The lower Pliocene shallow-marine to continental succession of the Crotone Basin, a small forearc basin on the Calabrian Arc, Southern Italy, is represented by a mixed terrigenous–carbonate succession, up to 850 m thick, known as the Zinga Molasse, deposited in an active tectonic setting dominated by extensional structures and halokinesis. The succession may be informally subdivided into three main sequences, Zinga 1, Zinga 2, Zinga 3, each bounded by major unconformities produced by the interaction of tectonics and eustasy. The Zinga 1 sequence records terrigenous input into the basin leading to the development of stacked progradational wedges of shoreface and deltaic deposits. Spectacular thickness changes and progressive unconformities result from the activation of NE-trending growth folds and listric faults, and indicate that deposition occurred during extensional deformation and salt tectonics. However, the regional extent of the surfaces, the lack of evidence for changes in the local tectonic regime between sequences and the presence of listric faulting within sequences all favour eustatic sea-level change as the main control on the sequence development, although local tectonics strongly controlled sedimentary architecture.

Architectural styles of prograding wedges in a tectonically active setting, Crotone Basin, Southern Italy

Zecchin M.;
2003-01-01

Abstract

The lower Pliocene shallow-marine to continental succession of the Crotone Basin, a small forearc basin on the Calabrian Arc, Southern Italy, is represented by a mixed terrigenous–carbonate succession, up to 850 m thick, known as the Zinga Molasse, deposited in an active tectonic setting dominated by extensional structures and halokinesis. The succession may be informally subdivided into three main sequences, Zinga 1, Zinga 2, Zinga 3, each bounded by major unconformities produced by the interaction of tectonics and eustasy. The Zinga 1 sequence records terrigenous input into the basin leading to the development of stacked progradational wedges of shoreface and deltaic deposits. Spectacular thickness changes and progressive unconformities result from the activation of NE-trending growth folds and listric faults, and indicate that deposition occurred during extensional deformation and salt tectonics. However, the regional extent of the surfaces, the lack of evidence for changes in the local tectonic regime between sequences and the presence of listric faulting within sequences all favour eustatic sea-level change as the main control on the sequence development, although local tectonics strongly controlled sedimentary architecture.
File in questo prodotto:
File Dimensione Formato  
Zecchin et al 2003 JGS.pdf

non disponibili

Tipologia: Altro materiale allegato
Licenza: Non specificato
Dimensione 1.88 MB
Formato Adobe PDF
1.88 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14083/4445
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 48
  • ???jsp.display-item.citation.isi??? ND
social impact