GEOSCAN Search Results: Fastlink

GEOSCAN Menu


TitleA large, glacially-modified, shelf-edge canyon, Scotian Shelf, Atlantic Canada
AuthorCameron, G D M; King, E L; Todd, B J
SourceAtlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient; Geological Society, Memoirs vol. 46, 2016 p. 403-404, https://doi.org/10.1144/M46.115
Year2016
Alt SeriesEarth Sciences Sector, Contribution Series 20140571
PublisherThe Geological Society of London
Documentbook
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceEastern offshore region
AreaThe Gully; Scotian Shelf
Lat/Long WENS -59.3333 -58.8333 44.1667 43.6667
Subjectssubmarine canyons; glacial erosion; glacial history; meltwater channels; glacial erosion; erosional surfaces; sandstones; continental shelf; continental slope; turbidity currents; Cenozoic
Illustrationslocation maps; bathymetric profiles
ProgramMarine Geohazards, Public Safety Geoscience
AbstractLocated on the Scotian shelf, The Gully is the largest submarine canyon on the outer southeastern Canadian continental margin (Fig. 1a, f). It appears morphologically similar to many other canyons on the Scotian Slope; however, it indents the continental shelf much deeper than other canyons, connecting the middle shelf to the continental slope. It is generally recognized that The Gully formed by fluvial, glacial, and meltwater erosion (Fader et al. 1998) that cut deeply into Cenozoic mudstone and sandstone units. It was excavated over the past million years as successive continental glaciations lowered sea level, exposing the shelf and allowing rivers to erode and deposit sediments near the top of the continental slope. The Gully was also partially eroded by turbidity currents that flowed down the canyon at times of glacial maxima.
Summary(Plain Language Summary, not published)
Showcasing the glacial and landform features of a large submarine canyon and summarizing it's geological history.
GEOSCAN ID296237