Geology

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In the section Ďumbier a crystal core contains the most resistant Permian period erupted and changed rocks forming preferably a ridge and a south part of the mountains. Wrapping series are mostly formed by Mesozoic sediment rocks. They much less occur in the south part of the mountains but much more in the north. In the Krížňanský Nappe within the Iľanovská Valley via Krakova Hoľa, Poludnica, Ohnište to the Jánska Valley you can find limestones and dolomites of the Chočský Nappe, in which a thick jagged relief occured. Within the above mentioned rocks, particularly in the Demänovská and Jánska Valley, due to intensive carst processes our most extensive cave systems and the deepest abysses were formed. In the south part of the Low Tatras there are only smaller islands of Mesozoic rocks between Moštenica and Mýto pod Ďumbierom or in the surroundings of Kozie Chrbty nearby a chalet of M.R.Štefánik.

In the Staré Hory hills in the west part of the National Park Low Tatras a crystal core comes up on the surface in many small islands. In the past the sediments as well as crystallites rich in ores /mainly copper/, which used to be extracted in the territory of the Staré Hory hills and the Špania Valley. Smaller ore veins were formed along breaks of the crystal core during orogeny /gold in Magurka, stibnite in the Krížska Valley, siderite nearby the village Boca/.

In the part Kráľova Hoľa of the Low Tatras, which belongs to the Vepor zone of central West Carpathian Mountains, a main ridge and south slopes formed especially erupted and source rocks. The north part of the mountains is complex in formation. Limestone and dolomite layers of silicite nappes, forming a part of Slovenský Raj /Slovak Paradise/ and nearby Muráňska Plateau, reach the east end of the Low Tatras nearby Pusté Pole.

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