Osservazioni stratigrafiche e mineralogiche sulle coperture detritiche della Valle di Maratea (Basilicata)

Stratigraphic and mineralogical observations of the continental deposits within the Maratea Valley (Basilicata, Italy)

Authors

  • Maria Amelio Cnr - Istituto di Ricerca per la Protezione Idrogeologica nell'Italia meridionale ed insulare, Cosenza, Italy Author
  • Emilia Le Pera Cnr - Istituto di Ricerca per la Protezione Idrogeologica nell'Italia meridionale ed insulare, Cosenza, Italy Author
  • Vincenzo Rizzo Cnr - Istituto di Ricerca per la Protezione Idrogeologica nell'Italia meridionale ed insulare, Cosenza, Italy Author

Keywords:

Paleoenvironmental characterization, Mineralogy, Stratigraphy, Continental deposits, Volcanoclastic layers, Maratea Valley (Italy)

Abstract

Quaternary deposits of the Maratea Valley (Lucania, southern Italy) experienced intense gravitational deformations in a tectonically active area. Stratigraphic and morphological characteristics of the sediments allow the distinction of two depositional phases while geomorphological features mark an erosional event and a mass failure phase between them. The first depositional phase (stage a) is widely diffuse all over the valley. It is characterized by well-cemented clast supported calcareous breccias and minor debris flows whose thickness is variable but, generally, less than 60 m. This first depositional phase is abruptly truncated by an extensive erosional event (stage b). This erosional event causes a deep incision of both deposits of the stage a and of the bedrock. A mass failure episode (stage c) is characterized by landslide morphological features and related deposits. The following phase (stage d), is characterized by debris flow deposits, consisting dominantly of rounded clasts (dm to cm in diameter) in a reddish clay matrix. Interstratified with these deposits are lacustrine black clays sometimes graphite-bearing and two main volcanoclastic layers.

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Published

2024-07-02

Issue

Section

Proceedings of the meeting on large and slow gravitational phenomena in inhabited centres of Alpine and Apenninic regions. Maratea (Italy), 28-30 September 1995

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