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TitleMultibeam bathymetry and shaded seafloor relief, Lunenburg Bay, Scotian Shelf, offshore Nova Scotia
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AuthorKing, E L; Beaver, D
SourceGeological Survey of Canada, Open File 8177, 2017, 1 sheet, https://doi.org/10.4095/299689
Year2017
PublisherNatural Resources Canada
PublisherCanadian Hydrographic Service
Documentopen file
Lang.English
Maps1 map
Map Info.geophysical, bathymetry and relief, 1:25,000
ProjectionUniversal Transverse Mercator Projection, zone 20T (NAD83)
Mediaon-line; digital
RelatedThis publication is related to the following publications
File formatpdf
ProvinceEastern offshore region; Nova Scotia
NTS21A/08
AreaScotian Shelf; Lunenburg Bay; unenburg Harbour
Lat/Long WENS -64.3333 -64.1250 44.3833 44.2583
Subjectsgeophysics; marine geology; surficial geology/geomorphology; bathymetry; seafloor topography; bedrock topography; bedforms; megaripples; sand waves; pockmarks; methane; submarine ridges; terraces; marine sediments; muds; sands; gravels; boulders; glacial deposits; glaciomarine deposits; tills; till mounds; glacial features; drumlins; geophysical surveys; acoustic surveys, marine; sonar surveys; side-scan sonar; sediment dispersal; erosion; bedrock geology; structural features; folds; faults; jointing; glacial history; postglacial evolution; sea level changes; dredging; biogenic gas; scour marks; multibeam bathymetry; mud moats; anthropogenic impacts; shipwrecks; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; index maps; photographs; geophysical images; cross-sections; geological sketch maps
Viewing
Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
ProgramMarine Geohazards, Public Safety Geoscience
Image
Released2017 04 12
Summary(Plain Language Summary, not published)
This illustrated bathymetric (water depth) map, in shaded relief view, is one of a three-map series of Lunenburg Bay at a scale of 1:25 000. Water depth is derived from 2004-06 sonar surveys and displayed as a beige and orange to blue colour spectrum. An insert map of the harbor shows natural and anthropogenic details including shallow gas escape, dredging and dredge spoils, and anchor marks. Selected depth profile inserts help characterize across bedrock, sand dunes, and glacial and current-generated features. Another insert details the scuttling site of a military ship. The town and harbour have characteristic glacier-influenced morphology while most of Lunenburg Bay follows the same bedrock morphological platforms, folds and minor faults as on adjacent land (slates and metamorphosed sandstones) but generally with better exposure than on land. Sediment distribution is governed largely by glacial processes and their deposits (till and outwash sands and gravels), past lower sea-level and its subsequent rise which effectively erodes most sediment and drowned extensive salt marsh.
GEOSCAN ID299689