Geological map and stratigraphic evolution of the central sector of the Carnic Alps (Austria-Italy)

Pondrelli, M.; Corradini, Carlo; Spalletta, Claudia; Simonetto, L.; Perri, Maria Cristina; Corriga, Maria Giovanna; Venturini, Corrado; Schönlaub, Hans Peter

doi:10.3301/ijg.2020.16

Cited by 9 publications

(16 citation statements)

References 30 publications

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“…Pillola et al, 1998) and becomes much more widespread during the Devonian and the early Carboniferous (e.g. Pondrelli et al, 2020), in response to the migration of the Gondwana plate to northern, more equatorial, palaeo-positions (Franke et al, 2020). As a working hypothesis, it is therefore assumed that the marbles from the Dora-Maira Massif may derive either from Early Cambrian or Devonian limestones.…”

Section: Palaeozoic Sedimentation and Magmatismmentioning

confidence: 99%

A window into an older orogenic cycle: P–T conditions and timing of the pre‐Alpine history of the Dora‐Maira Massif (Western Alps)

Nosenzo

Manzotti

Poujol

et al. 2022

Journal Metamorphic Geology

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Deciphering the pre-orogenic evolution of subducted continental basement is challenging due to pervasive reworking of crust during subduction and exhumation. Survival of such polycyclic basement may occur locally in low strain domains bounded by intensely overprinted rocks. The Palaeozoic history of basement involved in Alpine continental subduction is investigated in the northern Dora-Maira Massif where a kilometre-scale domain of low strain preserves a pre-Alpine amphibolite-facies foliation in garnet-biotite orthogneiss and garnet-staurolite micaschist. By contrast, a first generation garnet is the only pre-Alpine relict in pervasively reworked domains surrounding the lowstrain domain. Thermodynamic modelling based on garnet isopleths in micaschist constrains the pre-Alpine pressure-temperature (P-T) evolution from 4 to 5 kbar and $500 C to 6-7 kbar and $650 C, which is consistent with Barrovian metamorphism up to the staurolite zone. In this micaschist, monazite included in garnet rims provide an age of 324 AE 6 Ma (95% confidence interval; c.i.). On the basis of textural and chemical data, this is interpreted as recording peak Barrovian metamorphic conditions. Low Th/U metamorphic zircon overgrowths and crystals yield an age of 304 AE 2 Ma (95% confidence interval). On the basis of the trace element concentrations and rare earth element (REE) patterns measured in garnet and metamorphic zircon, the latter is tentatively interpreted as having grown during early exhumation or cooling, involving garnet consumption and fluid infiltration. The reconstructed Variscan Barrovian metamorphism of the northern Dora-Maira basement is consistent with that documented in the External Crystalline Massifs and in the Austroalpine domain of the Alps. The Palaeozoic basement of the Dora-Maira Massif likely represents upper crustal material, later involved in Alpine continental subduction under high-to ultra-high-pressure conditions.

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Section: Palaeozoic Sedimentation and Magmatismmentioning

confidence: 99%

A window into an older orogenic cycle: P–T conditions and timing of the pre‐Alpine history of the Dora‐Maira Massif (Western Alps)

Nosenzo

Manzotti

Poujol

et al. 2022

Journal Metamorphic Geology

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“…30a) and medium dark grey, medium to thick bedded, poorly sorted coral-and stromatoporoidbearing rudstone (more rarely floatstone) and grainston matrix (Figs. 30a, b) (Pondrelli et al, 2020). In these latter facies sometimes rudstone shows a fining upward trend up to grainstone.…”

Section: Stop 23 -Panoramic View On Mt Polinikmentioning

confidence: 95%

“…); the thickness of these units decreases from west to east in the Central sector of the Carnic Alps (Fig. 8), according to the distance from the main source area (Pondrelli et al, 2020). Between the fore-reef and the deeper part of the basin the gravity-driven deposits alternated with pelagic limestones and black shales (Hoher Trieb Fm.).…”

Section: The Pre-variscan Sequencementioning

confidence: 99%

“…and its transition to the Cellon Fm. which occur in the uppermost part of the Eifelian (Pondrelli et al, 2020). The Cellon Fm.…”

Section: Stop 23 -Panoramic View On Mt Polinikmentioning

confidence: 99%

“…continued up to the top of the stage (M. hercynicus graptolite Zone). Eustatic variations at the Lochkovian/Pragian boundary resulted in an unconformity between the Rauchkofel and the Kellerwand formations (Pondrelli et al, 2020). Starting from the Pragian, the differences within the sedimentary basin increased: "the Devonian Period is characterized by abundant shelly fossils, varying carbonate thicknesses, reef development and interfingering facies ranging from near-shore sediments to carbonate buildups, lagoonal and slope deposits, condensed pelagic cephalopod limestones to deep oceanic offshore shales" (Schönlaub and Histon, 1999, p. 15).…”

Section: The Pre-variscan Sequencementioning

confidence: 99%

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The pre-Variscan sequence of the Carnic Alps (Italy-Austria)

Corradini¹,

Pondrelli²

2021

GFT

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The Geological Survey of Italy, the Società Geologica Italiana and the Editorial group are not responsible for the ideas, opinions and contents of the guides published; the Authors of each paper are responsible for the ideas, opinions and contents published. Il Servizio Geologico d'Italia, la Società Geologica Italiana e il Gruppo editoriale non sono responsabili delle opinioni espresse e delle affermazioni pubblicate nella guida; l'Autore/i è/sono il/i solo/i responsabile/i. http://gftm.socgeol.it/

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Pre-Alpine tectonic evolution of the Eastern Alps: From Prototethys to Paleotethys

Neubauer

Liu

Dong

et al. 2022

Earth-Science Reviews

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Geological map and stratigraphic evolution of the central sector of the Carnic Alps (Austria-Italy)

Abstract: Monica Pondrelli (1), carlo corradini (2), claudia SPalletta (3), luca SiMonetto (4), Maria criStina Perri (3), Maria G. corriGa (5), corrado Venturini (3) & HanS Peter ScHönlaub (6)

Cited by 9 publications

References 30 publications

A window into an older orogenic cycle: P–T conditions and timing of the pre‐Alpine history of the Dora‐Maira Massif (Western Alps)

A window into an older orogenic cycle: P–T conditions and timing of the pre‐Alpine history of the Dora‐Maira Massif (Western Alps)

The pre-Variscan sequence of the Carnic Alps (Italy-Austria)

Pre-Alpine tectonic evolution of the Eastern Alps: From Prototethys to Paleotethys

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