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ČGS Olomouc

Geological Organ - Nature Monument

An example of the exposed fossil conical karst. It is a geomorphologically exceptional karstic formation with the corrosive and erosive karstic relief of a conical shape created in the tropical Cainozoic climate, which was partially exhumed. The geological organ in the Devonian limestones are filled up with terra rossa and terra fusca and covered with loesses. The site is a part of the north area of the conical Mladeč karst of the Devonian age. The most important karst phenomenon in the Brodka site is the geological organ in the abandoned quarry Brodka near the village of Měrotín. It is an underground karst phenomenon created especially by the dissolution alongside the cracks and on their intersections under the soil cover on the surface of limestones. The geological organ is formed by the vertical depressions of cylindrical, pocket-like or the elongated conical shape. Individual depressions reach the depth of 1 to 10 m. During this process, the depressions were filled in with the bedrock residues and fragments as well as the soil cover material.

GPS position

N 49° 42.217', E 16° 59.772'



Česká geografická společnost
Mgr. Petra Karvánková, Ph.D.
Katedra geografie PF JU v Českých Budějovicích, Jeronýmova 10, 371 15 České Budějovice
Tel.:+420 387 773 063