Overprinting translational domains in passive margin salt basins:insights from analogue modelling
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F19%3A00507724" target="_blank" >RIV/67985530:_____/19:00507724 - isvavai.cz</a>
Result on the web
<a href="https://www.solid-earth.net/10/1283/2019/" target="_blank" >https://www.solid-earth.net/10/1283/2019/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5194/se-10-1283-2019" target="_blank" >10.5194/se-10-1283-2019</a>
Alternative languages
Result language
angličtina
Original language name
Overprinting translational domains in passive margin salt basins:insights from analogue modelling
Original language description
Current models of gravitational tectonics on the structural styles of salt-influenced passive margins typically depict domains of upslope extension and corresponding downslope contraction separated by a mid-slope domain of translation that is rather undeformed. However, an undeformed translational domain is rarely observed in natural systems as extensional and contractional structures tend to interfere in the mid-slope area. In this study, we use sandbox analogue modelling analysed by digital image correlation (DIC) to investigate some of the factors that control the structural evolution of translational domains. As in nature, experimental deformation is driven by slowly increasing gravitational forces associated with continuous basal tilting. The results show that a translational domain persists throughout the basin evolution when the pre-kinematic layer is evenly distributed. However, a thin (1 mm in the experiment, 100 m in nature) pre-kinematic layer can render the translational domain relatively narrow compared to settings with a thicker (5 mm) pre-kinematic layer. In contrast, early differential sedimentary loading in the mid-slope area creates minibasins separated by salt diapirs overprinting the translational domain. Similarly, very low sedimentation rate (1 mm per day in the experiment, < 17 m Ma(-1) in nature) in the early stage of the experiment results in a translational domain quickly overprinted by downslope migration of the extensional domain and upslope migration of the contractional domain. Our study suggests that the architecture of passive margin salt basins is closely linked to the pre- and syn-kinematic cover thickness. The translational domain, as an undeformed region in the supra-salt cover, is a transient feature and over-printed in passive margins with either low sedimentation rate or a heterogeneous sedimentation pattern.
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
Solid Earth
ISSN
1869-9510
e-ISSN
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Volume of the periodical
10
Issue of the periodical within the volume
4
Country of publishing house
DE - GERMANY
Number of pages
18
Pages from-to
1283-1300
UT code for WoS article
000478817400002
EID of the result in the Scopus database
2-s2.0-85073892552