Show simple item record

dc.contributor.authorJellicoe, Katia 15:42:01 (GMT) 15:42:01 (GMT)
dc.description.abstractIsland Gold is a currently producing mine on the high-grade orogenic Island Gold deposit in northern Ontario. It is located within the southern domain of the regional Goudreau Lake Deformation Zone (GLDZ), which trends east-west through the Michipicoten greenstone belt of the Wawa-Abitibi terrane. The study area encompasses the Island Gold deposit and is located along the northern limb of the Goudreau Anticline, a regional-scale fold attributed to D1 deformation. D2 consists of regional greenschist-facies metamorphism, camp-scale F2 folds, associated steep axial-planar foliation S2, moderately to steeply east-plunging stretching lineation L2a, and sub-horizontal slickenside striations L2b. D3 structures are camp- and outcrop-scale F3 folding, which deforms S2 foliation into shallowly-plunging Z-folds, weakly developed axial-planar cleavage S3, and brittle reverse faults. The Island Gold deposit forms a mineralized corridor south of the trondhjemitic Webb Lake Stock intrusion. The main Lochalsh, Island, Island Deep, and Extension 1 and 2 Zones consist of steeply dipping, subparallel ore zones of laminated V1 quartz veins and V2 veinlets within a silicic-sericitic alteration package. V3 conjugate quartz-carbonate extensional veins cross-cut V1 and V2 ore veins. Offset to the north of the main zones is the Goudreau Zone, which contains both sub-vertical and sub-horizontal ore zones with VGD ore veins. All pre-existing vein sets and structures were overprinted by V4 tourmaline veins. U-Pb zircon geochronology analyses from this study place the age of the mineralized Webb Lake Stock at 2724.1±4.3 Ma and the age of the post-mineralization I2M intrusion at 2672.2±3.5 Ma, which constrain the upper and lower absolute limits on timing of mineralization. Youngest detrital zircon ages from the overlying Doré metasedimentary rocks, which show D2 greenschist-facies metamorphism, further constrain this timing to between 2680±3 Ma and 2672.2±3.5 Ma. The GLDZ formed during D2 deformation along a major lithologic contact. The Island Gold deposit V1 and V2 ore veins were emplaced sub-parallel to S2 foliation along a strain shadow created by the Webb Lake Stock during D2 north-side-up, sinistral transpression. Subsequent D3 deformation folded and sheared the ore zones and V3 veins were emplaced in areas of high competency contrast.en
dc.publisherUniversity of Waterlooen
dc.subjectorogenic golden
dc.subjectstructural geologyen
dc.subjectArchean golden
dc.titleStructural Controls and Deformation History of the Orogenic Island Gold Deposit, Michipicoten Greenstone Belt, Ontarioen
dc.typeMaster Thesisen
dc.pendingfalse and Environmental Sciencesen Sciencesen of Waterlooen
uws-etd.degreeMaster of Scienceen
uws.contributor.advisorLin, Shoufa
uws.contributor.affiliation1Faculty of Scienceen

Files in this item


This item appears in the following Collection(s)

Show simple item record


University of Waterloo Library
200 University Avenue West
Waterloo, Ontario, Canada N2L 3G1
519 888 4883

All items in UWSpace are protected by copyright, with all rights reserved.

DSpace software

Service outages