the loess trapped at the ruptures was deposited from the early to mid-Holocene at the Hutubi Fault, and from the mid- to late-Holocene at the Manas Fault. The vertical displacements of the faults were evaluated by measuring the topographic profiles across the investigated fault scarps using the differential global position system (DGPS). Our results suggest that, during the late Quaternary in the studied region, the vertical slip rates of the Manas Fault were between ∼0.74mm/yr and ∼1.6mm/yr , while the Hutubi Fault had a much lower vertical slip rate between ∼0.34mm/yr and ∼0.40mm/yr . The tectonic implications of our results are discussed.
Persistent Identifierhttp://hdl.handle.net/10722/216831
ISSN
2015 Impact Factor: 4.326
2015 SCImago Journal Rankings: 3.628

 

DC FieldValueLanguage
dc.contributor.authorGong, Z-
dc.contributor.authorLi, SH-
dc.contributor.authorLi, B-
dc.date.accessioned2015-09-18T05:40:40Z-
dc.date.available2015-09-18T05:40:40Z-
dc.date.issued2015-
dc.identifier.citationEarth and Planetary Science Letters, 2015, v. 424, p. 212-225-
dc.identifier.issn0012-821X-
dc.identifier.urihttp://hdl.handle.net/10722/216831-
dc.description.abstractThe Tian Shan Range lies in the actively deforming part of the India–Asia collision zone. In the northern foreland basin of Tian Shan, the strata were intensively deformed by Cenozoic folding and faulting. Slip rate studies along these faults are important for understanding the dynamics of crustal deformation and evaluating the seismic hazards in the region. Two reverse faults (the Manas and Hutubi faults) in the northern foreland basin were investigated. Due to past faulting events along these faults, the terrace treads along the Manas River were ruptured, forming fault scarps several meters in height. Loess deposits were trapped and preserved at the surface ruptures along these scarps. The thickness of the trapped loess is dependent on the size of the ruptures. The minimum and maximum ages of these scarps are constrained by dating the loess preserved at the surface ruptures and the terrace treads, respectively, using the quartz optically stimulated luminescence (OSL) dating technique. Our dating results suggest that the loess trapped at the ruptures was deposited from the early to mid-Holocene at the Hutubi Fault, and from the mid- to late-Holocene at the Manas Fault. The vertical displacements of the faults were evaluated by measuring the topographic profiles across the investigated fault scarps using the differential global position system (DGPS). Our results suggest that, during the late Quaternary in the studied region, the vertical slip rates of the Manas Fault were between ∼0.74mm/yr and ∼1.6mm/yr , while the Hutubi Fault had a much lower vertical slip rate between ∼0.34mm/yr and ∼0.40mm/yr . The tectonic implications of our results are discussed.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/epsl-
dc.relation.ispartofEarth and Planetary Science Letters-
dc.rightsCopyright © 2015 Elsevier B.V.-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleLate Quaternary faulting on the Manas and Hutubi reverse faults in the northern foreland basin of Tian Shan, China-
dc.typeArticle-
dc.identifier.emailLi, SH: shli@hku.hk-
dc.identifier.authorityLi, SH=rp00740-
dc.identifier.authorityLi, B=rp00736-
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.epsl.2015.05.030-
dc.identifier.hkuros250488-
dc.identifier.volume424-
dc.identifier.spage212-
dc.identifier.epage225-
dc.publisher.placeNetherlands-

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