Geology Seminar Series - Shelby Brandt: Structural Analysis of the Central Glennie Domain, Reindeer Zone, Saskatchewan, Canada

Wed., Sep. 22, 2021 4:00 p.m.

Location: https://uregina-ca.zoom.us/j/95269121193?pwd=ZEFZNmZMTXh2dUlVMXIrRjFyeVQ3UT09

Title: Structural Analysis of the Central Glennie Domain, Reindeer Zone, Saskatchewan, Canada

Speaker: Shelby Brandt, Department of Geology, University of Regina

Abstract:

Currently, the only producing gold mine in Saskatchewan is SSR Mining’s Santoy Mine situated within the Pine Lake Greenstone Belt in the central Glennie Domain. This is a structurally controlled, Paleoproterozoic, orogenic gold deposit along the Santoy splay of the Tabbernor fault. It is understood that the Tabbernor fault acts as a conduit for auriferous fluids to flow, however, it is still unclear how the complex polyphase folded bedrock surrounding said fault influences mineralization. This thesis aims to better define the structural controls on mineralization of the Gap Hanging Wall deposit at Santoy mine and fit this deposit into the structural evolution of the Glennie Domain. The thesis comes in two parts, a detailed map and model of the Gap Hanging Wall deposit as well as a broad scale analysis of the structural geology of the central Glennie Domain. The latter of which will be discussed in this talk.

The analysis covered 3 distinct map areas including Lewry’s 1977 map area in the center, the 2017-2019 map areas of Ralf Maxeiner and Samantha Van Der Kerckhove of the Saskatchewan Geological Survey to the West, and the SSR Mining property to the East. The region was separated into 32 sub-cylindrical, uniform structural domains which isolate individual fold interference patterns. Structural measurements from each domain were plotted on individual stereonets in which the fold axis and axial plane of the latter folding event were quantified.

This talk will discuss the orientations of F3 and F4, how and why they change across the area, and what this means for structurally controlled gold mineralization in the Glennie domain. It will also discuss how these orientations can be predicted using remote sensing.