scholarly journals The start-up of the Dolomia Principale/Hauptdolomit carbonate platform (Upper Triassic) in the eastern Southern Alps

Sedimentology ◽  
2017 ◽  
Vol 65 (4) ◽  
pp. 1097-1131 ◽  
Author(s):  
Marcello Caggiati ◽  
Piero Gianolla ◽  
Anna Breda ◽  
Bogomir Celarc ◽  
Nereo Preto
Keyword(s):  
Carbonate Platform ◽  
Southern Alps ◽  
Upper Triassic ◽  
Start Up ◽  
Dolomia Principale

scholarly journals Sedimentary record of subsidence pulse at the Triassic/Jurassic boundary interval in the Slovenian Basin (eastern Southern Alps)

2017 ◽  
Vol 68 (6) ◽  
pp. 543-561 ◽  
Author(s):  
Boštjan Rožič ◽  
Tea Kolar Jurkovšek ◽  
Petra Žvab Rožič ◽  
Luka Gale
Keyword(s):  
Environmental Changes ◽  
Carbonate Platform ◽  
Southern Alps ◽  
Upper Triassic ◽  
Early Jurassic ◽  
Platform Margin ◽  
Basin Floor ◽  
Micritic Limestone ◽  
Slovenian Basin ◽  
Basin Area

AbstractIn the Alpine Realm the Early Jurassic is characterized by the disintegration and partial drowning of vast platform areas. In the eastern part of the Southern Alps (present-day NW Slovenia), the Julian Carbonate Platform and the adjacent, E-W extending Slovenian Basin underwent partial disintegration, drowning and deepening from the Pliensbachian on, whereas only nominal environmental changes developed on the large Dinaric (Friuli, Adriatic) Carbonate Platform to the south (structurally part of the Dinarides). These events, however, were preceded by an earlier - and as yet undocumented extensional event - that took place near the Triassic/Jurassic boundary. This paper provides evidence of an accelerated subsidence from four selected areas within the Slovenian Basin, which show a trend of eastwardly-decreasing deformation. In the westernmost (Mrzli vrh) section - the Upper Triassic platform-margin - massive dolomite is overlain by the earliest Jurassic toe-of-slope carbonate resediments and further, by basin-plain micritic limestone. Further east (Perbla and Liščak sections) the Triassic-Jurassic transition interval is marked by an increase in resedimented carbonates. We relate this to the increasing inclination and segmentation of the slope and adjacent basin floor. The easternmost (Mt. Porezen) area shows a rather monotonous, latest Triassic-Early Jurassic basinal sedimentation. However, changes in the thickness of the Hettangian-Pliensbachian Krikov Formation point to a tilting of tectonic blocks within the basin area. Lateral facies changes at the base of the formation indicate that the tilting occurred at and/or shortly after the Triassic/Jurassic boundary

scholarly journals Paleogeographic significance of Upper Triassic basinal succession of the Tamar Valley, northern Julian Alps (Slovenia)

2015 ◽  
Vol 66 (4) ◽  
pp. 269-283 ◽  
Author(s):  
Luka Gale ◽  
Bogomir Celarc ◽  
Marcello Caggiati ◽  
Tea Kolar-Jurkovšek ◽  
Bogdan Jurkovšek ◽  
...  
Keyword(s):  
Shallow Water ◽  
Southern Alps ◽  
Upper Triassic ◽  
Santo Stefano ◽  
Dolomia Principale ◽  
Julian Alps ◽  
Shallow Subtidal ◽  
Platform Carbonates ◽  
Slovenian Basin ◽  
Marly Limestone

AbstractThe Julian Alps (western Slovenia) structurally belong to the eastern Southern Alps. The Upper Triassic succession mostly consists of shallow water platform carbonates of the Dolomia Principale-Dachstein Limestone system and a deep water succession of the Slovenian Basin outcropping in the southern foothills of the Julian Alps. In addition to the Slovenian Basin, a few other intraplatform basins were present, but they remain poorly researched and virtually ignored in the existing paleogeographic reconstructions of the eastern Southern Alps. Herein, we describe a deepening-upward succession from the Tamar Valley (north-western Slovenia), belonging to the Upper Triassic Tarvisio Basin. The lower, Julian-Tuvalian part of the section comprises peritidal to shallow subtidal carbonates (Conzen Dolomite and Portella Dolomite), and an intermediate carbonate-siliciclastic unit, reflecting increased terrigenous input and storm-influenced deposition (Julian-lowermost Tuvalian shallow-water marlstone and marly limestone of the Tor Formation). Above the drowning unconformity at the top of the Portella Dolomite, Tuvalian well-bedded dolomite with claystone intercalations follows (Carnitza Formation). The latter gradually passes into the uppermost Tuvalian–lowermost Rhaetian bedded dolomite with chert and slump breccias, deposited on a slope and/or at the toe-of-slope (Bača Dolomite). Finally, basinal thin-bedded bituminous limestone and marlstone of Rhaetian age follow (Frauenkogel Formation). The upper part of the Frauenkogel Formation contains meter-scale platform-derived limestone blocks, which are signs of platform progradation. The Tarvisio Basin may have extended as far as the present Santo Stefano di Cadore area, representing a notable paleogeographic unit at the western Neotethys margin.

Upper Triassic carbonate-platform facies, Timor-Leste: Foraminiferal indices and regional tectonostratigraphic association

2021 ◽  
pp. 110362
Author(s):  
David W. Haig ◽  
Sylvain Rigaud ◽  
Eujay McCartain ◽  
Rossana Martini ◽  
Isaias Santos Barros ◽  
...  
Keyword(s):  
Carbonate Platform ◽  
Upper Triassic ◽  
Timor Leste

Large-scale progradation, demise and rebirth of a high-relief carbonate platform (Triassic, Lombardy Southern Alps, Italy)

2011 ◽  
Vol 239 (1-2) ◽  
pp. 48-63 ◽  
Author(s):  
Fabrizio Berra ◽  
Flavio Jadoul ◽  
Marco Binda ◽  
Alessandro Lanfranchi
Keyword(s):  
Large Scale ◽  
Carbonate Platform ◽  
Southern Alps
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