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

Geological Survey of Canada, Current Research (Online) no. 2004-A2
Author: P. Van Der Heyden
Publisher: Natural Resources Canada
Total Pages: 16
Release: 2004
Genre: Potassium-argon dating
ISBN: 0662357671

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 The analytical data were extracted from a large, mostly unpublished data set that includes uranium/lead, potassium/argon, and argon/argon geochronometry for other parts of the Anahim Lake and Mount Waddington map areas.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-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

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.