Bibliothèque Électronique Lac Saint-Pierre

High resolution seismic applied to quaternary geology

Jessop, J. M. (1990). High resolution seismic applied to quaternary geology. Canadian Geotechnical Conference . p. 665-670.

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Seismic reflection is presently the most accurate and widely used geophysical method in oil and gas exploration. It enables the petroleum geologist to properly identify geological features at depths up to 10 km. Seismic reflection has undergone a major technical breakthrough in the 1980's and new applications are now targeted towards shallow geology. The seismic reflection method provides a time cross-section of the earth which can easily be converted to a depth cross-section with sufficient borehole information. A seismic cross-section is an economical tool to interpolate between two wells or two outcrops. To properly image a specific geological section, it is imperative that the engineer (or the geologist) works in close collaboration with the geophysicist to optimize the final results. This paper will introduce the seismic reflection method to geologists and engineers with no geophysical background and will demonstrate its benefits in imaging quaternary deposits. The method will be described with emphasis on resolution and determination of physical properties of glacial terrains. Examples from the lake St-Pierre area will illustrate how the seismic reflection method can be tailored to acquire data at shallow depths.

Type de document: Article scientifique
Statut du texte intégral: Autre
Mots-clés libres: Acoustic impedance, Acoustic wave reflection, Boreholes, Data acquisition, Geology, Geophysics, Imaging techniques, Interpolation, Seismic waves.
Sujets: 2. Milieu physique > 2.1. Géologie
Date de dépôt: 04 août 2016 18:30
Dernière modification: 04 août 2016 18:30

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