Sedimentological Characteristics of Upper Triassic (Cordevolian) Circular Quiet Water Coral Bioherms in Western Slovenia, Northwestern Yugoslavia

Čar, Jože; Skaberne, Dragomir; Ogorelec, Bojan; Turnšek, Dragica; Placer, Ladislav

doi:10.2110/pec.81.30.0233

Cited by 8 publications

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Section: Dinarska Karbonatna Plo{~aunclassified

“…Zanje je zna~ilno menjavanje temno sivega do ~rnega laporastega biomikritnega apnenca, skrilavega laporovca, kremenovega pe{~enjaka, apnen~evih konglomeratov ter tufov in tufitov. V tem kompleksu se na {ir{em Cerkljanskem pojavljajo na ve~ mestih od nekaj pa do 40 metrov debeli grebeni (senowBari-daryan & schäFer, 1979;^ar et al 1981;turn{ek et al, 1984), katere gradijo predvsem spongije in v manj{i meri korale (turn{ek, 1997). Po teksturnih zna~ilnostih apnencev in po postopni zrnavosti v plasteh sklepamo na sedimentacijo Amfiklinskih plasti na pregibnem delu karbonatnega {elfa proti Slovenskemu bazenu (turn{ek et al, 1984).…”

Section: Karnijunclassified

“…Characteristic for them is interbedding of dark grey to black marly biomicritic limestone, shaly marlstone, quartz sandstone and conglomerate, tuffs and tuffites. In this complex several up to 40 meters thick reefs occur in the wider Cerkno area (senowBari-daryan & schäFer, 1979;^ar et al, 1981;turn{ek et al, 1984). They are mainly built of sponges and to a lesser degree of corals (turn{ek, 1997).…”

Section: Upper Triassicmentioning

confidence: 99%

“…Only locally an up to several tens of meters thick package of intraformational breccia occur on the contact, which formed during short-term emersion phases accompanied by paleokarstification (Buser, 1979b;oGorelec & rothe, 1992;jurkov{ek et al, 1996). Stromatolites which are typical for Main dolomite gradually disappear, but frequent structural features of the littoral environment -shrinkage pores and desiccation cracks, supratidal conglomerate and laminites -still persist in the Lower Lias beds orehek & oGorelec, 1979orehek & oGorelec, , 1980dozet, 1992a, 1998.…”

Section: Dinaric Carbonate Platformmentioning

confidence: 99%

“…^epovan, Gr~arevec), ki je nastala v kratkotrajnih emerzijskih fazah (Buser, 1979b;oGorelec & rothe, 1992;jurkov{ek et al, 1996). Stromatoliti, ki so zna~ilni za Glavni dolomit, postopno izginjajo, {e vedno pa so v spodnjeliasnih plasteh pogoste teksturne oblike litoralnega okolja -izsu{itvene pore in razpoke, nadplimski konglomerat in laminiti orehek & oGorelec, 1979orehek & oGorelec, , 1980dozet, 1992a, 1998.V srednjem in zgornjem liasu ter doggru opazujemo razli~na okolja znotraj karbonatnega {elfa (Buser, 1979b;orehek & oGorelec, 1979 strohMenGer & dozet, 1990 strohMenGer & dozet, , dozet, 1992a. Na Trnovskem gozdu, Hru{ici, Loga{ki planoti in na Gorjancih se je sedimentacija odvijala na odprtem delu {elfa z vi{jo energijo.…”

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Microfacies of Mesozoic Carbonate

Ogorelec¹

2011

Geologija

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Steklo tanko, kos apnenca, tanek snop svetlobe -~arovnija,nam pri~ara morje plitvo, plažo, ocean globine. Izvle~ekKarbonatne kamnine mezozojske starosti so v Sloveniji precej raz{irjene, saj zavzemajo kar okrog 40 % njenega ozemlja, njihova celotna skladovnica pa je debela preko 5000 metrov. V mikrofaciesu apnencev in dolomitov prepoznamo skoraj vse strukturne tipe, saj so nastajali v razli~nih sedimentacijskih okoljih, zna~ilnih za karbonatne kamnine, tako v odprtih in zati{nih delih karbonatnega {elfa, lagunah in na obrežnih ravnicah, na razli~nih vrstah grebenov, pregibih in v bazenu. Ve~krat so karbonatno sedimentacijo spremljali tudi dotoki terigenega materiala in produkti vulkanskih aktivnosti. Med diagenetskimi procesi raziskanih karbonatnih kamnin imata najve~ji obseg dolomitizacija in okremenitev.V prispevku je predstavljenih 250 mikroskopskih posnetkov zna~ilnih apnencev in dolomitov s slovenskega prostora. V uvodnem delu, v katerem so za orientacijo dodani shematski litostratigrafski stolpci, je na kratko predstavljen geolo{ki razvoj karbonatnih kamnin. Zaradi celostnega prikaza »karbonatnega obdobja« so poleg mezozojskih plasti v pregledu zajeti tudi zgornjepermski apnenci in dolomiti. AbstractCarbonate rocks of Mesozoic age are widespread in Slovenia where they consitute about 40 % of its territory, and attaining total thickness of more than 5000 metres . With respect to microfacies almost all structure types can be recognized, the limestones and dolomites being formed in various sedimentary environments, such as in open and in restricted parts of carbonate shelf, in lagoons and on coastal plains, in different types of reefs, on slopes and in the basin. Carbonate sedimentation was often accompanied also by the supply of terrigenous material and products of volcanic activity. Among diagenetic processes in investigated carbonate rocks the most extensive are dolomitization and silicification.In the present text 250 microscopic photographs of characteristic limestones and dolomites from Slovenian territory are assembled. In the introductory part, to which for orientation schematic stratigraphic columns are added, the geologic development od these carbonate rocks is briefly outlined. For the sake of completeness in presenting the »carbonate era« in the overview, Upper Permian limestones and dolomites are also described next to Mesozoic beds. Carbonate rocks are born ... (James N.P., 1979) Ob 50. obletnici izida klasifikacije karbonatnih kamnin (Folk 1962, Dunham 1962, Ham (ed.) 1962. UVODKarbonatne kamnine mezozojske starosti gradijo okrog 40 % slovenskega ozemlja (Buser & koMac, 2002). V tej, preko 5.000 metrov debeli skladovnici apnencev in dolomitov, ki jih le mestoma prekinjajo klasti~ne sedimentne kamnine, vulkaniti in piroklastiti, zasledimo skoraj vse facialne razvoje, zna~ilne tako za plitvomorska karbonatna okolja kot za globljemorska okolja. Na majhnem prostoru je razvito celotno zaporedje sedimentnih kamnin v stratigrafskem razponu od devona do kvartarja. Ta raznolikost je v precej{nji meri p...

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Section: Dinarska Karbonatna Plo{~aunclassified

Section: Karnijunclassified

Section: Upper Triassicmentioning

confidence: 99%

Section: Dinaric Carbonate Platformmentioning

confidence: 99%

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Microfacies of Mesozoic Carbonate

Ogorelec¹

2011

Geologija

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Evolution of Triassic reefs: Current concepts and problems

Flügel

1982

Facies

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Carnian reefal blocks in the Slovenian Basin, eastern Southern Alps

Gale

Skaberne

Peybernes

et al. 2016

Facies

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The Carnian Amphiclina beds of the eastern Southern Alps mostly consist of shale and sandstone deposited in the deep-marine Slovenian Basin, which was located near the western margin of the Meliata Ocean. In the vicinity of Cerkno (Slovenia), blocks of massive or crudely bedded limestone crop out within a succession of clastic rocks that are several hundred meters thick. Sponge-microbialite boundstone and coral pillarstone are the predominant facies within these blocks. Oncoid floatstone-rudstone and moderately sorted peloid packstone form crudely layered parts of the blocks, whereas intraclast-cortoid packstone and poorly sorted peloid packstone occur locally in cross-stratified thin beds, truncated at block margins. Detailed mapping further shows that limestone blocks form units at discrete stratigraphic levels within shale and that these units are variable in thickness. Whereas the largest blocks mostly lie concordant to the bedding, smaller blocks are poorly sorted and randomly oriented. All of this evidence suggests that the limestone blocks are olistoliths, derived from an outer platform margin and/or uppermost slope

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Sedimentological Characteristics of Upper Triassic (Cordevolian) Circular Quiet Water Coral Bioherms in Western Slovenia, Northwestern Yugoslavia

Cited by 8 publications

References 0 publications

Microfacies of Mesozoic Carbonate

Microfacies of Mesozoic Carbonate

Evolution of Triassic reefs: Current concepts and problems

Carnian reefal blocks in the Slovenian Basin, eastern Southern Alps

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