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Title: Sedimentology and geochemistry of the driftpile, Ba-Fe-Zn-Pb mineralisation, Northeastern British Columbia, Canada
Author: Insley, Martin William
Awarding Body: Royal Holloway, University of London
Current Institution: Royal Holloway, University of London
Date of Award: 1990
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This thesis is an analysis of the stratigraphy, sedimentology and geochemistry of the Driftpile Ba-Fe-Zn-Pb mineralisation - a Famennian stratiform deposit which occurs in the folded and thrust Lower Earn Group black clastics of the western Rocky Mountains, northeastern British Columbia, Canada. The deposit contains estimated reserves of 18.1 x1 06 tonnes averaging 2.4% Pb+Zn and 1 000x1 06 tonnes barite. The study involved detailed mapping and measurement of stratigraphic sections of the Ordovician-Lower Devonian Road River Group and Mid-Late Devonian Lower Earn Group. 1 :5,000 scale mapping was carried out in areas containing mineralisation and structural and sedimentological logs made of available drill-core from Driftpile and Bear deposits. Samples were collected from both mineralised intersections and host rocks for petrographic study, geochemical analysis by ICP, AA and XRF and sulphur isotopes. The Driftpile deposit lies in the Gataga area of the Kechika Trough which forms the southern extension of the Lower to Mid Palaeozoic Selwyn Basin in the Cordilleran Miogeocline. Sedimentation was dominated by fine-grained basinal facies strata which host widespread stratiform Ba-Zn-Pb mineralisation. The area has experienced a complex tectonic history involving Early Cambrian to Mid Devonian episodic extension and contraction during the Late Jurassic to Cretaceous Columbian Laramide Orogeny. The Driftpile deposit now lies within a complex fold-thrust belt associated with penetrative cleavage and temperatures of 300°C.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available