Deep-water sedimentation in the Alpine Foreland Basin of SE France: New perspectives on the Grès d’Annot and related systems—an introduction

Interpreting syndepositional sediment remobilization and deformation beneath submarine gravity flows; a kinematic boundary layer approach

“…The succession consists of interbedded turbidite sandstones and mudstones that constitute the down-system equivalent of the extensively studied Annot system of SE France (Joseph & Lomas 2004). The studied outcrop (Fig.…”

Structural and sedimentary records of the Oligocene revolution in the Western Alpine arc

“…Here, the evidence for Paleogene syndepositional activity of the fold consist of (1) southeastward-tilt of the hemipelagic Globigerina marls, which are onlapped by the lower part of the Grès d'Annot formation (upper fig. 8, left;Kerckhove, 1974) and by a marker layer of conglomeratic debris-flow usually occurring ~300m above the base of the formation (Jean, 1985;Joseph & Lomas, 2004), (2) northwestward erosional truncation of the Grès d'Annot fm., from >600m thick to zero in about 5 km across the Bonnette pass ( fig. 8, 9).…”

“…This event was linked with exhumation of the Pelvoux basement and folding of the Dauphiné and Subalpine Mesozoic cover, and it is assigned to the Iberian plate motion (Gidon, 1979;Ford, 1996). Later on, the subsidence due to flexural bending of the European foreland underneath the propagating Alpine wedge (Sinclair, 1997) led to the deposition of a transgressive sequence including Middle to Late Eocene platform limestones (Pairis, 1988), hemipelagic Globigerina marls and finally thick turbiditic sandstones/shales alternations dated latest Eocene-early Oligocene (Ravenne et al, 1987;Joseph & Lomas, 2004). The Paleogene sediments, which are widespread in the southern part of the Western Alps, are capped by a characteristic formation containing olistostrome over much of the Western Alpine arc (« Schistes à blocs » ; Kerckhove, 1964) and by the gravity-driven emplacement of the first "exotic" nappes in the basinal setting (Kerckhove, 1969;Campredon, 1977).…”

Field expressions of the transformation of debris flows into turbidity currents, with examples from the Polish Carpathians and the French Maritime Alps

“…2) were deposited during the Eocene-Oligocene in the southern part of the Alpine Foreland Basin (Amy et al, 2007;Joseph and Lomas, 2004;Ravenne et al, 1987). The foreland basin in this area had an irregular, structurally controlled, sea-floor morphology due to Alpine-related tectonics (Apps et al, 2004;Elliott et al, 1985).…”