Paleo-European crust of the Italian Western Alps: Geological history of the Argentera Massif and comparison with Mont Blanc-Aiguilles Rouges and Maures-Tanneron Massifs (original) (raw)
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Quaternary International, 2003
Several swath profiles, drainage morphometric parameters, slope and drainage density maps were obtained by DTM analysis of the Argentera Massif (Western Alps). The spatial distribution of the analysed parameters indicates that the central-southern sector is characterized by orographic and drainage characteristics very different from the rest of the Massif. Two main systems of NW-and WNW-trending faults, the Orgials Fault and Valletta Fault, bound this area. Both faults belong to large-scale fault zones: the dextral strike-slip Bersezio Fault and the south-facing Colle del Sabbione thrust. The orientations and kinematics of both faults indicate a late Alpine (Pliocene to recent) SW-verging thrusting coupled with a dextral strike-slip movement. The central-southern sector of the Massif corresponds to the hanging wall of a SW-verging late Alpine thrust zone, and underwent the highest post Pliocene tectonic uplift in the Argentera Massif. The uplift occurred in a transpressive setting with an N-S shortening direction, which is consistent with the post-Pliocene tectonics in the southern portion of the Western Alps. r
The Italian Alps: a journey across two centuries of Alpine geology
Journal of the Virtual Explorer, 2010
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Geology of the Colle di Tenda – Monte Marguareis area (Ligurian Alps, NW Italy)
Journal of Maps
The 1:25,000 geological map of the Colle di Tenda-Monte Marguareis area covers an area of about 130 km 2 in the Italian Ligurian Alps, between the Vermenagna and Tanaro valleys. It is a detailed geological map of a sector of the Ligurian Alps of renewed scientific interest, and represents the eastern continuation of a recently published geological map of the Entracque-Colle di Tenda area. In addition to the increased detail and scale, the more relevant new contents of this map are represented by: (1) a map of all the tectonic elements making up the Limone-Viozene Zone and the Refrey Unit, which represent the southeastern portion of a major regional transfer zone developed at the southern termination of the Western Alps arc; (2) the representation of km-scale Cretaceous palaeoescarpments previously overlooked or interpreted as Alpine faults; (3) a new interpretation of some dark shales with interbedded sandstones, which were previously mapped as Helminthoides Flysch tectonic remnants, as belonging to the Annot Sandstone unit, the uppermost term of the Alpine Foreland Basin succession; and (4) a map legend designed following the same criteria of the 1:250,000 Map of the Piemonte Region.