Old but still active: > 18 ka history of rock slope failures affecting a flysch anticline
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F21%3AA22025ZH" target="_blank" >RIV/61988987:17310/21:A22025ZH - isvavai.cz</a>
Alternative codes found
RIV/67985891:_____/21:00541322 RIV/00216208:11310/21:10434380
Result on the web
<a href="http://link.springer.com/10.1007/s10346-020-01483-7" target="_blank" >http://link.springer.com/10.1007/s10346-020-01483-7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10346-020-01483-7" target="_blank" >10.1007/s10346-020-01483-7</a>
Alternative languages
Result language
angličtina
Original language name
Old but still active: > 18 ka history of rock slope failures affecting a flysch anticline
Original language description
The Czech part of the Outer Western Carpathians (COWC) formed by flysch rocks is among the most landslide-prone areas in Europe. Recent LiDAR-based inventory mapping reveals that the area of the COWC encompasses more than 13,500 landslides, with some geological domains exhibiting > 20% of the surface area covered by landslides. Although mass movements represent crucial geomorphic agents in the COWC, their timing and especially lifespan remain elusive. In this study, we focused on rockslides affecting the flanks of the flysch anticline developed within Paleogene sandstones. The area (“Hradisko” ridge) is well known as the most extensive rock city in the COWC. Structural-geological investigation, kinematic analysis and the application of near-surface geophysics (ERT, GPR and seismic refraction) suggest that rockslides accompanied by toppling and lateral spreads are predisposed by the architecture of bedding planes, joints and inherited faults cross-cutting the anticlinal ridge. Based on 10Be exposure dating of five scarps and rockslide boulders (a total of 25 cosmogenic-dated samples), we were able to reconstruct the long-term history of rock slope failures. Although the obtained ages of headscarp exposures reveal consistent patterns suggesting major mass movement phases at ~ 18 ka and ~ 12 ka, the interpretation of boulder exposure ages is ambiguous. The study area has not been affected by catastrophic slope failure in historic times, but dendrogeomorphic analysis reveals surprisingly strong tree ring signals of mass movements within the last 150 years. These findings suggest that progressive failure is developing within some parts of the rockslide and/or slope portions above the major scarp.
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
10508 - Physical geography
Result continuities
Project
<a href="/en/project/GA19-01866S" target="_blank" >GA19-01866S: Ancient landslides: really inactive?</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
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
LANDSLIDES
ISSN
1612-510X
e-ISSN
1612-5118
Volume of the periodical
18
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
15
Pages from-to
89-104
UT code for WoS article
000552175100001
EID of the result in the Scopus database
2-s2.0-85088567646