Geological Survey of Canada, Current Research (Online) no. 2004-A2

Geological Survey of Canada, Current Research (Online) no. 2004-A2 PDF

Author: P. Van Der Heyden

Publisher: Natural Resources Canada

Published: 2004

Total Pages: 16

ISBN-13: 0662357671

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This report details the results of geochronological measurements made on 19 samples from locations in & directly adjacent to the eastern Bella Coola map area of British Columbia. The analytical data were extracted from a large, mostly unpublished data set that includes uranium/lead, potassium/argon, and argon/argon geochronometry for other parts of the Anahim Lake and Mount Waddington map areas. Analytical data, geological ages, and relevant observations for each dated sample are presented in chronological order. The age results provide broad constraints on pluton emplacement, volcanic eruption, and structural & metamorphic relationships in the study area, although these are discussed only in general terms.

Geological Survey of Canada, Current Research (Online) no. 2000-A2

Geological Survey of Canada, Current Research (Online) no. 2000-A2 PDF

Author: Kazuharu Shimamura

Publisher: Natural Resources Canada

Published: 2000

Total Pages: 8

ISBN-13: 0660179946

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The use of static global positioning system (GPS) equipment for accurate horizontal & vertical positioning in field geology operations at high latitudes is made difficult by the need to set up & operate a GPS reference station and limitations on the distance between the reference station & field GPS due to errors introduced by the ionosphere. Dual-frequency GPS receivers have the potential to eliminate these problems since they can eliminate ionospheric errors and thereby increase baseline lengths, thus potentially permitting the use of existing GPS reference stations. This paper describes the use of a dual-frequency receiver for establishing benchmarks along the Yukon River as a field trial of this technology. Field methods and post-processing of the data using GPS data from permanent receiving stations are described, and baseline results are presented. The derived benchmarks will be applied to a survey of fill thickness below the Yukon River.

Geological Survey of Canada, Current Research (Online) no. 2004-F1

Geological Survey of Canada, Current Research (Online) no. 2004-F1 PDF

Author: Nicole M. Rayner

Publisher: Natural Resources Canada

Published: 2004

Total Pages: 16

ISBN-13: 066235835X

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This paper presents results from uranium-lead dating of plutonic, volcanic, & sedimentary rocks from the Southern Indian Lake to Granville Lake area of northern Manitoba. The samples analyzed were collected from a range of tectonostratigraphic settings and provide constraints on the age of volcanism & sedimentation in the Rusty Lake Belt, on the deposition of fluvial to littoral facies sediments in the Partridge Breast Belt, and on the emplacement of orthogneiss and plutonic rocks.

Geological Survey of Canada, Current Research (Online) no. 2004-A1

Geological Survey of Canada, Current Research (Online) no. 2004-A1 PDF

Author: K. A. Simpson

Publisher: Natural Resources Canada

Published: 2004

Total Pages: 10

ISBN-13: 0662357094

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This paper summarizes field characteristics of volcanic & sedimentary facies along a transect within the Hazelton Group rocks in the east Telegraph Creek area of north-west British Columbia. It begins with a brief description of the geological setting, then presents facies descriptions & information on the distribution & associations of the rocks described. The facies are organized into the following mappable units: dacite-andesite breccia; coarse sandstone to conglomerate; felsic volcaniclastic & subordinate breccia & mudstone; interbedded mudstone & sandstone; and basalt.

Geological Survey of Canada, Current Research (Online) no. 2004-A3

Geological Survey of Canada, Current Research (Online) no. 2004-A3 PDF

Author: Yvon Lemieux

Publisher: Natural Resources Canada

Published: 2004

Total Pages: 10

ISBN-13: 0662378180

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This paper presents results of geological mapping conducted in 2003 as part of a project addressing the stratigraphic, structural, and metamorphic relationships along the Columbia River valley in British Columbia. The results relate to the stratigraphy of the Upper Arrow Lake & Trout Lake areas and the structural geology of the Columbia River fault zone. The significance of the stratigraphic succession found along Upper Arrow Lake is discussed in regard to previous theories concerning a crustal-scale displacement along the fault zone.

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