Progressive tilting of salt-bearing continental margins controls thin-skinned deformation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F19%3A00509339" target="_blank" >RIV/67985530:_____/19:00509339 - isvavai.cz</a>
Result on the web
<a href="https://pubs.geoscienceworld.org/gsa/geology/article/47/12/1122/573873/Progressive-tilting-of-saltbearing-continental" target="_blank" >https://pubs.geoscienceworld.org/gsa/geology/article/47/12/1122/573873/Progressive-tilting-of-saltbearing-continental</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1130/G46485.1" target="_blank" >10.1130/G46485.1</a>
Alternative languages
Result language
angličtina
Original language name
Progressive tilting of salt-bearing continental margins controls thin-skinned deformation
Original language description
As a primary driving force, margin tilting is crucial for gravity-driven thin-skinned salt tectonics. We investigated how instant versus progressive margin tilting mechanisms influence salt tectonics using an analogue modeling setup where tilting rate could be controlled. Instant tilting resulted in initially high deformation rates, triggering widely distributed upslope extension and downslope contraction. Later, both the extensional and contractional domains migrated upslope as early extensional structures were successively deactivated, while deformation rates decreased exponentially. In contrast, progressive tilting led to downslope migration of the extensional domain by sequentially formed, long-lived normal faults. Contraction localized on a few, long-lived thrusts before migrating upslope. We attribute the distinct structural evolution of thin-skinned deformation, especially in the extensional domain, in the two tilting scenarios mainly to mechanical coupling between the brittle overburden and underlying viscous material. The coupling effect in turn is largely controlled by the deformation rate. By demonstrating the spatiotemporal variations of structural style and kinematic evolution associated with instant versus progressive tilting, we suggest that such variation is identifiable in nature and therefore can provide a new way to analyze margin tilting histories.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geology
ISSN
0091-7613
e-ISSN
—
Volume of the periodical
47
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
1122-1126
UT code for WoS article
000504335600010
EID of the result in the Scopus database
2-s2.0-85078023274