000 03001nam  2200397zi 4500
0019.917243
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008221114t20222022oncab   ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn-on
0861 |aM183-2/8851E-PDF
1001 |aBrooks, Gregory Robert, |d1958- |eauthor.
24510|aThickness record of varves from glacial Ojibway Lake recovered in sediment cores from Frederick House Lake, northeastern Ontario / |cG.R. Brooks.
264 1|a[Ottawa] : |bGeological Survey of Canada, |c2022.
264 4|c©2022
300 |a1 online resource (18 pages) : illustrations (some colour), maps (some colour) + |eradiograph images (1 page).
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aOpen file, |x2816-7155 ; |v8851
504 |aIncludes bibliographical references (pages 16-18).
5203 |a"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.
650 0|aVarves|zOntario.
650 0|aLake sediments|zOntario.
650 0|aGlacial lakes|zOntario.
650 6|aVarves|zOntario.
650 6|aSédiments lacustres|zOntario.
650 6|aLacs glaciaires|zOntario.
7102 |aGeological Survey of Canada, |eissuing body.
830#0|aOpen file (Geological Survey of Canada)|v8851.|w(CaOODSP)9.506878
85640|qPDF|s17.76 MB|uhttps://publications.gc.ca/collections/collection_2023/rncan-nrcan/m183-2/M183-2-8851-eng.pdf|z(report)
85640|qPDF|s18.87 MB|uhttps://publications.gc.ca/collections/collection_2023/rncan-nrcan/m183-2/M183-2-8851-1-eng.pdf|z(Radiograph images of the Frederick House Lake cores)
8564 |qHTML|sN/A|uhttps://doi.org/10.4095/329275|z(complete dataset)