Kinematics of regional salt flow in the northern Gulf of Mexico - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Chapitre D'ouvrage Année : 2012

Kinematics of regional salt flow in the northern Gulf of Mexico

Jean-Pierre Brun
  • Fonction : Auteur
  • PersonId : 840706

Résumé

The kinematics of regional-scale salt flow in the northern Gulf of Mexico is analysed using: (i) a map of shelf-break contours at the termination of successive depositional episodes; (ii) the location and geometry of large-scale structures of the slope domain as imaged by seismics; and (iii) digital slope bathymetry. In the north margin, salt has flowed towards the SW since the Cretaceous with three main stages of development prior to, during and after a massive salt extrusion in the Early Miocene time. The corresponding sequence of structural development is discussed using a laboratory model. Contrary to all previous interpretations that invoked sedimentary loading as the main driving force, the analysis of regional-scale salt flow implies that the salt tectonics of the northern Gulf of Mexico is predominantly controlled by gliding above the margin dip. The SWdirected salt flow indicates that the north margin of the northern Gulf of Mexico trendsNW-SE, in agreement with plate kinematic models in which the Yucatan continental block has undergone a 45-608 dextral rotation relative to its present orientation
Fichier principal
Vignette du fichier
2012-Fort-Brun.pdf (14.85 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

insu-00717207 , version 1 (12-07-2012)

Identifiants

Citer

Xavier Fort, Jean-Pierre Brun. Kinematics of regional salt flow in the northern Gulf of Mexico. G. I. ALSOP, S. G. ARCHER, A. J. HARTLEY, et al. Salt Tectonics, Sediments and Prospectivity, Geological Society of London, pp.265-287, 2012, Geological Society of London, Special Publications, n°363, 978-1862393417. ⟨10.1144/SP363.12⟩. ⟨insu-00717207⟩
146 Consultations
1663 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More