Geological Survey of Canada, Current Research (Online) no. 2004-A2 PDF Download
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Author: P. Van Der Heyden
Publisher: Natural Resources Canada
ISBN: 0662357671
Category : Potassium-argon dating
Languages : en
Pages : 16
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Book Description
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 The analytical data were extracted from a large, mostly unpublished data set that includes uranium/lead, potassium/argon, and argon/argon geochronometry for other parts of the Anahim Lake and Mount Waddington map areas.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.
Author: P. Van Der Heyden
Publisher: Natural Resources Canada
ISBN: 0662357671
Category : Potassium-argon dating
Languages : en
Pages : 16
Get Book Here
Book Description
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 The analytical data were extracted from a large, mostly unpublished data set that includes uranium/lead, potassium/argon, and argon/argon geochronometry for other parts of the Anahim Lake and Mount Waddington map areas.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.
Author:
Publisher: Natural Resources Canada
ISBN: 0662386183
Category :
Languages : en
Pages : 14
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Book Description
Author: K. Wetherell
Publisher: Natural Resources Canada
ISBN: 0662411226
Category : Geology
Languages : en
Pages : 12
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Book Description
The West Tuya lava field is located about 95 kilometres north-north-west of Dease Lake, British Columbia. This report presents an overview & summary of field work, geographic information system spatial analysis, and preliminary petrographic analysis conducted at the field in 2003-04. Highlights of this work include: identification of three sub-aerial shield volcanoes and their mineral composition; confirmation that mantle-derived peridotite inclusions are present at two of the volcanoes; and interpretation of the sub-aerial lava flows. The minimum and maximum volumes of material erupted are also estimated.
Author: Nicole M. Rayner
Publisher: Natural Resources Canada
ISBN: 066235835X
Category : Geological time
Languages : en
Pages : 16
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Book Description
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.
Author:
Publisher: Natural Resources Canada
ISBN: 0662381327
Category :
Languages : en
Pages : 22
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Book Description
Author: Edith Martel
Publisher: Natural Resources Canada
ISBN: 0662371313
Category : Geological time
Languages : en
Pages : 14
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Book Description
This report presents findings of a bedrock geological mapping project carried out in 2003 in the Ferguson Lake area, located about 200 kilometres west of Rankin Inlet, Nunavut. The project was initiated to provide better understanding of the geology & deformation history of the area and to put a local nickel-copper-platinum group element deposit into a regional context. The main part of the report describes the rock units exposed in the area (metamorphosed supracrustal rocks and intrusive rocks) and the area's structural elements (gneissosity, folds, foliation, shear zones, faulting). An attempt is then made to correlate the deformational features observed in the area with those documented by other researchers. Finally, implications of the findings for the timing of mineralization are briefly discussed.
Author: S. Connell-Madore
Publisher: Natural Resources Canada
ISBN: 0662369793
Category : Geological surveys
Languages : en
Pages : 11
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Book Description
Electrical resistivity measurements previously made on graphitic shale samples from the Astarte River Formation on Baffin Island indicate that they display weak to strong anisotropic characteristics, with low and high resistivities in the directions parallel & perpendicular to foliation respectively. The purpose of the study described in this paper is to determine the electrical conductivity mechanisms that resulted in those characteristics. Study methods included electrical resistivity and porosity measurements, graphite thin-section analysis, and scanning electron microscopy. Resistivity-related factors examined in the study include pore-fluid connectivity, the presence of graphite, and the insulating quality of quartz grain layers.
Author: Hans P. Trettin
Publisher: Natural Resources Canada
ISBN: 0662378385
Category : Formations (Geology)
Languages : en
Pages : 13
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Book Description
The area studied in this paper covers southern Cortes Island, Marina Island, and north-west Hernando Island in the Strait of Georgia, British Columbia. The paper first reviews the geological setting & physiography of the study area, then presents results of mapping Pleistocene (Wisconsinan) strata exposed in the area. The stratigraphic succession, having maximum thickness of 130 metres, is subdivided into six major units, all recording cyclical, climate-controlled, primarily marine deposition. Established names are used for two widespread formations (Cowichan Head and Quadra Sand) and local names are introduced for newly determined formations. Probable sources of the formation sediments are briefly discussed.
Author:
Publisher: Natural Resources Canada
ISBN: 0662424719
Category : Geology
Languages : en
Pages : 11
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Book Description
Author:
Publisher: Natural Resources Canada
ISBN:
Category :
Languages : en
Pages : 13
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Book Description
