Thickness record of varves from glacial Ojibway Lake recovered in sediment cores from Frederick House Lake, northeastern Ontario / G.R. Brooks.: M183-2/8851E-PDF
"The thicknesses of 384 rhythmic couplets were measured along a composite sequence of glacial Lake Ojibway glaciolacustrine deposits recovered in two sediment cores from Frederick House Lake, Ontario. The visual comparison of distinctive couplets in the CT-scan radiographs of the Frederick House core samples to photographs of core samples from Reid Lake show a match of ±1 varve number from v1656-v1902, and ±5 varve numbers between v1903-v2010, relative to the regional numbering of the Timiskaming varve series. There are two interpretations for the post-v2010 couplets that fall within the Connaught varve sequence of the regional series. In the first, the interpreted numbering spans from v2066-v2115, which produces a gap of 55 missing varves equivalent to v2011-v2065, and corresponds to the original interpretation of the Connaught varve numbering. The second spans v2011a-v2060a, and represents alternative (a) numbering for the same varves. Varve thickness data are listed in spreadsheet files (.xlsx and .csv formats), and CT-Scan radiograph images of core samples are laid out on a mosaic poster showing the interpreted varve numbering and between-core sample correlations of the varve couplets"--Abstract, page 1.
Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.917243&sl=0
| Department/Agency | Geological Survey of Canada, issuing body. |
|---|---|
| Title | Thickness record of varves from glacial Ojibway Lake recovered in sediment cores from Frederick House Lake, northeastern Ontario / G.R. Brooks. |
| Series title | Open file, 2816-7155 ; 8851 |
| Publication type | Series - View Master Record |
| Language | [English] |
| Format | Electronic |
| Electronic document |
|
| Note(s) | Includes bibliographical references (pages 16-18). |
| Publishing information | [Ottawa] : Geological Survey of Canada, 2022. ©2022 |
| Author / Contributor | Brooks, Gregory Robert, 1958- author. |
| Description | 1 online resource (18 pages) : illustrations (some colour), maps (some colour) + radiograph images (1 page). |
| Catalogue number |
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| Subject terms | Varves -- Ontario. Lake sediments -- Ontario. Glacial lakes -- Ontario. Varves -- Ontario. Sédiments lacustres -- Ontario. Lacs glaciaires -- Ontario. |
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