| Title | Evolution and morphodynamics of a prograded beach-ridge foreland, northern Baffin Island, Canadian Arctic Archipelago |
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| Author | St-Hilaire-Gravel, D; Forbes, D L ; Bell, T |
| Source | Geografiska Annaler, Series A vol. 97, issue 3, 2015 p. 615-631, https://doi.org/10.1111/geoa.12103 |
| Image |  |
| Year | 2015 |
| Alt Series | Earth Sciences Sector, Contribution Series 20140495 |
| Publisher | Informa UK Limited |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Nunavut; Northern offshore region |
| NTS | 48D/11; 48D/12; 48D/14; 48E/11; 48E/12; 48E/13 |
| Area | Cape Charles Yorke; Crocker Bay; Dundas Harbour |
| Lat/Long WENS | -85.0000 -80.0000 75.0000 73.0000 |
| Subjects | Nature and Environment; gravels; beach ridges; sea level changes; coastal management; coastal studies; raised beaches; marine deposits; erosion; shoreline changes; shoreface deposits |
| Illustrations | satellite images; photographs; graphs |
| Program | Climate Change Geoscience Building Resilience to Climate Change in Canadian Communities |
| Released | 2016 12 14 |
| Abstract | Landward retreat (marine transgression) is a common response of coastal systems to rising relative sea level. However, given sufficient sediment supply, the coast may advance seaward. The latter
response of gravel barriers has been recorded in parts of southeastern and northwestern Canada, where seaward-rising sets of beach ridges are observed in areas of Holocene RSL rise. Cape Charles Yorke, northern Baffin Island, is a 5 km long gravel
foreland characterized by seaward-rising beach-ridge crest elevations. The prograded morphology of the Cape Charles Yorke foreland is a prime example of coastal response to a combination of rising RSL and abundant sediment supply, an unusual and
little-documented pattern in the Canadian Arctic. The main gravel supply to Cape Charles Yorke is likely from eroding bedrock and raised marine deposits southwest of the foreland. Although not the dominant sediment source, the Cape Charles Yorke
delta contributed to the formation of the foreland by sheltering it from easterly storm waves and providing an anchor point for the prograding ridges. The truncation of relict ridges by the modern shoreline suggests a recent regime shift from
continuous deposition to predominant erosion. The cause and timing of this shift are unknown but could result from a recent dwindling in sediment supply, increased accommodation space, increased wave energy, and/or an accelerated rise of relative sea
level. |
| Summary | (Plain Language Summary, not published)
Cape Charles Yorke (CCY), northern Baffin Island, is a 5 km-long gravel foreland with seaward-rising beach ridges. The prograded morphology of the CCY
foreland is a prime example of coastal response to a combination of rising relative sea level (RSL) and abundant sediment supply, an unusual and little-documented pattern in the Canadian Arctic. The main gravel supply to CCY is from eroding bedrock
and raised marine deposits southwest of the foreland. The CCY delta contributed to the formation of the foreland by sheltering it from easterly storm waves and providing an anchor point for the prograding ridges. The truncation of relict ridges by
the modern shoreline suggests a recent shift from continuous deposition to predominant erosion. The cause and timing of this shift are unknown but could result from a recent dwindling in sediment supply, increased accommodation space, increased wave
energy, and/or an accelerated rise of RSL. |
| GEOSCAN ID | 296068 |
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