An Upper Jurassic Reef Complex From Slovenia, Yugoslavia

Turnšek, Dragica; Buser, Stanko; Ogorelec, Bojan

doi:10.2110/pec.81.30.0361

Cited by 37 publications

(45 citation statements)

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“…grabenensis Germovshek, were also described from a Late Jurassic reef belt in Slovenia, the continuation of which has been suggested to be in Albania (Milan 1969;Turnšek 1966;Turnšek et al 1981). These taxa are typical for the frontal reef part at the platform margin (Turnšek et al 1981: "actinostromariid Zone"), which explains their occurrence in deposits like the slope deposits and mass-flows of the Kurbnesh Formation. Both taxa are -according to our knowledge -only known from their type locality in Slovenia (Turnšek 1966) and the northern Velebit/Velika Kapela region in Croatia (Milan 1969).…”

Section: Slovenia and Croatiamentioning

confidence: 99%

The eroded Late Jurassic Kurbnesh carbonate platform in the Mirdita Ophiolite Zone of Albania and its bearing on the Jurassic orogeny of the Neotethys realm

et al. 2008

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Several Late Jurassic (Kimmeridgian?-Tithonian) to Early Cretaceous (Late Berriasian-Valanginian) shallow-water carbonate clasts of different facies are contained in mass-flow deposits in a pelagic sequence in the Kurbnesh area of central Albania. These clasts are used to reconstruct shallow-water carbonate platforms, which formed on top of the radiolaritic-ophiolitic wildflysch (ophiolitic mélange) of the Mirdita Zone. Stratigraphic interpretation of the platform carbonates was compiled on basis of calcareous algae, benthic foraminifera, and calpionellids. From biostratigraphic data and microfacies analysis, the Neocomian clasts can be directly correlated with autochthonous platform carbonates of the western part of the Munella carbonate platform, which at least reaches up to the Late Aptian. A Late Jurassic precursor platform (Kurbnesh carbonate platform; nomen novum) was completely eroded until the Valanginian and is only documented by the clasts described here. It was deposited on top of the Mirdita Ophiolite Zone nappe stack, which formed during the Middle to Late Jurassic Kimmeridian orogeny. Thrusting and imbrications as well as the formation of the syntectonic wildflysch (mé-lange) therefore occurred much earlier than previously assumed. Our results constrain the Kimmeridian orogeny, which was controlled by the closure of the Neotethys Ocean, and show excellent correlation with the Eastalpine-Dinaric-Hellenic orogenic system. ZUSAMMENFASSUNGAus mikrofaziell unterschiedlichen Ober-Jura-(Kimmeridgium?/Tithonium) und Unter-Kreide-Flachwasserkalk-Klasten (Ober-Berriasium bis Valanginium), die in Form von Brekzienkörpern in pelagischen Sedimenten in der Gegend von Kurbnesh in Zentral-Albanien auftreten, werden jene Karbonatplattformen rekonstruiert, welche ursprünglich die Serie des radiolaritischenophiolithischen Wildflysches (Ophiolith-Mélange) in der Mirdita-Zone bedeckten. Die Stratigraphie basiert auf Kalkalgen, Benthosforaminiferen und Calpionellen. Stratigraphische und mikrofazielle Kriterien erlauben, die Neokom-Karbonatklasten mit den autochthonen Seichtwasser-Karbonaten des westlichen Abschnittes der Munella-Plattform, die mindestens bis in das obere Aptium reicht, in direkten Zusammenhang zu bringen. Eine heute vollständig erodierte Ober-Jura Karbonatplattform im Hangenden der Ophiolithdecken wird durch Komponentenanalyse rekonstruiert. Diese Ober-Jura-Karbonatplattform (Kurbnesh Karbonatplattform; nomen novum) war bis zum Valanginium vollständig erodiert und lässt sich nur durch die beschriebenen Klasten rekonstruieren. Sie wurde auf der Mirdita-Ophiolithzone abgelagert und versiegelte den Deckenstapel, der sich während der mittel-bis oberjurassischen Kimmeridischen Orogenese bildete. Deckenbau und Imbrikation sowie die Bildung des syntektonischen Wildflysches (der Mélange) fanden daher viel früher statt als bisher angenommen. Unsere Ergebnisse grenzen die Kimmeridische Orogenese, die von der Schließung des Neotethys-Ozeans gesteuert wurde, zeitlich ein, und zeigen sehr gute Korrelation mit dem Ost...

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Section: Slovenia and Croatiamentioning

confidence: 99%

The eroded Late Jurassic Kurbnesh carbonate platform in the Mirdita Ophiolite Zone of Albania and its bearing on the Jurassic orogeny of the Neotethys realm

et al. 2008

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“…Po fosilih, predvsem dazikladacejskih algah in koralah sklepamo, da predstavlja cordevolski dolomit nekdanje grebene, katere je kasneje intenzivno zajela dolomitizacija. Apnenci cordevolske starosti grade ve~ji del Mežakle in Pokljuke v Julijskih Alpah raMov{ & turn{ek, 1984;turn{ek & Buser, 1989) Brdo pri Vrhniki (raMov{, 1995(raMov{, , 2000. V dolomitu in apnencu so na vseh omenjenih obmo~jih med fosili najbolj pogoste skeletne alge (Diplopora annulata, Diplopora annulatissima, Gyroporella ladinica), ki so mestoma kamenotvorne (raMov{, , 1992dozet, 1979^ar, 2010).…”

Section: Karnijunclassified

“…Po fosilih, predvsem dazikladacejskih algah in koralah sklepamo, da predstavlja cordevolski dolomit nekdanje grebene, katere je kasneje intenzivno zajela dolomitizacija. Apnenci cordevolske starosti grade ve~ji del Mežakle in Pokljuke v Julijskih Alpah raMov{ & turn{ek, 1984;turn{ek & Buser, 1989) ter obsežne predele v Kamni{ko-Savinjskih Alpah (Krvavec, Velika planina, Menina -Pre- Mru, 1974Mru, , 2005raMov{ & šriBar, 1993;celarc 2004a;, v manj{ih krpah pa se pojavljajo tudi na Idrijskem, prostoru med Cerknim in Ljubljano ter v vzhodnih Posavskih gubah. Zaradi paleozakrasevanja in lokalnih emerzij (Buser, 1980b) Brdo pri Vrhniki (raMov{, 1995, 2000.…”

Section: Karnijunclassified

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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“…The Dachstein-type reef-rims around neighbouring platforms (Buser et al 1982;Turnšek & Buser 1991) also imply good water circulation (Iannace & Zamparelli 2002). The above mentioned data, as well as the long-term existence of the Slovenian Basin are in contrast to the shallower, more restricted intraplatform basins (see for example Cozzi & Podda 1998;Iannece & Zamparelli 2002;Tomašových 2004).…”

Section: Depositional Environmentmentioning

confidence: 97%

“…Several reefs are indeed known to have rimmed the Julian Carbonate Platform (Buser et al 1982;Turnšek & Buser 1991). Intraclasts, on the contrary, originate very close to the place of final deposition.…”

Section: Submicrofacies Mf 3-mix (Mixed Mudstone)mentioning

confidence: 99%

Microfacies analysis of the Upper Triassic (Norian) "Bača Dolomite": early evolution of the western Slovenian Basin (eastern Southern Alps, western Slovenia)

Gale¹

2010

Geologica Carpathica

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Abstract:The Slovenian Basin represents a Mesozoic deep-water sedimentary environment, situated on the southern Tethyan passive margin. Little is known about its earliest history, from the initial opening in the Carnian (probably Ladinian) to a marked deepening at the beginning of the Jurassic. The bulk of the sediment deposited during this period is represented by the Norian-Rhaetian "Bača Dolomite", which has, until now, been poorly investigated due to a latediagenetic dolomitization. The Mount Slatnik section (south-eastern Julian Alps, western Slovenia) is one of a few sections where the dolomitization was incomplete. Detailed analysis of this section allowed us to recognize eight microfacies (MF): MF 1 (calcilutite), MF 2 (pelagic bivalve-radiolarian floatstone/wackestone to rudstone/packstone), MF 3 (dolomitized mudstone) with sub-types MF 3-LamB and MF 3-LamD (laminated mudstone found in a breccia matrix and laminated mudstone found in thin-bedded dolomites, respectively) and MF 3-Mix (mixed mudstone), MF 4 (bioturbated radiolarian-spiculite wackestone), MF 5 (fine peloidal-bioclastic packstone), MF 6 (very fine peloidal packstone), MF 7 (bioclastic wackestone) and MF 8 (crystalline dolomite). The microfacies and facies associations indicate a carbonate slope apron depositional environment with hemipelagic sedimentation punctuated by depositions from turbidites and slumps. In addition to the sedimentary environment, two "retrogradation-progradation" cycles were recognized, each with a shift of the depositional setting from an inner apron to a basin plain environment.

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An Upper Jurassic Reef Complex From Slovenia, Yugoslavia

Cited by 37 publications

References 0 publications

The eroded Late Jurassic Kurbnesh carbonate platform in the Mirdita Ophiolite Zone of Albania and its bearing on the Jurassic orogeny of the Neotethys realm

The eroded Late Jurassic Kurbnesh carbonate platform in the Mirdita Ophiolite Zone of Albania and its bearing on the Jurassic orogeny of the Neotethys realm

Microfacies of Mesozoic Carbonate

Microfacies analysis of the Upper Triassic (Norian) "Bača Dolomite": early evolution of the western Slovenian Basin (eastern Southern Alps, western Slovenia)

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