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Geological Survey of Canada, Current Research (Online) no. 2000-A10

Geological Survey of Canada, Current Research (Online) no. 2000-A10
Author: L. C. Struik
Publisher: Natural Resources Canada
Total Pages: 10
Release: 2000
Genre:
ISBN: 0660180022

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The final year of the Nechako NATMAP project to study the geology of central British Columbia was used to research information collected in the field & laboratory, and to compile & document the study results. This article includes a review of upcoming publications & other products, by type of product: maps, journal articles, conference presentations, and computer products, as well as ongoing research on petrology, palaeontology, terrane characterization, tectonics & structure, and Quaternary geology.


Geological Survey of Canada, Current Research (Online) no. 2000-A5

Geological Survey of Canada, Current Research (Online) no. 2000-A5
Author: Martin De Keijzer
Publisher: Natural Resources Canada
Total Pages: 12
Release: 2000
Genre: Faults (Geology)
ISBN: 0660179970

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A well-exposed section about 250 metres wide below the high water line of the Jennings River, Teslin Lake map area in northern British Columbia shows part of the Teslin Fault and provides an opportunity to constrain the fault's kinematic history by direct ground observations. This report describes preliminary structural observations of this section of the Teslin Fault, including the rock types involved, mylonitic & ultramylonitic structures, and deformation. Indications of two main episodes of shearing are discussed.


Geological Survey of Canada, Current Research (Online) no. 2000-F2

Geological Survey of Canada, Current Research (Online) no. 2000-F2
Author: Keith Sircombe
Publisher: Natural Resources Canada
Total Pages: 14
Release: 2000
Genre:
ISBN: 0660182289

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Initial assessment and visual communication of the salient features of large sets of geochronological age data are commonly achieved with binned frequency histograms or probability density distributions. This paper describes the mathematical basis of traditional binned frequency histograms and probability density distributions, then compares & contrasts the advantages & limitations of both methods for displaying absolute age data. Important points related to the use of these diagrams as the principal means of communication of such data are noted.


Geological Survey of Canada, Current Research (Online) no. 2000-E15

Geological Survey of Canada, Current Research (Online) no. 2000-E15
Author: T. J. Katsube
Publisher: Natural Resources Canada
Total Pages: 11
Release: 2000
Genre:
ISBN: 0660182203

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This paper presents a determination of the evolution characteristics of a set of shale pore-structure components (storage porosity, connecting porosity, flow path size, and flow path density) with compaction. The pore-structure component data are derived from bulk petrophysical data (permeability, porosity, and formation factor as a function of increased pressure) reported for seven shale & mudstone samples. Basic pore-structure models and theory are also presented.


Geological Survey of Canada, Current Research (Online) no. 2000-A9

Geological Survey of Canada, Current Research (Online) no. 2000-A9
Author: R. M. Friedman
Publisher: Natural Resources Canada
Total Pages: 9
Release: 2000
Genre: Igneous rocks
ISBN: 0660180014

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Describes uranium-lead dating of zircon and titanite from two representative samples of two plutons (diorite and quartz monzonite) in the Tetachuck Lake map area of central interior British Columbia. Includes information on the geological nature & setting of the sampled plutons, analytical procedures, and geochronology. The correlation of the two plutons with the metallogenically important group of Late Cretaceous Bulkley plutonic suite is discussed.