Abstract
ABSTRACTThe 1:10,000 geological map here presented extends over about 32 km2 around the Col de Braus pass in the Maritime Alps (SE France). This area has attracted the attention of geologists since the late eighteenth century due to superb exposures of the Jurassic–Cretaceous Provençal succession, and has become a classic geological locality continuously studied until the present day. In this area, Early Cretaceous synsedimentary tectonics is evidenced by important lateral thickness and facies variations. This sector is presently placed at the western termination of a large structural domain extending from the westernmost Ligurian Alps into the French–Italian Maritime Alps, thus representing a key-area for understanding the structural setting of this part of the Western Alps.
Highlights
Introduction and geological settingThe Col de Braus area, in the Nice inland (Maritime Alps, SE France), represents a key-sector for the geology of SE France, as confirmed by the long history of geological research that has been carried out over more than two centuries
It corresponds to the southeastern sector of the Alpine External Domain (Dauphinois Domain) that was part, during the Mesozoic, of the European passive margin of the Alpine Tethys
In the Early Jurassic, the European margin differentiated into a platform domain (Provençal) and a basinal domain (Dauphinois), as a result of extensional tectonics during the Alpine Tethys rifting (Dardeau, 1988)
Summary
The Col de Braus area, in the Nice inland (Maritime Alps, SE France), represents a key-sector for the geology of SE France, as confirmed by the long history of geological research that has been carried out over more than two centuries (see Chapter 2) It corresponds to the southeastern sector of the Alpine External Domain (Dauphinois Domain) that was part, during the Mesozoic, of the European passive margin of the Alpine Tethys. The Alpine Foreland Basin succession starts with laterally discontinuous continental to coastal deposits (Microcodium Formation, FaureMuret & Fallot, 1954), followed by the middle Eocene ramp Nummulitic Limestone, the hemipelagic upper Eocene Globigerina Marl and the upper Eocene– lower Oligocene Grès d’Annot turbidite succession (Ford, Lickhorish, & Kuznir, 1999; Sinclair, 1997). The sites with the newly recognized cold-water colonial corals at the top of the Nummulitic Limestone
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