1. Rastje in rastlinstvo povodja Gačnika na Vojskem in v Trebuši – prispevek za njegovo naravovarstveno vrednotenjeIgor Dakskobler, Jože Čar, Anka Rudolf, Rafael Terpin, Branko Vreš, 2021, izvirni znanstveni članek Povzetek: V članku smo povzeli rezultate naših raziskav rastja in rastlinstva v povodja Gačnika na Vojskem in v Trebuši v zahodni Sloveniji. Naštevamo najbolj pogoste in najbolj značilne rastlinske združbe, zavarovane in redke rastline in naravovarstveno vredne habitatne tipe. Slednjih je vsaj sedem. V njihovih združbah uspevata dve Natura 2000 vrsti (Primula carniolica, Cypripedium calceolus) in skoraj 60 zavarovanih in (ali) redkih cevnic (rdeči seznam). Med združbami so najbolj ogrožena mokrišča (nizka barja in mokrotni travniki) in njihove značilne vrste: Drosera rotundifolia, Dactylorhiza lapponicasubsp. rhaetica, D. traunsteineri, Eleocharis quinqueflora,Eriophorum angustifolium, E. latifolium, Pinguicula vulgaris in Trichophorum alpinum.
Ključne besede: vegetacija, flora, mokrišča, nizka barja, Natura 2000, Slovenija
Objavljeno v DiRROS: 14.01.2026; Ogledov: 484; Prenosov: 332
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2. Geologic structure and origin of the Zadlog karst poljeJože Čar, Ela Šegina, 2024, izvirni znanstveni članek Povzetek: In the wider Idrija area in western Slovenia, several large plains formed along the thrusts within the dolomite and at the contact of dolomite and limestone. The purpose of this paper is to present the detailed structural-geological background of one such plain, namely the Zadlog plain, and based on these findings, to provide new starting points for analyzing the genetic conditions of other karst poljes in Notranjska. The Zadloško polje was formed in a wider near-fault crushed zone at the contact of two structural units within the Upper Triassic Norian-Rhaetian dolomite, with the thrust crossing the polje in its central part. The initially lowered area at the thrust represented a morphological basis, and the crushed zones in the dolomite played a hydrological retention role inducing the stagnation of surface water and, as a result, the formation of the karst polje. Younger fault tectonics then established efficient drainage of surface water and the erosion of sediments to the karst underground. Besdies this, slope equilibration leads us to conclude that the karst polje capability of hydrologic retention is recently decreased. The example of Zadloško polje shows that the thrust structures and associated hydrological conditions are the key elements for the formation of karst poljes in the dissected karst surface. Further detailed structural-geological mapping will reveal whether similar structural-geological conditions are the basis for the formation of other karst poljes in the region.
Ključne besede: karst polje, thrust and fault tectonics, dolomite, hydrogeology, Zadlog, Zadloško polje
Objavljeno v DiRROS: 21.05.2025; Ogledov: 879; Prenosov: 366
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3. Middle Triassic deeper-marine volcano-sedimentary successions in western SloveniaDragomir Skaberne, Jože Čar, Maja Pristavec, Boštjan Rožič, Luka Gale, 2024, izvirni znanstveni članek Povzetek: A Ladinian – Carnian volcano-sedimentary succession from western Slovenia, paleogeographically belonging to the western Slovenian Basin, is presented in 17 sections. Except for the lowermost part, which is dominated by volcanics and volcaniclastics, most of the succession is dominated by shale, sandstone, and micritic limestone. Various authors use the name Pseudozilja and/or Amphiclina formation for this part, which is dominated by clastics, but they disagree on the differences between the formations. The lower Pseudozilja formation, represented by the Malenski Vrh section, comprises diabase, tuf and shale. No substantial differences in lithological composition have been observed between the upper Pseudoziljaformation and the Amphiclina formation, which are predominantly composed of shale, sandstone, and limestone. The shale and sandstone are largely composed of quartz, feldspar, and lithic grains (especially volcanics), which vary in proportions. Limestone varieties comprise hemipelagic limestones and resedimented carbonates deposited by gravity-flows. Deposition of the Ladinian – Carnian volcano-sedimentary succession took place on or near the continental slope that was generally inclined to the S, with the direction of transport mainly from N to S.
Ključne besede: stratigraphy, carbonate-siliciclastic deposits, Slovenian Basin, Middle Triassic, Ladinian, Carnian, Pseudozilja formation, Amphiclina formation
Objavljeno v DiRROS: 09.07.2024; Ogledov: 1310; Prenosov: 559
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4. Strukturne razmere na stiku Južnih Alp in Dinaridov na zahodnem CerkljanskemJože Čar, Jernej Jež, Blaž Milanič, 2021, izvirni znanstveni članek Povzetek: Ozemlje med vasmi Reka v dolini Idrijce, Bukovo pod Kojco in Zakriž pri Cerknem pripada v geografskem in geotektonskem pogledu Dinaridom. Gradijo ga kamnine dveh obsežnih narivnih enot Trnovskega pokrova, ki so bile za več deset kilometrov narinjene od severovzhoda proti jugozahodu v današnjo lego. Preko njih so narinjene kamnine Tolminskega pokrova, ki je na obravnavanem ozemlju najnižja narivna enota Južnih Alp. Pokrov sestavljajo dve notranji narivni grudi in vmesna narivna luska. Narivne enote so bile narinjene od severa proti jugu. V zahodnem delu obravnavanega območja stik med Južnimi Alpami in Dinaridi poteka ob Sovodenjskem prelomu.Kljub temu, da so kamnine v obravnavanih narivnih enotah približno enake starosti, lahko prepoznamo dva različna stratigrafska razvoja. Posebej izstopa problematika razvoja ladinijsko-spodnjekarnijskih psevdoziljskih plasti, to je zaporedja klastičnih in karbonatnih kamnin, ki se je odložilo v globljemorskem okolju Slovenskega bazena. Tako v Trnovskem kot tudi v Tolminskem pokrovu najdemo psevdoziljske plasti razvite v podobnem, litološko značilnem zaporedju, a so v Tolminskem pokrovu razvite v precej večji debelini kot v Trnovskem pokrovu in navzgor zvezno prehajajo v amfiklinske plasti, medtem ko je debelina psevdoziljskih plasti v Trnovskem pokrovu precej manjša, v normalnem zaporedju pa na njih leži platformni cordevolski dolomit.
Ključne besede: narivna zgradba, Trnovski pokrov, Tolminski pokrov, Južne Alpe, Dinaridi, Slovenski bazen, trias, psevdoziljske plasti
Objavljeno v DiRROS: 09.03.2022; Ogledov: 2945; Prenosov: 913
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5. Linear features on karst surfaces: an example from Krk IslandEla Šegina, Čedomir Benac, France Šušteršič, Martin Knez, Jože Čar, 2021, izvirni znanstveni članek Povzetek: Krk Island located in the Dinaric karst is characterized by somewhat contradictory, yet undefined depressions of linear geometry. A comprehensive spatial analysis considering over 900 linear features served as a testing ground for revealing the specific circumstances required for the occurrence of the linear morphology on the surface of rather pure karst typically characterized by dolines. Morphological characteristics, spatial distribution and field evidence imply that linear features of different appearance are the outcome of several different mechanisms including speleogenesis and denudation, slope processes and erosion by the torrential surface runoff. Surface runoff occurred due to specific regional geological, morphological and climate conditions in the area. Recently, such linear features exhibit a dry valley- or dry gorge-like appearance. This example from the Dinarides provides insight into the possible circumstances that may cause a temporal surface runoff even in rather pure karst conditions. This knowledge is valuable for understanding other karst areas expressing temporal surface runoff or imprints of its past occurrences.
Ključne besede: kras, geomorfologija, prostorska analiza, suhe kraške doline, linearne oblike
Objavljeno v DiRROS: 03.03.2022; Ogledov: 2570; Prenosov: 844
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