From Oblique Thrust to Strike-Slip Fault: Progressive Stages of an Accretionary Wedge Development
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F25%3A00636907" target="_blank" >RIV/67985891:_____/25:00636907 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/25:00144334
Result on the web
<a href="https://doi.org/10.2113/2024/lithosphere_2024_182" target="_blank" >https://doi.org/10.2113/2024/lithosphere_2024_182</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2113/2024/lithosphere_2024_182" target="_blank" >10.2113/2024/lithosphere_2024_182</a>
Alternative languages
Result language
angličtina
Original language name
From Oblique Thrust to Strike-Slip Fault: Progressive Stages of an Accretionary Wedge Development
Original language description
Accretionary wedges of orogenic belts develop differently based on the direction of thrusting, which can be perpendicular to oblique to the belt. In the case of oblique thrusting, stress partitioning occurs, which dissects the accretionary wedge, changes the tectonic regime from thrusting to strike-slip, and causes the external parts to rotate laterally. The relationship between stress partitioning and external rotation is not yet fully understood and has typically been studied separately. This study investigates the Falkenstein-Mikulov fault zone in the Outer Western Carpathians (OWC) wedge as an illustrative example of the relationship between partitioning and rotation. Using a prominent limestone marker horizon and a multidisciplinary approach-including geomorphological analysis, geological mapping, paleostress analysis, and shallow and deep-seismic geophysical surveys-we defined the fault zone's unique arcuate geometry and identified several stages of tectonic activity. Paleostress inversion reveals multiple tectonic phases highlighting a transition from thrusting to strike-slip faulting. After thrusting (Phase D1), transversal strike-slip faults segmented the wedge coinciding with significant counterclockwise rotational patterns (Phase D2). Finally, during Phase D3, an arcuate strike-slip fault zone parallel to thrusting direction evolved, also revealing rotation of 12 degrees over a distance of 10 km. These phases interplayed in the accretionary wedge at the same time, and their apparent succession is the result of shifting of the tectonic activity during the progressive development of the wedge. Thus, the thrusting activity in the front of the wedge was followed by rotational motion along the lateral ramps and finalized by parallel strike-slip faulting. This model explains how accretionary wedges undergo external rotation due to curved strike-slip faulting in the final stages of thrusting and has significant implications for understanding the broader tectonic evolution of accretionary wedges worldwide.
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
—
OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GC22-24206J" target="_blank" >GC22-24206J: Earthquake-triggered landslides in recently-active and stabilized accretionary wedges</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Lithosphere
ISSN
1941-8264
e-ISSN
1947-4253
Volume of the periodical
2024
Issue of the periodical within the volume
APR
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
182
UT code for WoS article
001509483100001
EID of the result in the Scopus database
2-s2.0-105006882417