Sedimentology and stratigraphy of a tidal sand bank in the southern North Sea

Trentesaux, Alain; Stolk, Ad; Berné, Serge

Document type :

Article dans une revue scientifique: Article original

DOI :

10.1016/S0025-3227(99)00007-9

Title :

Sedimentology and stratigraphy of a tidal sand bank in the southern North Sea

Author(s) :

Trentesaux, Alain [Auteur]

Université de Lille
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Stolk, Ad [Auteur]
Universiteit Utrecht / Utrecht University [Utrecht]
Berné, Serge [Auteur]
Institut Français de Recherche pour l'Exploitation de la Mer [IFREMER]

Journal title :

Marine Geology

Pages :

253-272

Publisher :

Elsevier

Publication date :

1999-07

ISSN :

0025-3227

HAL domain(s) :

Planète et Univers [physics]

English abstract : [en]

A set of 125 vibrocores collected on the basis of a dense grid of high and very high resolution seismic coverage over a tidal sand bank the Middelkerke Bank. provides a unique opportunity to reconstruct the stratigraphy ...
Show more >A set of 125 vibrocores collected on the basis of a dense grid of high and very high resolution seismic coverage over a tidal sand bank the Middelkerke Bank. provides a unique opportunity to reconstruct the stratigraphy and sedimentary facies succession of such a large tidal sand body. Five sedimentary facies are distinguished. They range from clay to pebble and display various types of bedding and lithologies corresponding to different depositional environments. A succession of four Late Quaternary units are defined on the basis of the stratigraphic framework given by the seismic grid. The first unit represents the infill of a palaeovalley system by tidally influenced sedimentary facies. It is followed by extensive and thick lagoonal or sub-tidal deposits. The third unit reveals the development of a landward prograding storm-dominated sand bar. This unit is dominated by clean fine sand. The last unit corresponds to the present-day tidal sand-bank. It shows the typical offshore tidal sand bank facies cross-bedded sand. prograding in an offshore direction. Like other banks located in a more offshore position, the Middelkerke Bank is a composite bank incorporating facies which do not occur in ‘classic’ tidal sand banks.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL

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