Lithology and biostratigraphy of the Godula Formation within the Kněhyně Cave
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F20%3A10245350" target="_blank" >RIV/61989100:27350/20:10245350 - isvavai.cz</a>
Result on the web
<a href="http://www.geology.cz/img/zpravyvyzkum/fulltext/019_Kasing_200509.pdf" target="_blank" >http://www.geology.cz/img/zpravyvyzkum/fulltext/019_Kasing_200509.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3140/zpravy.geol.2020.03" target="_blank" >10.3140/zpravy.geol.2020.03</a>
Alternative languages
Result language
čeština
Original language name
Litologie a biostratigrafie godulského souvrství v Kněhyňské jeskyni
Original language description
The research of pseudokarst caves in the Outer Western Carpathians is considered to be an important approach for recognition of various features of slope failures, e.g. its internal structure, depth, spatial extent, structural control, recent movement, age, etc. However, lithology and stratigraphy of rocks exposed inside the pseudokarst caves are still completely neglected. The results of petrographic, mineralogical and micropaleontological study of beds exposed in walls of the Kněhyně Cave are presented. Situated within southeastern slope of the Kněhyně Mt. in the Moravskoslezské Beskydy Mts., the Kněhyně Cave is a crevice-type cave developed within the middle member of the Godula Formation in the Silesian Unit. The investigation within the Kněhyně Cave enabled us to document the complete vertical profile of the cave. The lithological section of the cave represents a typical proximal flysch sequence characterized by alternation of the coarse-grained sandstones with thickness often reaching ~ 3.5 m and up to ~0.06m thick aleuropelites. The mineralogical and paleontological analyses were carried out on 5 rock samples representing the finest members of turbidite cycle, corresponding to Td/Te interval of the Bouma sequence. High content of mica (50-70 vol. % of illite-muscovite; apparently 2M1 and 1M polytypes) and feldspar minerals (albitic plagioclase, potash feldspars) were proved by X-ray powder diffraction analysis. The amount of quartz is low (8 wt. %). The aleurites/pelites contain a large number of phytoclasts and deep-water dinoflagellates, indicating a material redeposition by turbidity currents. The identified dinoflagellate assemblages may be assigned to Lower/Upper Campanian transition.
Czech name
Litologie a biostratigrafie godulského souvrství v Kněhyňské jeskyni
Czech description
The research of pseudokarst caves in the Outer Western Carpathians is considered to be an important approach for recognition of various features of slope failures, e.g. its internal structure, depth, spatial extent, structural control, recent movement, age, etc. However, lithology and stratigraphy of rocks exposed inside the pseudokarst caves are still completely neglected. The results of petrographic, mineralogical and micropaleontological study of beds exposed in walls of the Kněhyně Cave are presented. Situated within southeastern slope of the Kněhyně Mt. in the Moravskoslezské Beskydy Mts., the Kněhyně Cave is a crevice-type cave developed within the middle member of the Godula Formation in the Silesian Unit. The investigation within the Kněhyně Cave enabled us to document the complete vertical profile of the cave. The lithological section of the cave represents a typical proximal flysch sequence characterized by alternation of the coarse-grained sandstones with thickness often reaching ~ 3.5 m and up to ~0.06m thick aleuropelites. The mineralogical and paleontological analyses were carried out on 5 rock samples representing the finest members of turbidite cycle, corresponding to Td/Te interval of the Bouma sequence. High content of mica (50-70 vol. % of illite-muscovite; apparently 2M1 and 1M polytypes) and feldspar minerals (albitic plagioclase, potash feldspars) were proved by X-ray powder diffraction analysis. The amount of quartz is low (8 wt. %). The aleurites/pelites contain a large number of phytoclasts and deep-water dinoflagellates, indicating a material redeposition by turbidity currents. The identified dinoflagellate assemblages may be assigned to Lower/Upper Campanian transition.
Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
—
OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/LO1406" target="_blank" >LO1406: Institute of clean technologies for mining and utilization of raw materials for energy use -Sustainability program</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
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geoscience Research Reports
ISSN
0514-8057
e-ISSN
—
Volume of the periodical
53
Issue of the periodical within the volume
1
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
6
Pages from-to
19-24
UT code for WoS article
—
EID of the result in the Scopus database
2-s2.0-85091130340