Geological Survey of Canada, Current Research (Online) no. 2000-A12
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Publisher : Natural Resources Canada
Page : 13 pages
File Size : 40,50 MB
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ISBN : 0660180049
Author :
Publisher : Natural Resources Canada
Page : 13 pages
File Size : 40,50 MB
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ISBN : 0660180049
Author : Elizabeth S. Carter
Publisher : Natural Resources Canada
Page : 13 pages
File Size : 45,49 MB
Release : 2000
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ISBN : 0660179997
The Upper Triassic sections outcropping on the Queen Charlotte Islands contain outstanding successions of conodont and radiolarian microfossils. This report focuses on the successions about the Carnian-Norian boundary at several key localities. This boundary may coincide with an interval of significant change in global fauna and flora, particularly in terrestrial habitats. The purpose of the study reported is to demonstrate faunal change that may potentially be used in global correlation and definition of the Carnian-Norian boundary, and thus contribute towards the resolution of historical events that date from that time. The report summarizes the radiolarian change within the boundary interval identified primarily by conodonts but supplemented by some molluscan data.
Author :
Publisher : Natural Resources Canada
Page : 13 pages
File Size : 24,74 MB
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ISBN : 066235592X
Author :
Publisher : Natural Resources Canada
Page : 13 pages
File Size : 20,47 MB
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Author : Selina Tribe
Publisher : Natural Resources Canada
Page : 13 pages
File Size : 16,32 MB
Release : 2003
Category : Geology, Structural
ISBN : 0662332970
Author :
Publisher : Natural Resources Canada
Page : 13 pages
File Size : 18,5 MB
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ISBN : 0660180057
Author : Allen Gottesfeld
Publisher : Oregon State University Press
Page : 356 pages
File Size : 44,98 MB
Release : 2008
Category : Business & Economics
ISBN :
British Columbia¿s Skeena River is one of the great salmon rivers of the North Pacific. The river and its fish have supported indigenous peoples for thousands of years. More recently, the Skeena has earned world renown for its recreational fishery and magnificent wilderness setting. Yet, over the last century, fish populations have declined from overfishing, habitat alteration and, to an unknown degree, climate change. Development of mining as well as oil and gas resources may also pose threats to fish populations.This book presents the first thorough review of the salmon stocks and freshwater species of the Skeena River. Initial chapters summarize the river¿s environment, fish, and fisheries. The book then examines the physical geography, development history, indigenous use, and major salmon stocks of each of the watershed¿s sub-basins. This volume makes available for the first time¿to researchers, field biologists, fishermen and natural history enthusiasts¿both the published, and largely unpublished, literature on this productive salmon ecosystem.
Author :
Publisher : Natural Resources Canada
Page : 5 pages
File Size : 28,7 MB
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ISBN : 0660180529
Author : David S. Mueller
Publisher : CreateSpace
Page : 82 pages
File Size : 45,48 MB
Release : 2014-06-16
Category : Technology & Engineering
ISBN : 9781500222666
The mission of the U.S. Geological Survey (USGS) Water Resources Discipline is to provide the information and understanding needed for wise management of the Nation's water resources. Inherent in this mission is the responsibility of collecting data that accurately describe the physical, chemical, and biological attributes of water systems. These data are used for environmental and resource assessments by the USGS, other government agencies and scientific organizations, and the general public. Reliable and quality-assured data are essential to the credibility and impartiality of the water-resources appraisals carried out by the USGS.
Author : J. Wright Horton
Publisher :
Page : 478 pages
File Size : 23,65 MB
Release : 2005
Category : Cryptoexplosion structures
ISBN :