Hybrid event bed distribution in a mixed siliciclastic-calcareous turbidite succession: a cross-current perspective from the Bordighera Sandstone, Ligurian Alps, NW Italy

2021 ◽  
Vol 140 (2) ◽  
pp. 1-21
Author(s):  
Pierre Mueller ◽  
Marco Patacci ◽  
Andrea Di Giulio
Keyword(s):  
Current Perspective ◽  
Ligurian Alps ◽  
Nw Italy ◽  
Cross Current ◽  
Hybrid Event

Laterally accreted deposits in low efficiency turbidites associated with a structurally-induced topography (Oligocene Molare Group, Tertiary Piedmont Basin, NW Italy)

2021 ◽  
Vol 91 (7) ◽  
pp. 751-772
Author(s):  
Roberto Tinterri ◽  
Andrea Civa
Keyword(s):  
Small Volume ◽  
Alternative Interpretation ◽  
Meandering Channels ◽  
Stratigraphic Framework ◽  
Sediment Gravity Flow ◽  
Dense Flows ◽  
Low Efficiency ◽  
Nw Italy ◽  
Cross Current ◽  
Lateral Deflections

ABSTRACT The origin of laterally accreted deposits in ancient deep marine successions is often controversial. Indeed, not always do these features imply the occurrence of meanders or high-sinuosity turbidite channels, but they can be generated by other causes, such as sediment-gravity-flow dynamics controlled by the morphology of tectonically confined mini-basins. This work discusses laterally accreted deposits composed of sharp-based, normally graded beds in a very small tectonically controlled mini-basin. These beds, characterized by a well-defined asymmetrical cross-current facies tract, form well-developed lateral-accretion surfaces dipping in directions ranging between W and SW, and perpendicular to the paleocurrents directed towards the N. For this reason, these deposits have always been interpreted as point bars related to meandering channels. A new detailed stratigraphic framework and facies analysis have led to an alternative interpretation, namely that these deposits record lateral deflections of small volume, longitudinally segregated turbidite dense flows against a structurally controlled morphological high. This interpretation is also supported by a comparison to other tectonically controlled turbidite systems that are characterized by higher degrees of efficiency but show similar laterally accreted deposits and cross-current facies tracts.

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.

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

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
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