Kras Frmilske doline v Krajinskem parku Bo?-Dona?ka gora // Karst of Frmile Valley in the Landscape Park Bo?-Dona?ka Gora

摘要

V Krajinskem parku Bo?-Dona?ka gora, na vzhodnem robu slovenskega krasa, imamo ?olski primer pokrajine v kateri se je zakrasevanje povr?ja ?pravkar? pri?elo. Ohranjene so oblike iz katerih lahko spoznamo postopni prehod iz re?nega v kra?ki relief. Frmilska dolina je bila prvotno pore?je v nekarbonatnih kamninah, ki pa je zaradi erozije ?nasedlo? na karbonatno podlago in se prestavilo v podzemlje. Iz nekdaj enotnega pore?ja je nastalo 14 aktivnih slepih dolin in 14 zakraselih re?nih dolin brez povr?inskega vodnega toka. Raz?lenjen povr?inski odtok se nadaljuje v sklenjen podzemni odtok vse do kra?kih izvirov pri Studeni?kem samostanu v dolini Dravinje. Na obmo?ju Frmilske doline lahko opazujemo ?e ve? re?nih in kra?kih pojavov: jame, izvire, presihajo?o mlako, udorno steno, sufozijske vrta?e in po?iralnike v nekarbonatnih kamninah, re?ne terase in suhe ali fosilne meandre v zakraseli dolini, obvisele doline in spodmole.?In the Landscape Park Bo?-Dona?ka Gora (eastern Slovenia), on the eastern edge of the Slovenian karst, we have a textbook example of a territory in which the karstic process has "just" started. There are preserved features, which allow us to understand the transformation from a fluvial landscape to a karstic one. Frmile Valley was originally a river valley in non-carbonate rocks, but due to erosion it became stranded on carbonate rocks. Its waters were mostly transferred to the underground drainage. Fragmentation of the former river valley formed 14 active blind valleys and 14 inactive river valleys that already lost all surface water to the underground drainage. The disconnected surface runoff recharges the same karst aquifer which springs are located at the Studenice Monastery in the Dravinja Valley. In the area of Frmile Valley several fluvial and karstic features can be observed, i.e. caves, springs, a periodic pond, a hill slope collapsed into an underground cave, numerous suffosion dolines and ponors in the non-carbonate rocks, river terraces, dry or fossil meanders in karst valley, hanging valleys, a rock shelter.