Pleistocene Carbonate Lacustrine Deposits: Sulmona Basin (Central Apennines, Italy)

• Autores: Gian Paolo Cavinato, E. Miccadei
• Localización: Lake basins through space and time / coord. por Elizabeth H. Gierlowski-Kordesch, K. Kelts, 2000, ISBN 0891810528, págs. 517-526
• Idioma: inglés
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• Resumen

  • Pleistocene carbonate lacustrine deposits are locatedin the Sulmona Basin, which is 150 km to the northnortheast of Rome (eastern part of the Apennines chain,Abruzzi area, central Italy, see Figure 1). The Apenninesis a collisional fold and thrust belt developed along the Burdigalian trough since early Pliocene along the Adriaticensialic microplate in response to west dipping subduction(Royden et al., 1987; Cipollari and Cosentino,1996). The central Apennines chain consists of a Mesozoic-Tertiary stack of northeastly verging folds and south westerly-dipping thrust systems, juxtaposed with ramp and basinal sequences of the same age as well aspiggy-back flysch basins of Messinian to early Plioceneage (Figure 1) (Bigi et al., 1992; Ghisetti et al., 1992;D'Andrea et al., 1992; Patacca et al., 1992; Cipollari and Cosentino, 1996).From the late Pliocene to Quaternary, the compressionaltectonic setting of the Apennine chain was progressively modified and dissected, from theTyrrhenian margin to the Adriatic Sea, by extensionaland transtensional tectonic events. These tectonicevents produced northwest-southeast and east-westhigh-angle normal, oblique, and transfer fault systems,southwest to south dipping, mainly developed alongthrust ramps. Along the intersections of these main fault systems, several northwest-southeast intramontanegraben and half-graben basins of different shapesand widths were formed (i.e., Fucino, L'Aquila, SulmonaBasins, Figure 1) (Patacca et al., 1992; Cavinatoet al., 1994). The sedimentary evolution of these basinshas been controlled since the late Pliocene by tectonicactivity along their margins, as testified by presentdaycrustal seismicity (Vittori et al., 1995). A generaloverview of the sedimentary infill of the basins shows517the presence of basal coarse-grained deposits (alluvial and alluvial fan deposits) overlain by