Contribution of gravity gliding in salt-bearing rift basins - a new experimental setup for simulating salt tectonics under the influence of sub-salt extension and tilting

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F21%3A00546159" target="_blank" >RIV/67985530:_____/21:00546159 - isvavai.cz</a>

Result on the web

<a href="https://se.copernicus.org/articles/12/1987/2021/se-12-1987-2021-discussion.html" target="_blank" >https://se.copernicus.org/articles/12/1987/2021/se-12-1987-2021-discussion.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5194/se-12-1987-2021" target="_blank" >10.5194/se-12-1987-2021</a>

Result language

angličtina

Original language name

Contribution of gravity gliding in salt-bearing rift basins - a new experimental setup for simulating salt tectonics under the influence of sub-salt extension and tilting

Original language description

Basin-scale salt flow and the evolution of salt structures in rift basins is mainly driven by sub- and supra-salt faulting and sedimentary loading. Crustal extension is often accompanied and followed by thermal subsidence leading to tilting of the graben flanks, which might induce an additional basinward-directed driver for salt tectonics. We designed a new experimental analogue apparatus capable of integrating the processes of sub-salt graben extension and tilting of the flanks, such that the overlapping effects on the deformation of a viscous substratum and the brittle overburden can be simulated. The presented experimental study was performed to demonstrate the main functionality of the experimental procedure and setup, demonstrating the main differences in structural evolution between conditions of pure extension, pure tilting, and extension combined with tilting. Digital image correlation of top-view stereoscopic images was applied to reveal the 3D displacement and strain patterns. The results of these experiments suggest that in salt basins affected by sub-salt extension and flank inclination, the salt flow and downward movement of overburden affects the entire flanks of the basin. Supra-salt extension occurring close to the graben centre is overprinted by the downward movement, i.e. the amount of extension is reduced or extensional faults zones are shortened. At the basin margins, thin-skinned extensional faults developed as a result of gravity gliding. A comparison with natural examples reveals that such fault zones can also be observed at the margins of many salt-bearing rift basins indicating that gravity gliding played a role in these basins.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10505 - Geology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Solid Earth

ISSN

1869-9510

e-ISSN

1869-9529

Volume of the periodical

12

Issue of the periodical within the volume

8

Country of publishing house

DE - GERMANY

Number of pages

34

Pages from-to

1987-2020

UT code for WoS article

000692059400001

EID of the result in the Scopus database

2-s2.0-85114116396