Morphogenetical Aspects of Collapse Dolines and Open Pits in the Karst of the Venetian Fore-Alps

Avtor ugotavlja 6 vzrokov nastajanja udornic in odpiranja novih brezen v Beneskih Predalpah: udor stropa, obglavljenje podzemeljske jame, povezava speleogenetskih procesov z dinamiko v epikrasu, polzenje polnila v jame, polzenje pokrova iz nevezane kamnine, odpiranje zaradi potresov. Tip krasa na obravnavanem ozemlju je povrsinski odraz razvoja odtocnih struktur v epikrasu. The author found 6 reasons related to formation of collapse dolines and openings of karst shafts in Venetian Fore-Alps: a) collapse of the roof, decapping of hypogean cavity, speleogenesis and dynamics of the epikarst, swallowing of filling materials inside hypogean voids, swallowing cover of loose materials, opening by seismic shocks.