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Book Chapter

Filling and cannibalization of a foredeep: the Bradanic Trough, Southern Italy

By
Marcello Tropeano
Marcello Tropeano
Dipartimento di Scienze Geologiche, Universitgt della Basilicata, Campus Macchia Romana, 1-85100 Potenza, Italy (e-mail: tropeano@unibas.it)
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Luisa Sabato
Luisa Sabato
Dipartimento di Geologia e Geofisica, Universitgt di Bari, Via Orabona 4, 1-70125 Bari, Italy (e-mail: l.sabato@geo.uniba.it)
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Piero Pieri
Piero Pieri
Dipartimento di Geologia e Geofisica, Universitgt di Bari, Via Orabona 4, 1-70125 Bari, Italy (e-mail: p.pieri@geo.uniba.it)
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Published:
January 01, 2002

Abstract

The Bradanic Trough (southern Italy) is the Pliocene-present-day south Apennines foredeep. It is a foreland basin as subsidence due to westward subduction of the Adria Plate involves the continental crust of the Apulian domain. The infill succession of the Bradanic Trough is characterised by the presence of a long thrust sheet system (the so called ‘allochthon’) that occupied part of the accommodation space created on the foreland by subduction. The upper part of the infilling succession crops out along numerous sections. About 600 m of the 3-4 km basin-fill succession is exposed as the Bradanic Trough has experienced uplift during Quaternary times.

Outcropping successions are mainly characterized by shallow-marine deposits comprising carbonates of the Calcarenite di Gravina Formation, silty clay hemipelagites of the Argille subappennine Formation and coarse-grained bodies of the ‘Regressive coastal deposits’.

The Calcarenite di Gravina Formation (Middle-Late Pliocene-Early Pleistocene in age) crops out in a backstepping configuration onto the flanks of the Apulian Foreland highs. It displays evidence of strong transgression onto a karstic region previously dissected in a complex horst and graben system.

The Argille subappennine Formation (Late Pliocene-Middle Pleistocene in age) succeeds the carbonate sedimentation on the foreland side of the basin and represents the shallowing of the basin in the other sectors of the Bradanic Trough. Toward the Apennines chain, in the wedge-top area of the foredeep, the Argille subappennine Formation covers the allochthon, while in the depocentre (in the foredeep sensu stricto) the same formation overlays turbidite deposits. The latter characterize the

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Contents

Geological Society, London, Special Publications

Sediment Flux to Basins: Causes, Controls and Consequences

S.J. Jones
S.J. Jones
University of Durham, UK
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L.E. Frostick
L.E. Frostick
University of Hull, UK
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Geological Society of London
Volume
191
ISBN electronic:
9781862394391
Publication date:
January 01, 2002

GeoRef

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