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Article: Cretaceous long-distance lithospheric extension and surface response in South China

TitleCretaceous long-distance lithospheric extension and surface response in South China
Authors
KeywordsCretaceous
Crustal and mantle processes
Lithospheric extension
South China
Surface response
Issue Date1-Aug-2023
PublisherElsevier
Citation
Earth-Science Reviews, 2023, v. 243 How to Cite?
Abstract

Lithospheric extension plays a pivotal role in governing the evolution of continents and the birth of oceanic basins on Earth. Despite this, quantifying wide-mode lithospheric extension and its effects on surface uplift remain elusive. The vast (> 800-km-wide) Cretaceous extensional system in South China offers a unique opportunity to study the processes and mechanism(s) of wide-mode extension and their impacts. Here we review the essential constraints from crustal and mantle structures determined from geological, seismic reflection/refraction, and other geophysical data. Our compilation reveals a stratified lithosphere with depth-dependent extension in a magma-poor domain, expressed by normal faulting in the upper crust, ductile stretching in the mid-lower crust, and localized Moho uplift associated with mantle shear zones. From the magma-poor domain to the magma-rich domain, lateral variations in the extensional mode involve increased crustal melting, decreased crust-mantle decoupling, and mantle shear-zone abandonment caused by magmatic underplating. Extension-related strain fields across the South China lithosphere are uniformly NW-SE oriented, indicating vertically coherent deformation. Stress transmission across this coherent system likely occurred via basal traction and localized mantle shearing. Lower-crustal stretching and lithospheric removal accompanied and promoted the tectonic exhumation of extensional domes and mountain ranges. We propose a coupling between slab rollback, mantle flow, and lithospheric extension. Rollback-induced mantle flow likely drove lithospheric extension in South China by imposing shear forces at the lithosphere base.


Persistent Identifierhttp://hdl.handle.net/10722/331766
ISSN
2023 Impact Factor: 10.8
2023 SCImago Journal Rankings: 3.654
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, JH-
dc.contributor.authorDong, SW-
dc.contributor.authorCawood, PA-
dc.contributor.authorThybo, H-
dc.contributor.authorClift, PD-
dc.contributor.authorJohnston, ST-
dc.contributor.authorZhao, GC-
dc.contributor.authorZhang, YQ-
dc.date.accessioned2023-09-21T06:58:44Z-
dc.date.available2023-09-21T06:58:44Z-
dc.date.issued2023-08-01-
dc.identifier.citationEarth-Science Reviews, 2023, v. 243-
dc.identifier.issn0012-8252-
dc.identifier.urihttp://hdl.handle.net/10722/331766-
dc.description.abstract<p>Lithospheric extension plays a pivotal role in governing the evolution of continents and the birth of oceanic basins on Earth. Despite this, quantifying wide-mode lithospheric extension and its effects on surface uplift remain elusive. The vast (> 800-km-wide) Cretaceous extensional system in South China offers a unique opportunity to study the processes and mechanism(s) of wide-mode extension and their impacts. Here we review the essential constraints from crustal and mantle structures determined from geological, seismic reflection/refraction, and other geophysical data. Our compilation reveals a stratified lithosphere with depth-dependent extension in a magma-poor domain, expressed by normal faulting in the <a href="https://www.sciencedirect.com/topics/earth-and-planetary-sciences/upper-crust" title="Learn more about upper crust from ScienceDirect's AI-generated Topic Pages">upper crust</a>, ductile stretching in the mid-lower crust, and localized Moho uplift associated with mantle shear zones. From the magma-poor domain to the magma-rich domain, lateral variations in the extensional mode involve increased crustal melting, decreased crust-mantle decoupling, and mantle shear-zone abandonment caused by magmatic underplating. Extension-related strain fields across the South China lithosphere are uniformly NW-SE oriented, indicating vertically coherent deformation. Stress transmission across this coherent system likely occurred via basal traction and localized mantle shearing. Lower-crustal stretching and lithospheric removal accompanied and promoted the tectonic exhumation of extensional domes and mountain ranges. We propose a coupling between slab rollback, mantle flow, and lithospheric extension. Rollback-induced mantle flow likely drove lithospheric extension in South China by imposing shear forces at the lithosphere base.</p>-
dc.languageeng-
dc.publisherElsevier-
dc.relation.ispartofEarth-Science Reviews-
dc.subjectCretaceous-
dc.subjectCrustal and mantle processes-
dc.subjectLithospheric extension-
dc.subjectSouth China-
dc.subjectSurface response-
dc.titleCretaceous long-distance lithospheric extension and surface response in South China-
dc.typeArticle-
dc.identifier.doi10.1016/j.earscirev.2023.104496-
dc.identifier.scopuseid_2-s2.0-85164678502-
dc.identifier.volume243-
dc.identifier.eissn1872-6828-
dc.identifier.isiWOS:001043826300001-
dc.identifier.issnl0012-8252-

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