Allochthonous fine-grained sediments and their relation to the genesis of Liskovská jaskyňa cave (Chočské Foothills, Northern Slovakia) [Alochtónne jemnozrnné sedimenty a ich vztah ku genéze Liskovskej jaskyne (Chočské podhorie, severné Slovensko)]
Bonova K.,Ustav Geografie |
Bella P.,Katedra Geografie |
Kovacik M.,Statny Geologicky Ustav D. Stura RC Kosice |
Bona J.,Kpt. Jarosa 13 |
And 3 more authors.
Acta Geologica Slovaca | Year: 2014
A combination of sedimentological and mineralogical methods with emphasis on heavy mineral assemblage research applied to allochthonous sediments in the Liskovská jaskyňa Cave located in the western part of the Liptovská kotlina Basin (in the tectonic horst composed of Triassic limestones at foothills of the Chočské vrchy Mts.) were used for the identification their provenance and sedimentary history. Allochthonous fine-grained sediments were studied in three profiles (LI-1 to LI-3). The sediments originated mostly from the suspension in slow water flow to stagnant water (slackwater facies). This material could be later redeposited during the younger flooding event and small-scale slumps and gravity flows (mudflows) have been locally generated on steeper cave floors. Based on mineralogical study the cave sediments are composed of quartz, muscovite, calcite, chlorite, K-feldspar, plagioclase and dolomite. A heavy mineral assemblage is formed by garnet, zircon, apatite, monazite, tourmaline, staurolite, amphibole, rutile, titanite, epidote, sillimanite, allanite, andalusite, pyroxene and xenotime. Opaque minerals are represented by ilmenite, pyrite, magnetite, Cr-spinel, hematite, Cu-sulfides and Fe-oxyhydroxides. Their mineralogical character indicates the heterogenous source material which was transported by the Váh River. The results are significant for a more accurate reconstruction of origin and development of the cave, mainly its sedimentary phases in Middle and Late Pleistocene related to floods from the adjacent river bed.