This book draws together the major recent advances in the modeling of karst systems. Based on the dissolution kinetics of limestone, and flow and transport processes in its fractures, it presents a ...hierarchy of cave genetic situations that range from the enlargement of a single fracture to the evolution of cavernous drainage patterns in confined and unconfined karst aquifers. These results are also applied to the evolution of leakage below dam sites in karst. The book offers a wealth of informations that help to understand the development of cave systems. It addresses geologists, hydrologists, geomorphologists, and geographers. It is also of interest to all scientists and engineers who have responsibilities for groundwater exploration and management in karst terrains. A CD including all figures figures from the nook and numerous animations presenting the results is enclosed.
Author describes the evolution of the caves and karst surface of the Divaški kras, an area above caves Škocjanske jame and Kačna jama. This karst is with 18 km of known cave passages, accessible to ...the depth of 280 m, one of the most interesting karst areas in Slovenia. There are descriptions of the oldest caves that are because of the denudation of the surface in shallow depth or surface already cuts trough them. These unroofed caves, which can be found there, enable the reconstruction of the oldest phases of the karst formation. In following chapter cave system of Škocjanske jame – Kačna jama is presented. In these two caves was with the analysis of the geological structure and comparison of the for these two caves geological structures, passage morphology, and recent sediments were sediments analysed in order to get evolution of the caves. Special attention was paid to the large chambers, canyons and collapse dolines. The hydrology of the underground river Reka is described, especially the bifurcations to several separated streams. In special chapter there are results of the datations of the stalagmites and other flowstone which dates some phases in cave evolution and well reflects the past climatic changes. In well designed book with rich photographic material an extensive bibliography is added and summary in Slovene and English language.
The Postojnska jama cave system represents a union of old, now dry, horizontal cave passages, the Pivka river active passage, and shafts or collapse dolines, which enable surface connection with some ...cave passages. The present entrance to the cave is formed at the contact between the Postojna basin impermeable Eocene flysch and the Upper Cretaceous limestone. The Pivka river sink entrance is formed along interbedded movements in the horizontal direction, and in the vertical direction it lies in a strong tectonic fault zone of NE-SW direction. The cave passages are formed in tectonic deformations which developed by the formation of the Postojna anticline, as there are interbedded movements, and in later fault deformations, where the main tectonic fault zones directions are the Dinaric NW-SE and cross-Dinaric NE-SW. Besides two main fault directions, the accompanying broken and fissured zones which are the result of the fault Dinaric tectonics are also favourable to cave formation.
Osim speleološke i turističke atraktivnosti, špilja Veternica čuva bogatstvo informacija o okolišnim uvjetima koji su vladali u geološkoj prošlosti. Sedimentne naslage ove špilje bile su predmet ...brojnih istraživanja, koja su posebno ojačala od sredine 20. stoljeća. U ovom radu dajemo sažeti povijesni prikaz geoloških istraživanja i detaljnije predstavljamo rezultate novih istraživanja provedenih u posljednjih dvadesetak godina. Kombiniranjem speleomorfološkog kartiranja, paleomagnetskih analiza potočnih (klastičnih) sedimenata te analiza određivanja starosti siga uran-torij (U-Th) metodom prvi su put dobiveni kronološki podaci o razvoju špilje Veternice tijekom posljednjih više od 600 000 godina geološke prošlosti. Izdvojeno je nekoliko speleogenetskih faza, koje su odraz izmjena dugih stabilnih i kraćih tektonski aktivnih razdoblja šireg područja. Tijekom razdoblja aktivnog tektonskog izdizanja Medvednice i posljedičnog spuštanja razine erozijske baze morfologija kanala brzo se prilagođavala brzini opadanja razine podzemne vode od oko 6 m u 10 000 godina. Pad razine vode usporediv je sa stopama izmjerenima u drugim špiljama smještenima u sličnim tektonski aktivnim područjima.
Špilja u kamenolomu Debeljača Paar, Dalibor; Ujević, Petra
Subterranea Croatica,
12/2005, Letnik:
3, Številka:
5
Paper
Odprti dostop
Špilja u kamenolomu Debeljača otkrivena je 2004. godine kada se tijekom miniranja u kamenolomu u blizini Lovinca u južnom dijelu Like otvorila 25-metarska jama. Špilja je istražena tijekom 2004. ...godine do 723 m duljine i 63 m dubine. Špilju karakteriziraju strujnice velikih dimenzija, te brojni koraloidi pri njenom kraju. Mjestimični eliptični oblici kanala posljedica su ranijih faza speleogeneze. Špilja je u postupku zaštite od strane Državnog zavoda za zaštitu prirode.
U radu su izneseni rezultati speleomorfoloških i geoloških istraživnja špilje te rezultati fazne analize uzoraka sedimenata iz špilje. Usporedbom dobivenih rezultata s dosadašnjim spoznajama o ...geologiji, hidrogeologiji i strukturno-tektonskim odnosima šireg područja dane su osnove speleogeneze istraživane špilje
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