Initiating Salt Tectonics by Tilting: Viscous Coupling Between a Tilted Salt Layer and Overlying Brittle Sediment.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F21%3A00544588" target="_blank" >RIV/67985858:_____/21:00544588 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0321429" target="_blank" >http://hdl.handle.net/11104/0321429</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2020JB021503" target="_blank" >10.1029/2020JB021503</a>
Alternative languages
Result language
angličtina
Original language name
Initiating Salt Tectonics by Tilting: Viscous Coupling Between a Tilted Salt Layer and Overlying Brittle Sediment.
Original language description
Salt basins often exhibit a shelf/slope region of extension and a deeper domain of contraction. The up-slope normal faults in such salt tectonics systems are often associated with the pinch-out edge of the buried salt layer. Although the spatial correlation between the normal faults and the salt pinch-out was previously observed, the mechanism was not fully explained. The Levant basin, which is a young and mildly deformed salt basin with a relatively thin overburden, provides an opportunity to analyze a simple salt tectonics system driven by basin margin tilt, and the formation of the normal faults. This work presents analytical and numerical modeling of the coupled viscous salt and overlying visco-plastic sediment layer. Results suggest the viscosities of both the sediment overburden and salt, as well as their thicknesses, control the deformation of the coupled layers. The visco-plastic deformation mechanism explains quantitatively the position of faulting and observations of the temporal evolution of brittle deformation in the Levant basin margin. It predicts that the largest stress in the overburden arises above the salt edge, driving normal faulting at that location. Our model also places quantitative constraints on the effective viscosity of the overburden (>2 × 1020 Pa s), which is consistent with experimentally-determined creep laws. Our results contribute to the understanding of halokinematics in salt basins during the early stages of deformation and will allow better assessment of geological hazards related to salt related deformation.
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
<a href="/en/project/GJ19-21114Y" target="_blank" >GJ19-21114Y: Granular mechanics of dynamically-triggered earthquakes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Geophysical Research-Solid Earth
ISSN
2169-9313
e-ISSN
2169-9356
Volume of the periodical
126
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
31
Pages from-to
e2020JB021503
UT code for WoS article
000678880700058
EID of the result in the Scopus database
2-s2.0-85111492391