Deep sea depositional systems and submarine gravity instabilities: selected case histories on the continental slope offshore the Campania region (Abstract/Poster in convegno)

Type

• Abstract/Poster in convegno (Classe)
• Prodotto della ricerca (Classe)

Label

• Deep sea depositional systems and submarine gravity instabilities: selected case histories on the continental slope offshore the Campania region (Abstract/Poster in convegno) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Alternative label

• Gemma Aiello; Ennio Marsella; Renato Tonielli; Claudio D'Isanto (2007)
  Deep sea depositional systems and submarine gravity instabilities: selected case histories on the continental slope offshore the Campania region
  in Geoitalia 2007, Rimini
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Gemma Aiello; Ennio Marsella; Renato Tonielli; Claudio D'Isanto (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

• Nessuna (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• Nessuna (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto

• Abstract/poster a convegno nazionale (literal)

Note

• Abstract (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• CNR-IAMC Sede di Napoli (literal)

Titolo

• Deep sea depositional systems and submarine gravity instabilities: selected case histories on the continental slope offshore the Campania region (literal)

Abstract

• The continental slope offshore the Campania region (Southern Tyrrhenian sea, Italy) represents a good natural laboratory in order to evaluate the relationhips between submarine geological processes and gravity instabilities in deep waters both in volcanic and sedimentary settings and corresponding geological and environmental hazard due to earthquakes, volcanic eruptions and tectonic activity in correspondence to significant faults. Several case histories have been investigated based on marine geophysical datasets collected by the CNR-IAMC of Naples, Italy on Southern Italy continental margin. Deep sea depositional processes and submarine gravity instabilities of Dohrn and Magnaghi canyons (Bay of Naples, Italy) result from the interactions between volcanic activity of Phlegrean Fields and Ischia and Procida districts and sedimentary processes at the Sarno-Sebeto river mouth. The canyon system is actually inactive, as evidenced by the occurrence at the sea bottom of the Holocene drape related to the last sea level highstand. Gravity instabilities occur at both the canyons'heads: while the Dohrn canyon is characterized by a double regressive head, the Magnaghi canyon shows a trilobate head, formed by the junction of three main tributary channels and coincident with the retreating shelf break, located along the - 140 m isobath. The intra-slope basin located between the two canyons shows large channel-levee complexes as kilometric seismic units cropping out at the sea bottom; chaotic bodies interlayered in the stratigraphic succession are interpreted as slump deposits. The Cuma canyon represents a complex drainage system in a volcano-sedimentary area controlled both by sedimentary processes at the Volturno river mouth and by volcanic activity in the northern Phlegrean Fields volcanic complex. A dense network of tributary channels is confined in a tectonically-controlled morphological step. Deep sea depositional systems vary from sandy turbidites organised as channel levee complexes, both active and fossil, to outer shelf and slope marine sediments. Gravity instabilities, controlled both by the occurrence of shallow gas pockets, common in the prodelta successions and by sinsedimentary tectonics, appear as creepings and slumps involving recent sediments, cropping out at the sea bottom. Finally, gravity instabilities occurring along the steep slope bounding southwards the Sorrento Peninsula and the Capri island have been studied. The slope is controlled by master fault bounding southwards the structural high Capri island-Sorrento Peninsula, having an average throw of about 1500 m. The fault downthrows the Meso-Cenozoic carbonates cropping out along the Sorrento Peninsula structural high under the Pleistocene sedimentary basin of the Salerno Valley, having depocentres of thousand meters of sediments. A main aim was the geologic interpretation of bathymetric profiles, constructed based on Multibeam bathymetry, together with the interpretation of a new Digital Terrain Model of the northern sector of the Salerno Bay. (literal)

Prodotto di

• Institute for coastal marine environment (IAMC) (Istituto)
• Sviluppo di tecnologie e metodologie per l'acquisizione e l'interpretazione e la diffusione di dati di geologia marina e ambientale per la gestione sostenibile (TA.P07.016.001) (Modulo)

Autore CNR

• ENNIO MARSELLA (Persona)
• GEMMA AIELLO (Persona)
• RENATO TONIELLI (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Deep sea depositional systems and submarine gravity instabilities: selected case histories on the continental slope offshore the Campania region" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute for coastal marine environment (IAMC) (Istituto)
• Sviluppo di tecnologie e metodologie per l'acquisizione e l'interpretazione e la diffusione di dati di geologia marina e ambientale per la gestione sostenibile (TA.P07.016.001) (Modulo)

Autore CNR di

• GEMMA AIELLO (Persona)
• RENATO TONIELLI (Unità di personale interno)
• ENNIO MARSELLA (Persona)

Insieme di parole chiave di

• Keywords of "Deep sea depositional systems and submarine gravity instabilities: selected case histories on the continental slope offshore the Campania region" (Insieme di parole chiave)