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TitreNew color display techniques help to interpret deep seismic reflections
AuteurMarillier, F; Hull, P; Roest, W R; Durling, P
SourceEos, Transactions of the American Geophysical Union vol. 71, no. 42, 1990 p. 1147 - 1150, https://doi.org/10.1029/eo071i042p01147
Année1990
Séries alt.Commission géologique du Canada, Contributions aux publications extérieures 12790
Séries alt.Lithoprobe Publication 174
ÉditeurWiley-Blackwell
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1029/eo071i042p01147
Mediapapier; en ligne; numérique
Formatspdf
Sujetslevés sismiques; profils sismiques; méthodes sismiques; données sismiques; interpretations sismiques; techniques de cartographie; analyses colorimétriques; Liens et fonctions; Sciences et technologie; géomathématique
Illustrationssesimic reflection profiles
ProgrammeFrontier Geoscience Program
ProgrammeLithoprobe
ProgrammeCRSNG Conseil de recherches en sciences naturelles et en génie du Canada
Résumé(disponible en anglais seulement)
Deep seismic reflection data typically sample the entire Earth's crust and usually have reflection patterns different from those of sediments. Continuous reflections over distances longer than a few kilometers are rare, and their amplitudes and dips may vary considerably within a small portion of the seismic section. This makes it difficult to observe consistent trends in the reflections. Such observations are important because the interpretation of deep seismic data relies on consistent reflection patterns that identify tectonic units. For example, Marillier et al. [1989a, b] identified three lower crustal blocks underlying the northern Appalachians in eastern Canada, on the basis of consistent seismic characteristics over several hundreds of kilometers. Another important feature, the crust-mantle boundary, is sometimes difficult to detect because the reflectivity of the lower crust diminishes gradually with depth.
GEOSCAN ID215274