Here two commercially-acquired seismic reflection profiles are used to establish the structure and stratigraphic relationships between the frontal part of the orogenic belt, the foredeep and foreland regions in the offshore continuation
of the Apennine system in the northern Ionian sea. Given the proximity of this study area, the tectono-stratigraphic relationships imaged on these seismic lines are likely to provide good analogues for Neogene basins and depositional systems for much
Seismic attributes correlated with incised valley thickness in recent stratigraphy of the Sunda Shelf, Indonesia
Indonesia ; Marineseismicprospection ; Pacific Ocean ; Sea floor ; South China Sea ; Stratigraphy ; Submarine geomorphology ; Submarine valley
Détroit de la Sonde ; Fond sous-marin ; Géomorphologie sous-marine ; Indonésie ; Mer de Chine méridionale ; Pacifique océan ; Sismique marine ; Stratigraphie ; Vallée sous-marine
A high-quality, large 3D seismic data volume collected in a highly channelized stratigraphic series found in the upper 500 ms of the Sunda Shelf in offshore Indonesia was used to map incised valley development on this shelf. Defined on a seismic
grid at 25-m spacing, 10 valley bases were then exported to ArcGIS, which was used to define each valley's thalweg. Valley-base elevation and several seismic attributes were then extracted along each thalweg. Resulting correlations and relationships
Un grand nombre de techniques de reconnaissance non destructives ont été développées pour l’industrie offshore dans le but de cartographier les fonds marins et de décrire la structure des couches sous-marines. La plupart de ces techniques sont
The purpose of this paper is 1) to provide a summary of the characteristics of the onshore and offshore facies and their origins 2) to describe the occurrence of marine placers in the Sept-Iles area, and 3) to integrate the sedimentation models
with placer genesis. The data from onshore, nearshore, and offshore sedimentary successions provide an opportunity for the integration of terrestrial and marine sedimentation models, providing a regional framework for understanding the development of marine
Les processus géomorphologiques actuels sur les pentes sous-marines: événements locaux et évolution structurale
Continental margin ; Geomorphogenesis ; Geotechnics ; Global tectonics ; Indonesia ; Marineseismicprospection ; Portugal ; Sea floor ; Sea level ; Submarine geomorphology ; Sumatera ; Tectonics
Fond sous-marin ; Géomorphogenèse ; Géomorphologie sous-marine ; Géotechnique ; Indonésie ; Marge continentale ; Niveau marin ; Portugal ; Sismique marine ; Sumatera ; Tectonique ; Tectonique globale
milieu sous-marin, dans lequel une même durée n'a pas la même efficacité morphogénique à des profondeurs différentes. A cause de cela des processus identiques et actuels évoluent différentiellement selon que la tectonique actuelle les place dans des
was built using reflection seismic and sea-floor bathymetry. The model covers the boundary between the oceanic crust of the Scotia Sea and the continental crust of the South Scotia Ridge, where the orientation of the SSR structure changes from SW-NE to W-E
High-resolution seismic stratigraphy of late Quaternary deposits in Manitounouk Sound, northern Quebec : effects of rapid postglacial emergence
Bay ; Canada ; Deglaciation ; Earthquake ; Glaciolacustrine ; Hudson ; Marine sediment ; Marineseismicprospection ; Mass movement ; Quaternary ; Quebec ; Stratigraphy
Baie ; Canada ; Déglaciation ; Glaciolacustre ; Hudson ; Mouvement de masse ; Quaternaire ; Québec ; Sismique marine ; Stratigraphie ; Sédiment marin ; Séisme
sédiments interprétés comme des dépôts de courants de gravité ayant comblé des bassins, et 3) une unité de comblement constituée de sédiments marins récents. Les cicatrices de glissement et les dépôts de courant de gravité de l'unité 2 correspondent à une
période de transition, entre les conditions glaciomarines et les conditions marines récentes et actuelles, avec des séismes intenses dus au relâchement de tensions pendant la phase initiale de déglaciation.
Atlantique ; Eau de fonte ; Fond sous-marin ; Géophysique ; Lithologie ; Mer du Nord ; Pléistocène ; Remplissage sédimentaire ; Sismique marine ; Tunnel sous-glaciaire
Structure and lithology of the infill sediments from 16 subglacial buried tunnel valleys of Pleistocene age in the North Sea were analyzed using 3D seismic data and geophysical log data from 5 hydrocarbon exploration wells. The infill sediments
are characterized by 3 seismic facies. A model for the formation of these typical sediment successions is proposed in which valley incision and infill are causally linked. This model is based on the theory of glaciohydraulic supercooling beneath ice-sheet margins
A comprehensive geotechnical survey for the offshore extention of Zeebrugge harbour illustrates some possibilities and limitations of seismic profiling in Belgian offshore areas and proves a striking example of its successful integration
of seismic and bathymetric surveys in the shallow nearshore zone along this south-eastern coast of Spain, carried out in the framework of the ESPACE geological program, and to evaluate whether or not the IPW can be correlated with the emergent coastal
[a2] Inst. of Marine and Coastal Sciences, State Univ. of New Jersey, Sandy Hook, Etats-Unis