Illite (KI) and chlorite (AI) "crystallinity" indices as a constraint for the evolution of the External Briançonnais Front in Western Ligurian Alps (NW Italy)

2014 ◽  
Vol 133 (3) ◽  
pp. 445-454 ◽  
Author(s):  
Fabrizio Piana ◽  
Stefano Battaglia ◽  
Carlo Bertok ◽  
Anna d'atri ◽  
Alessandra Ellero ◽  
...  
Keyword(s):  
Ligurian Alps ◽  
Nw Italy

scholarly journals Middle-Late Jurassic syndepositional tectonics recorded in the Ligurian Briançonnais succession (Marguareis–Mongioie area, Ligurian Alps, NW Italy)

2011 ◽  
Vol 104 (2) ◽  
pp. 237-255 ◽  
Author(s):  
Carlo Bertok ◽  
Luca Martire ◽  
Elena Perotti ◽  
Anna d’Atri ◽  
Fabrizio Piana
Keyword(s):  
Late Jurassic ◽  
Ligurian Alps ◽  
Nw Italy

scholarly journals Geology of the Colle di Tenda – Monte Marguareis area (Ligurian Alps, NW Italy)

2018 ◽  
Vol 14 (2) ◽  
pp. 542-551 ◽  
Author(s):  
Carlo Bertok ◽  
Alessia Musso ◽  
Anna d’Atri ◽  
Luca Martire ◽  
Fabrizio Piana
Keyword(s):  
Ligurian Alps ◽  
Nw Italy

scholarly journals A multidisciplinary investigation of deep-seated landslide reactivation triggered by an extreme rainfall event: a case study of the Monesi di Mendatica landslide, Ligurian Alps

Landslides ◽  
2021 ◽  
Author(s):  
Davide Notti ◽  
Aleksandra Wrzesniak ◽  
Niccolò Dematteis ◽  
Piernicola Lollino ◽  
Nunzio Luciano Fazio ◽  
...  
Keyword(s):  
Multidisciplinary Approach ◽  
Extreme Rainfall ◽  
Rainfall Event ◽  
Image Correlation ◽  
Extreme Rainfall Event ◽  
The Road ◽  
Ligurian Alps ◽  
Nw Italy ◽  
Landslides And Debris Flows ◽  
The Village

AbstractIn November 2016, an extreme rainfall event affected the Ligurian Alps (NW Italy). Consequently, several landslides and debris flows occurred in the upper Tanarello stream basin. In particular, the village of Monesi di Mendatica was severely damaged by two landslide phenomena: the activation of a rotational landslide, which caused the total collapse of two buildings and part of the main road, and the reactivation of a deep-seated planar massive and a complex landslide, which widely fractured most of the buildings in the village. The latter phenomenon was mostly unknown and had never been monitored prior to the 2016 event. Due to the extensive damage, the village of Monesi was completely evacuated, and the road connecting a ski resort area in the upper part of the valley was closed. Furthermore, a potentially dangerous situation related to the eventual progressive evolution of this landslide that could cause a temporary occlusion of the Tanarello stream still remains. For this reason, we defined the landslide behaviour, triggering conditions and chronological evolution leading to the 2016 event using a multidisciplinary approach. This approach consisted of field surveys, satellite DInSAR time series analyses, digital image correlation techniques, rainfall records analyses, postevent monitoring campaigns and subsurface investigation data analyses, and numerical modelling. This multidisciplinary approach enhanced our understanding of this landslide, which is fundamental to better comprehend its behaviour and possible evolution.

Provenance of Oligocene synorogenic sediments of the Ligurian Alps (NW Italy): inferences on belt age and cooling history

2003 ◽  
Vol 92 (5) ◽  
pp. 758-778 ◽  
Author(s):  
Chiara Barbieri ◽  
Barbara Carrapa ◽  
Andrea Di Giulio ◽  
Jan Wijbrans ◽  
Glen R. Murrell
Keyword(s):  
Cooling History ◽  
Ligurian Alps ◽  
Nw Italy

scholarly journals Unexpected thermal history of a syn-collisional basin revealed by geo- and thermochronology: the case of the Tertiary Piedmont Basin (Western Alps, Italy)

2020 ◽  
Author(s):  
Chiara Amadori ◽  
Antonio Langone ◽  
Mattina Marini ◽  
Reguzzi Simone ◽  
Barbara Carrapa ◽  
...  
Keyword(s):  
Thermal History ◽  
Middle Eocene ◽  
Western Alps ◽  
Tectonic Deformation ◽  
Magmatic Zircon ◽  
Time Data ◽  
Sedimentary Evolution ◽  
Ligurian Alps ◽  
History Of ◽  
Nw Italy

<p>The Tertiary Piedmont Basin (TPB) in NW Italy represents an episutural basin developed since the Late Eocene in the retrobelt of the Western Alps and in the foreland of the Northern Apennine. During Oligo-Miocene time, up to 3 km-thick clastic deposits filled the basin recording the tectonics associated with the shift from the Alpine collisional thickening and the progressive NE-migration of the Apennine. The continental thickening was also accompanied by the opening of the Liguro-Provençal Basin and the drift of the Corsica-Sardinia block. Because of this key-position, the tectono-sedimentary and thermochronological history of the TPB has been the object of extensive investigations (Maino et al., 2013 and reference therein). However, several questions regarding its burial-exhumation history are still open. In order to define the thermal history of the source-sink system, we combined literature data with new detrital apatite fission-track analyses and zircon U-Pb dating from Upper Priabonian to Lower Miocene syn-tectonic deposits. Results from AFT analysis show: i) a single reset population at 24.8 ± 1.2 Ma (Late Chattian) in the lowermost Late Priabonian sample; ii) partially annealed apatite grains from Early Rupelian sample; iii) unannealed Late Rupelian-Miocene samples with AFT age populations spanning from Late Cretaceous to Late Oligocene in time. Data from the Ligurian Alps crystalline massifs report similar AFT cooling ages between 22.9 ± 5.3 - 24.0 ± 1.4 Ma. This, combined with our data, shows that the bottom of the TPB sequence experienced ~110 °C heating and subsequent cooling together with its nearby margin. The heating experienced by the basin combined with reconstructed sedimentary thickness (before the exhumation/cooling event) of ca. < 3 km, implies an elevated geothermal gradient of about 60 °C/Km, which is anomalous for a thickened orogenic crust. Furthermore, one sample from Upper Oligocene sedimentary rocks contains an AFT detrital population age (33.6 ± 2 Ma) consistent with a youngest U-Pb age peak of 33.6 Ma from co-magmatic zircon grains, which likely reflects the age of volcanites today buried under the Po Plain (Di Giulio et al., 2001). Detrital zircon U-Pb ages show two main populations at ca. 290 and ca. 460 Ma, which are expected products of a Variscan source now exposed in the Ligurian Alps and Southern Alps. Our new geo-thermochronological data overall suggests a distributed Oligocene thermal signal, the origin of which is discussed. Possible explanations are: 1) a > 3 km of focused erosion associated with tectonic deformation occurred in the TPB and nearby margin and/or 2) an anomalously high heat flow event driven by asthenospheric rise as a consequence of the Liguro-Provençal rifting.</p><p>Maino M., Decarlis A., Felletti F., Seno S. (2013) Tectono-sedimentary evolution of the Tertiary Piedmont Basin (NW Italy) within the Oligo–Miocene central Mediterranean geodynamics. Tectonics, 32, 593–619.</p><p>Di Giulio, A., Carrapa B., Fantoni R., Gorla L., Valdisturlo L. (2001) Middle Eocene to Early Miocene sedimentary evolution of the western segment of the South Alpine foredeep (Italy). Int. J. Earth Sci., 90, 534-548.</p>

scholarly journals A new species of Typhonia from the Ligurian Alps (Lepidoptera: Psychidae)

2017 ◽  
pp. 137-144
Author(s):  
Edgardo Bertaccini ◽  
Alberto Zilli
Keyword(s):  
New Species ◽  
Dna Barcode ◽  
Ligurian Alps ◽  
Nw Italy ◽  
A New Species

Typhonia lailae sp. n. is described on basis of samples from the Ligurian Alps (NW Italy). The new species is a member of the Typhonia ciliaris-melana complex and though it seems closest to T. melana (= beatricis) by the thick antennae of the female, DNA-barcode analysis places it nearest to T. ciliaris.

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