In the Alpine-Mediterranean region, the continental redbeds and shallow-marine siliciclastics related to the early depositional phases of the Late Permian-Mesozoic continental rifting are referred to as the most common representative of the ‘‘Verrucano tectofacies’’. The Verrucano- type successions exposed in southern Tuscany are diachronous, spanning from Triassic to earliest Jurassic in age, and accumulated within the Tuscan domain, a paleogeographic region of continental crust that due to the opening of the Piedmont–Ligurian ocean formed part of the Adria passive-margin. They belong to the metamorphic Verrucano Group and the non-metamorphic Pseudoverrucano fm. Viewed overall, these Verrucano-type successions appear to manifest five episodes or pulses of an ongoing continental rifting. With the exception of the first episode that developed entirely within a terrestrial setting, each one is represented by basal Verrucano-type continental siliciclastics overlain by compositionally mixed marine deposits, which resulted from four diachronous, post-Middle Triassic transgressions. This suite of tectonic pulses produced the progressive westward widening (backstepping) of the Tuscan domain in the rifting south-Tuscany area.

Aldinucci, M., Gandin, A., & Sandrelli, F. (2008). The Mesozoic continental rifting in the Mediterranean area: insights from the Verrucano Tectonofacies of southern Tuscany (Northern Apennines, Italy). INTERNATIONAL JOURNAL OF EARTH SCIENCES, 97(6), 1247-1269 [10.1007/s00531-007-0208-9].

The Mesozoic continental rifting in the Mediterranean area: insights from the Verrucano Tectonofacies of southern Tuscany (Northern Apennines, Italy)

ALDINUCCI, M.;GANDIN, A.;SANDRELLI, F.
2008

Abstract

In the Alpine-Mediterranean region, the continental redbeds and shallow-marine siliciclastics related to the early depositional phases of the Late Permian-Mesozoic continental rifting are referred to as the most common representative of the ‘‘Verrucano tectofacies’’. The Verrucano- type successions exposed in southern Tuscany are diachronous, spanning from Triassic to earliest Jurassic in age, and accumulated within the Tuscan domain, a paleogeographic region of continental crust that due to the opening of the Piedmont–Ligurian ocean formed part of the Adria passive-margin. They belong to the metamorphic Verrucano Group and the non-metamorphic Pseudoverrucano fm. Viewed overall, these Verrucano-type successions appear to manifest five episodes or pulses of an ongoing continental rifting. With the exception of the first episode that developed entirely within a terrestrial setting, each one is represented by basal Verrucano-type continental siliciclastics overlain by compositionally mixed marine deposits, which resulted from four diachronous, post-Middle Triassic transgressions. This suite of tectonic pulses produced the progressive westward widening (backstepping) of the Tuscan domain in the rifting south-Tuscany area.
Aldinucci, M., Gandin, A., & Sandrelli, F. (2008). The Mesozoic continental rifting in the Mediterranean area: insights from the Verrucano Tectonofacies of southern Tuscany (Northern Apennines, Italy). INTERNATIONAL JOURNAL OF EARTH SCIENCES, 97(6), 1247-1269 [10.1007/s00531-007-0208-9].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/23191
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