Sedimentologia del sector occidental del abanico costerò de Sant Llorenf del Munt (Eoceno, cuenca de antepais surpirenaica)

Abstract

The Bartonian-Priabonian Sant Lloreng del Munt fan-delta complex is located at the SE margin of the South-Pyrenean foreland basin. During the deposition of this complex the basin margin was controlled by a series of sinistral strike-slip faults that under transpressive conditions developed some thrusting structures. The fan-delta complex consists of an alternation ofdetrital and carbonate facies. The detrital facies (more than the 9 0 % in volume of the com plex) includ e the deposits of four main facies belts: proximal alluvial fan (conglomerates), distal alluvial fan and fan-delta plain (conglomerates and red sandstones and mudstones), fan-delta front (sandstones and conglomerates) and fan-delta slope (bluegrey offshore marls and "turbiditic" sandstones and conglomerates). The carbonate facies are mainly represented by bioclastic shoals and reefs