Soft-sediment deformation structures in cave deposits and their possible causes (Kalacka Cave, Tatra Mts., Poland)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F20%3A00541402" target="_blank" >RIV/67985831:_____/20:00541402 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S019181412030081X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S019181412030081X</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jsg.2020.104161" target="_blank" >10.1016/j.jsg.2020.104161</a>
Alternative languages
Result language
angličtina
Original language name
Soft-sediment deformation structures in cave deposits and their possible causes (Kalacka Cave, Tatra Mts., Poland)
Original language description
Clastic deposits in Kalacka Cave in the Tatra Mts. Show soft-sediment deformation structures (SSDS) rare for a cave environments. The poorly sorted allochthonous sediments were deposited within a cave sump under a fluvial regime, likely due to glacially initiated back-flooding during the Last Glacial. The structures include smallscale faults (normal and reverse), folds (upright symmetric anticlines, low-amplitude open folds, W-vergent folds and fault-propagation folds), and water-escape structures. A laboratory experiment is used to assess the possibile liquefaction of a thin soft-sediment filling in a limestone tube, including calculation of the site effects of resonance frequency and amplification coefficient and the site vulnerability index Kg. The calculations indicate that seismic waves can be amplified up to 10 times and the expected resonance frequency is ~17.05 Hz. We argue that the observed SSDS formed in two stages. First, brittle and ductile deformation structures developed due to gravity-induced slumping. Next, liquefaction produced water-escape structures. The studied SSDS were likely seismically triggered. Favorable conditions occurred during the withdrawal of the last glacier (MIS 2) when the sediments were oversaturated and the Tatra Mts. experienced a strong earthquake (M7.0). Alternatively, high-frequency microearthquakes could have been triggered by slope failure cutting into Kalacka Cave.
Czech name
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Czech description
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Classification
Type
J<sub>ost</sub> - Miscellaneous article in a specialist periodical
CEP classification
—
OECD FORD branch
10505 - Geology
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
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 Structural Geology
ISSN
0191-8141
e-ISSN
1873-1201
Volume of the periodical
140
Issue of the periodical within the volume
November
Country of publishing house
GB - UNITED KINGDOM
Number of pages
14
Pages from-to
104161
UT code for WoS article
000591600100001
EID of the result in the Scopus database
2-s2.0-85090228480