Tectonic history of a non-accreting margin during the past 400 ka. Results of a submersible survey of the Peru Trench at 5-6°S - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Geology Année : 1993

Tectonic history of a non-accreting margin during the past 400 ka. Results of a submersible survey of the Peru Trench at 5-6°S

Jacques Bourgois
  • Fonction : Auteur
  • PersonId : 867596
Yves Lagabrielle
Patrick de Wever
Luc Aquilina
  • Fonction : Auteur
  • PersonId : 831382
  • IdRef : 076943534
Aline Dia
Anne Duperret
Marc Sosson

Résumé

The late Pleistocene tectonic history of the northern Peru convergent margin can be retraced using data collected during deep-sea dives of the submersible Nautile combined with a recent Hydrosweep survey conducted off Peru at lat 5°-6°S by the R/V Sonne. During the past 400 ka, a broad rollover fold formed in the middle slope area, in association with a major seaward-dipping detachment fault. A catastrophic debris avalanche occurred as the result of oversteepening of the landward flank of the rollover fold. The gravity failure of the slope, previously recognized by SeaBeam mapping, occurred at 13.8 ±2.7 ka and produced a destructive tsunami.
Fichier non déposé

Dates et versions

hal-04631819 , version 1 (02-07-2024)

Identifiants

Citer

Jacques Bourgois, Yves Lagabrielle, Patrick de Wever, Erwin Suess, Luc Aquilina, et al.. Tectonic history of a non-accreting margin during the past 400 ka. Results of a submersible survey of the Peru Trench at 5-6°S. Geology, 1993, 21 (6), pp.531-534. ⟨10.1130/0091-7613(1993)021<0531:THOTNP>2.3.CO;2⟩. ⟨hal-04631819⟩
11 Consultations
1 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More