Subduction-Induced Back-Arc Extension Versus Far-Field Stretching: Contrasting Modes for Continental Marginal Break-Up

Publication type:
Journal article
Metadata:
Autoren
  • Shuting Yang
  • Zhong-Hai Li
  • Bo Wan
  • Ling Chen
  • Boris JP Kaus
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000636360200035&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1029/2020GC009416
eISSN
1525-2027
Externe Identifier
  • Clarivate Analytics Document Solution ID: RH6XZ
Ausgabe der Veröffentlichung
3
Zeitschrift
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
Artikelnummer
ARTN e2020GC009416
Datum der Veröffentlichung
2021
Status
Published
Titel
Subduction-Induced Back-Arc Extension Versus Far-Field Stretching: Contrasting Modes for Continental Marginal Break-Up
Sub types
  • Article
Ausgabe der Zeitschrift
22

Data source: Web of Science (Lite)

Other metadata sources:
Abstract
<jats:title>Abstract</jats:title><jats:p>Continental break‐up is an ingredient of plate tectonics and the Wilson cycle. During the evolution of the Tethyan Realm since the Paleozoic, a series of ribbon‐like (micro‐)continents are split from the Gondwana and drifted northwards to the Eurasian continent. The initial opening of the Neo‐Tethys Ocean follows a typical continental marginal break‐up of Cimmeria from Gondwana, which is generally considered to be driven by subduction of the Paleo‐Tethyan plate. Yet, the competition between back‐arc extension and far‐field stretching is matter of a long‐standing debate. Therefore, the authors here present the results of systematic 2‐D numerical simulations. The results reveal four types of subduction‐induced continental marginal break‐ups: back‐arc extension, far‐field stretching, double break‐up, and subduction channel opening. A weak relic suture zone is a prerequisite for continental break‐up and an important factor controlling the mode selection. The back‐arc extension mode occurs for relatively short and shallow dipping highly viscous subducted slabs. The far‐field stretching mode, on the other hand, preferably occurs for spatially long and wide subducted slabs without mid‐ocean ridges. Combining the geological observations, numerical simulations and force balance analyses, the authors propose that the northward, single‐sided Paleo‐Tethys oceanic subduction beneath Laurasia, was most likely responsible for the far‐field break‐up of the Cimmerian terranes from Gondwana. This would have required both pre‐existing relic suture zones and the already subducted mid‐ocean ridge, which thus played an important role in the opening of the Neo‐Tethys Ocean.</jats:p>
Autoren
  • Shuting Yang
  • Zhong‐Hai Li
  • Bo Wan
  • Ling Chen
  • Boris JP Kaus
DOI
10.1029/2020gc009416
eISSN
1525-2027
ISSN
1525-2027
Ausgabe der Veröffentlichung
3
Zeitschrift
Geochemistry, Geophysics, Geosystems
Sprache
en
Online publication date
2021
Datum der Veröffentlichung
2021
Status
Published
Herausgeber
American Geophysical Union (AGU)
Herausgeber URL
http://dx.doi.org/10.1029/2020gc009416
Datum der Datenerfassung
2023
Titel
Subduction‐Induced Back‐Arc Extension Versus Far‐Field Stretching: Contrasting Modes for Continental Marginal Break‐Up
Ausgabe der Zeitschrift
22

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