| Title | Improved relative sea-level histories for Victoria and Vancouver, British Columbia, from isolation-basin coring |
| Download | Downloads |
| Author | James, T S; Hutchinson, I; Clague, J J |
| Source | Geological Survey of Canada, Current Research (Online) no. 2002-A16, 2002, 7 pages, https://doi.org/10.4095/213083 (Open Access) |
| Image |  |
| Year | 2002 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| Related | This publication is contained in Geological Survey of
Canada; (2002). Current Research 2002, winter release, Geological Survey of Canada, Current Research no. 2002 |
| File format | pdf |
| Province | British Columbia |
| NTS | 92G/02; 92G/03; 92G/06; 92G/07; 92B/06; 92B/11 |
| Area | Victoria; Vancouver; Fraser Lowland |
| Lat/Long WENS | -123.5000 -122.5000 49.5000 49.0000 |
| Lat/Long WENS | -123.5000 -123.0000 48.7500 48.5000 |
| Subjects | marine geology; hydrogeology; surficial geology/geomorphology; sea level changes; sea level fluctuations; salt water; surface waters; water levels; marine deposits; glaciomarine deposits; ice movement;
isostatic rebound; Cenozoic |
| Illustrations | sketch maps; plots |
| Released | 2002 01 22 |
| Abstract | Freshwater sediments in low-elevation lakes and bogs in southwestern British Columbia are commonly underlain by marine and glaciomarine deposits. Radiocarbon ages from the marine-freshwater transition
define the time that basins became isolated from the sea. Data from five lakes and bogs in the Victoria area, combined with earlier results, indicate that sea level fell from above 60 m a.s.l. to below present sea level between 12 500 and 11 500 14 C
years ago. In the Fraser Lowland, data from seven lakes and bogs show that sea level fell from above 180 m a.s.l. to about 80 m a.s.l. between 12 500 and 12 000 14 C years ago, to 20-30 m a.s.l. by 11 000 14C years ago, and to about 10 m a.s.l. by 10
000 14C years ago. A previously proposed secondary resubmergence of the Fraser Lowland of 100 m or more is ruled out by the radiocarbon ages and by diatom analyses. |
| GEOSCAN ID | 213083 |
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