Geological Survey of Canada, Current Research (Online) 2007-B1
Author :
Publisher : Natural Resources Canada
Page : 14 pages
File Size : 10,14 MB
Release :
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ISBN : 0662449517
Author :
Publisher : Natural Resources Canada
Page : 14 pages
File Size : 10,14 MB
Release :
Category :
ISBN : 0662449517
Author :
Publisher : Natural Resources Canada
Page : 16 pages
File Size : 37,23 MB
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ISBN : 0662469097
Author : S. Connell-Madore
Publisher : Natural Resources Canada
Page : 15 pages
File Size : 41,8 MB
Release : 2006
Category : Shale
ISBN : 0662436121
Author : Colin E. Dunn
Publisher : Natural Resources Canada
Page : 20 pages
File Size : 39,93 MB
Release : 2009
Category : Biogeochemistry
ISBN : 1100123458
Author :
Publisher : Natural Resources Canada
Page : 14 pages
File Size : 38,63 MB
Release : 2002
Category : Geology
ISBN : 0662324447
Author :
Publisher : Natural Resources Canada
Page : 23 pages
File Size : 35,4 MB
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ISBN : 1100126775
Author :
Publisher : Natural Resources Canada
Page : 14 pages
File Size : 10,96 MB
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ISBN : 0662396456
Author : Mike E. Villeneuve
Publisher : Natural Resources Canada
Page : 9 pages
File Size : 10,91 MB
Release : 2005
Category : Geological time
ISBN : 0662418921
The Quilchena fossil site in the Okanagan Highlands of south central British Columbia is a rich repository of Eocene plant, insect, & fish fossils. Reliable age assignment of this site is critical in order to reconstruct the biogeographic, climatic, & evolutionary relationships between the flora & fauna of the Okanagan Highlands and those of other Tertiary sites around the world. Previous radiometric age determinations have been variable and inconclusive. This paper presents new data using uranium-lead dating of zircons from a thick tephra combined with argon-argon dating of sanidine crystals from the same bed. The age determined can be securely ascribed to the Quilchena fossils, since the dated tephra was deposited within the fossil-bearing shale & mudstone sequences.
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Publisher :
Page : pages
File Size : 37,88 MB
Release : 1989
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ISBN :
Author : Geological Survey of Canada
Publisher :
Page : 138 pages
File Size : 45,34 MB
Release : 1981
Category : Canada
ISBN : 9780660112251