A Structural Study of the Dogpaw Gold Deposit in the Rowan-Kakagi Greenstone Belt, Western Superior Province, Northwestern Ontario
| dc.contributor.author | Alexander, Krapf-Jones | |
| dc.date.accessioned | 2021-04-22T19:46:59Z | |
| dc.date.available | 2021-04-22T19:46:59Z | |
| dc.date.issued | 2021-04-22 | |
| dc.date.submitted | 2021-04-08 | |
| dc.description.abstract | The Dogpaw deposit is a structurally controlled gold deposit hosted in the Neoarchean, Rowan-Kakagi greenstone belt of the Western Wabigoon of the Superior Province. The Rowan-Kakagi greenstone belt consists of two metavolcanic terranes separated by the crustal-scale, Pipestone-Cameron fault zone: 1) the Kakagi Lake volcanic terrane, which hosts the Dogpaw gold deposit, and 2) the Rowan Lake volcanic terrane. A number of reported gold occurrences in the Rowan-Kakagi greenstone belt are spatially associated with the Pipestone-Cameron fault zone. Bedrock mapping along the trend of the Pipestone-Cameron fault zone in the Dogpaw-Flint Lake map area has revealed a network of faults which consists of a major, dominantly dextral, east-southeast striking deformation zone and a network of secondary faults with compatible kinematics. At the Dogpaw deposit the bulk of gold mineralization is expressed at surface as lodes of quartz-pyrite breccia veins and sheeted, quartz-carbonate veins hosted in a network of ductile to brittle-ductile, conjugate shear zones which occur at the upper succession of a layered mafic to ultramafic sill. These conjugate shear zones developed due to broadly, north-south directed compression during deformation and their distribution is controlled by the primary, textural heterogeneity of the hosting rock. These gold-hosting structures where subsequently overprinted by a subsidiary structure of the Pipestone-Cameron fault zone, the Dalby Bay shear zone, deforming the early geometry of the deposits. The Dalby Bay shear zone is interpreted as a secondary deformation zone of the Pipestone-Cameron fault zone based on compatible kinematics and identical style of deformation. Four samples were collected for LA-ICP-MS U-Pb analysis at the Dogpaw deposit. Weighted mean 207Pb/206Pb zircon ages were yielded from two samples collected from late-tectonic, quartz-feldspar porphyry dykes. These dykes crosscut both veins of high-grade gold and are themselves deformed within the boundaries of the Dalby Bay shear zone. Results from the analysis of sampled dykes provide a minimum age constraint on the timing of gold mineralization at the Dogpaw deposit at approximately 2694 to 2696 Ma. Results from the analysis of a sample collected from the hosting intrusion provides a maximum timing on gold mineralization at approximately 2717 Ma. These geochronology results, coupled with the U/Pb dating and mapping by previous workers, provides new constraints on gold mineralization, deformation and igneous activity in the Rowan-Kakagi greenstone belt. | en |
| dc.identifier.uri | http://hdl.handle.net/10012/16896 | |
| dc.language.iso | en | en |
| dc.pending | false | |
| dc.publisher | University of Waterloo | en |
| dc.subject | gold deposit | en |
| dc.subject | Rowan-Kakagi | en |
| dc.subject | Dogpaw deposit | en |
| dc.subject | structurally controlled | en |
| dc.subject | conjugate shear zones | en |
| dc.subject | competency contrast | en |
| dc.subject | gabbro pegmatite | en |
| dc.title | A Structural Study of the Dogpaw Gold Deposit in the Rowan-Kakagi Greenstone Belt, Western Superior Province, Northwestern Ontario | en |
| dc.type | Master Thesis | en |
| uws-etd.degree | Master of Science | en |
| uws-etd.degree.department | Earth and Environmental Sciences | en |
| uws-etd.degree.discipline | Earth Sciences | en |
| uws-etd.degree.grantor | University of Waterloo | en |
| uws-etd.embargo.terms | 0 | en |
| uws.contributor.advisor | Lin, Shoufa | |
| uws.contributor.affiliation1 | Faculty of Science | en |
| uws.peerReviewStatus | Unreviewed | en |
| uws.published.city | Waterloo | en |
| uws.published.country | Canada | en |
| uws.published.province | Ontario | en |
| uws.scholarLevel | Graduate | en |
| uws.typeOfResource | Text | en |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- Krapfjones_Alexander.pdf
- Size:
- 13.37 MB
- Format:
- Adobe Portable Document Format
- Description:
- Thesis after edits from editor
License bundle
1 - 1 of 1
No Thumbnail Available
- Name:
- license.txt
- Size:
- 6.4 KB
- Format:
- Item-specific license agreed upon to submission
- Description: