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TitreReport on the surficial geology of upper Chaleur Bay, mapped using MS26B echosounder data from the Canadian Hydrographic Service
TéléchargerTéléchargements
AuteurKoppen, L; Geomarine Associates Ltd.
SourceCommission géologique du Canada, Dossier public 1327, 1986, 45 pages (1 feuille), https://doi.org/10.4095/130135 (Accès ouvert)
Année1986
ÉditeurCommission géologique du Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/130135
CartesCette publication contient 1 carte
Info. cartedépôts meubles, 1/50,000
Mediapapier; en ligne; numérique
Formatspdf
ProvinceNouveau-Brunswick; Région extracotière de l'est
SNRC21O/16; 22B/01
Lat/Long OENS -66.5000 -66.0000 48.1667 47.9167
Sujetssédiments marins; silts; boues; sables; études côtières; sedimentation; transport des sediments; chenaux; levés géophysiques; levés acoustiques marins; échosondage; géologie des dépôts meubles/géomorphologie; géologie marine; Phanérozoïque; Cénozoïque; Quaternaire
Illustrationslocation maps; tables; figures; profiles
Points de vente
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Diffusé1986 09 01; 2017 06 30
Résumé(Sommaire disponible en anglais seulement)
Surficial sediment texture has been mapped in the Upper Bay of Chaleur using MS26B echosounder data collected by the Canadian Hydrographic Service in 1964. Four types of bottom sediment , I, II, IIa and III, interpreted as sandy silt, mud, sandy mud and sand, are distinguished on the basis of reflector characteristics. Sediment is generally distributed with the coarsest material in shallow water and the finer material deposited in deeper areas.
A submerged and partially buried river channel has been traced from the mouth of the Restigouche River eastward to the margin of the map area. Apparent scouring indicates strong bottom currents in the section of channel between profiles El-E2 and Jl-J2. Sediment distribution also indicates stronger bottom currents north of the channel than to the south. Thus, areas favourable for dumping of dredged material would be southwest of the channel, over Type IIa sediment, or in the eastern portion of the map area, over Type II sediment.
GEOSCAN ID130135