Middle Triassic carbonate-platform break-up and formation of small-scale half-grabens (Julian and Kamnik–Savinja Alps, Slovenia)

Celarc, Bogomir; Goričan, Špela; Kolar‐Jurkovšek, Tea

doi:10.1007/s10347-012-0326-0

Cited by 35 publications

(43 citation statements)

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“…This contact has been subsequently affected by the Miocene extension and the Pliocene‐Quaternary inversion, causing the earlier Oligocene‐earliest Miocene nappe contact to be crosscut and tilted along the Medvednica Mountains extensional dome. This nappe contact is also compatible with a nappe contact observed in western Slovenia, where the Triassic‐Cretaceous deep‐water facies of the Mid‐Slovenian trough of the Tolmin nappe is overthrusted by the Triassic shallow‐water facies (including Upper Triassic Dachstein) of the Julian nappe during the Oligocene [e.g., Celarc et al , ; Goričan et al , , , ]. In contrast, the deep‐water Tolmin nappe has no record of a possible ophiolitic mélange such as observed in the footwall of the Žumberak nappe (Figure ).…”

Section: Discussionsupporting

confidence: 70%

The tectonic evolution of a critical segment of the Dinarides‐Alps connection: Kinematic and geochronological inferences from the Medvednica Mountains, NE Croatia

et al. 2015

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The transition zone between the Alps and Dinarides is a key area to investigate kinematic interactions of neighboring orogens with different subduction polarities. A study combining field kinematic and sedimentary data, microstructural observations, thermochronological data (Rb‐Sr and fission track), and regional structures in the area of Medvednica Mountains has revealed a complex polyphase tectonic evolution. We document two novel stages of extensional exhumation. The first stage of extension took place along a Late Cretaceous detachment following the late Early Cretaceous nappe stacking, burial, and greenschist facies metamorphism. Two other shortening events that occurred during the latest Cretaceous‐Oligocene were followed by a second event of extensional exhumation, characterized by asymmetric top‐NE extension during the Miocene. Top‐NW thrusting took place subsequently during the Pliocene inversion of the Pannonian Basin. The Cretaceous nappe burial, Late Cretaceous extension, and the Oligocene(‐Earliest Miocene) contraction are events driven by the Alps evolution. In contrast, the latest Cretaceous‐Eocene deformation reflects phases of Dinaridic contraction. Furthermore, the Miocene extension and subsequent inversion display kinematics similar with observations elsewhere in the Dinarides and Eastern Alps. All these processes demonstrate that the Medvednica Mountains were affected by Alpine phases of deformations to a much higher degree than previously thought. Similarly with what has been observed in other areas of contractional polarity changes, such as the Mediterranean, Black Sea, or New Guinea systems, the respective tectonic events are triggered by rheological weak zones which are critical for localizing the deformation created by both orogens.

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Section: Discussionsupporting

confidence: 70%

The tectonic evolution of a critical segment of the Dinarides‐Alps connection: Kinematic and geochronological inferences from the Medvednica Mountains, NE Croatia

et al. 2015

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“…During the rifting phase in the middle Triassic, this platform was dissected into numerous small platforms bounded by relatively shallow basins, most of which were completely infilled in the early Late Triassic time (winterer & Bosellini, 1981;DoGlioni, 1987;Buser, 1989;Bertotti et al, 1993;oGorelec & rothe, 1993). In the Robanov kot valley, Lower Triassic to lowermost Upper Triassic rocks crop out (celarc, 2004a(celarc, , celarc et al, 2013. The succession commence with a deposition of the Lower Triassic marls, and sandstones intercalated with of oolitic limestones and dolostone beds (Werfen Formation) continues with a deposition of Anisian bedded and massive dolostone.…”

Section: Geological Settingmentioning

confidence: 99%

“…Based on stratigraphic position, Celarc et al (2013) assigned the Strelovec Formation ranging from Pelsonian to Illyrian. Unfortunately, during our study, no age-relevant fossils were found in the Strelovec Formation.…”

Section: Age Of Strelovec Formationmentioning

confidence: 99%

“…It was first defined by celarc (2004a) and later investigated due to the rich macrofossil biota (hitij et al 2010; hitij 2012; žalohar & hitij 2013). However, compared to younger Triassic rocks (celarc, 2004a, 2004bcelarc & Goričan, 2007;celarc & Kolar jurKovšeK, 2008;celarc et al, 2013, 2014rožič 2008, rožič et al, 2009Gale, 2010Gale, , 2012Gale et al, 2013Gale et al, , 2014Gale et al, , 2015 it still remained insufficiently investigated.…”

Section: Introductionmentioning

confidence: 99%

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Anisian Strelovec Formation in the Robanov kot, Savinja Alps (Northern Slovenia)

Miklavc¹,

Celarc²,

Šmuc³

2016

Geologija

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A detailed sedimentological features of the Slatinski plaz section with a transition from the deep-water Anisian (Illyrian) Strelovec Formation to the Ladinian shallow-water Contrin Formation have been presented. The Strelovec Formation is divided into five different lithostratigraphic units that are characterised by dark hemipelagic and pelagic thin-bedded limestones and dolomitic mudstones that are frequently intercalated with deposits of gravitymass flows, slump and slide to fine-grained low-density turbidity origin. The Strelovec Formation was deposited in a hydrodynamically quiet, pelagic deeper-water anoxic environment, most probably on a gentle platform slope. In the upper part of the formation, the presence of olistolith blocks of shallow-water limestones indicates the closing of the prograding shallow-water platform wedge. Massive dolostones of Unit 6 mark the complete filling of the basin and the beginning of the shallow-water sedimentation of the Contrin Formation in the Early Ladinian. Izvle~ekV članku predstavljamo detajlni sedimentološki profil Slatinski plaz, v katerem lahko opazujemo prehod iz anizijske (ilirske) globljevodne Strelovške formacije v ladinijsko plitvomorsko Contrinsko formacijo. Strelovško formacijo smo razdelili na pet litostratigrafskih enot, za katere je značilno menjavanje temnih hemipelagičnih tankoplastnatih apnencev in dolomitov (mudstone), med katerimi so pogosti sedimenti gravitacijskih tokov (od zdrsov do zdrobnozrnatih turbiditov). Strelovška formacija se je odlagala v hidrodinamsko mirnem, pelagičnem, globljevodnem anoksičnem okolju, najverjetneje na blagem pobočju. V zgornjem delu formacije se pojavijo olistolitni bloki plitvovodnih apnencev, ki nakazujejo približevanje progradacijskega klina napredujoče platforme. Šesta litostratigrafska enota vsebuje plivovodne kamnine zgodnjeladinijske Contrinske formacije, ki kažejo, da se je globljevodni bazen v tem času že popolnoma zasul. GEOLOGIJA 59/1, 23-34, Ljubljana 2016 http://dx

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“…1), which together with the westerly lying Julian Alps and the northerly lying Southern Karavanke Mountains form the eastern part of the Southern Alps (PlaCer, 1999(PlaCer, , 2008vrabeC & FOdOr, 2006, CelarC et al, 2013. In the Late Triassic, this area was located on the passive margin of the Neotethys Ocean (HaaS et al, 1995;SCHmid et al, 2008).…”

Section: Geological Settingmentioning

confidence: 99%

New data on the progradation of the Dachstein carbonate platform (Kamnik-Savinja Alps, Slovenia)

Celarc¹,

Gale²,

Kolar‐Jurkovšek³

2014

Geologija

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Upper Triassic basin-platform succession in the Kamnik-Savinja Alps (N-central Slovenia) is similar to the succession known from the Julian Alps (Martuljek Mountain Group). It was part of the same Late Triassic depositional edifice, with the progradation of the Dachstein Platform in the SW-NE direction (recent orientation) from Julian Alps toward the Kamnik-Savinja Alps. Tectonic blocks with the same/similar stratigraphic record, were displaced as a consequence of the Alpine and later tectonic displacements. In the Kamnik-Savinja Alps, the upper part of the Martuljek platy limestone was dated with the conodonts as Late Carnian -Early Norian in the Mt. Ko~na. In the Mt. Skuta area, Limestone with chert is positioned above Martuljek platy limestone and under the Dachstein carbonate platform. Uppermost part of the Limestone with chert is Late Norian. Mutual vertical and lateral relationship, age of the lithological units, especially upper part of the deeper-water limestone, points to the progradation of the Dachstein carbonate platform in the Early Norian and possible aggradation in the part of the Middle and in the Late Norian. Izvle~ekZgornjetriasno bazensko -platformno zaporedje v Kamni{ko -Savinjskih Alpah (S Slovenija) je zelo podobno zaporedju v Julijskih Alpah (Martuljkova gorska skupina). V mlaj{em triasu je tvorilo enoten sedimentacijski prostor s progradacijo dachsteinske platforme v smeri JZ-SV (dana{nja orientacija) iz Julijskih Alp v Kamni{ko-Savinjske Alpe. Bloki z istim/podobnim stratigrafskim zapisom so bili kasneje zaradi alpske in mlaj{e tektonike premaknjeni v dana{nji položaj. V Kamni{ko-Savinjskih Alpah je bil zgornji del Martulj{kih apnencev v Ko~ni s konodonti datiran v mlaj{i karnij -starej{i norij. Na obmo~ju Skute se nad Martulj{kimi apnenci in pod dachsteinsko platformo pojavi {e zaporedje apnencev z roženci, katerih vrhnji del je datiran v mlaj{i norij. Medsebojni vertikalni in lateralni odnos, ter starost litolo{kih ~lenov, predvsem zgornjega dela globljevodnih apnencev, kaže na progradacijo dachsteinske karbonatne platforme v starej{em noriju, ter možno agradacijo v delu srednjega in v mlaj{em noriju.

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Middle Triassic carbonate-platform break-up and formation of small-scale half-grabens (Julian and Kamnik–Savinja Alps, Slovenia)

Cited by 35 publications

References 27 publications

The tectonic evolution of a critical segment of the Dinarides‐Alps connection: Kinematic and geochronological inferences from the Medvednica Mountains, NE Croatia

The tectonic evolution of a critical segment of the Dinarides‐Alps connection: Kinematic and geochronological inferences from the Medvednica Mountains, NE Croatia

Anisian Strelovec Formation in the Robanov kot, Savinja Alps (Northern Slovenia)

New data on the progradation of the Dachstein carbonate platform (Kamnik-Savinja Alps, Slovenia)

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