| Title | The ups and downs of the Canadian Shield: 3 - additional apatite fission-track analyses from the Musselwhite, Roberto, Meadowbank and Raglan mines, Ontario, Quebec, and Nunavut |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Pinet, N; McDannell, K |
| Source | Geological Survey of Canada, Open File 8706, 2020, 49 pages, https://doi.org/10.4095/321845  Open Access |
| Image |  |
| Year | 2020 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is related to the following
publications |
| File format | pdf |
| Province | Quebec; Ontario; Nunavut |
| NTS | 33C/09; 35H/12; 53B/09; 66H/01 |
| Lat/Long WENS | -76.1000 -76.0833 52.7167 52.6833 |
| Lat/Long WENS | -73.6667 -73.6667 61.7000 61.6833 |
| Lat/Long WENS | -90.3500 -90.3500 52.6167 52.6000 |
| Lat/Long WENS | -96.0667 -96.0667 65.0333 65.0167 |
| Subjects | geochronology; Science and Technology; Nature and Environment; craton; geological history; thermal history; burial history; erosion; thermal analyses; apatite; fission tracks; fission-track dates;
electron probe analyses; bedrock geology; lithology; metamorphic rocks; metasedimentary rocks; iron formations; greywackes; igneous rocks; intrusive rocks; gabbros; diorites; modelling; Archean; Canadian Shield; Musselwhite Mine; Roberto Mine;
Meadowbank Mine; Raglan Mine; Phanerozoic; Precambrian; Proterozoic |
| Illustrations | location maps; tables; photographs; plots; histograms; time series; models |
| Program | GEM2:
Geo-mapping for Energy and Minerals TransGEM |
| Released | 2020 02 25 |
| Abstract | The low-temperature (ca 120-60°C) thermal history of nine samples from four mines was investigated using the apatite fission-track (AFT) method. Analyses correspond to four samples from the Musselwhite
mine over a 275 m vertical interval, three from the Roberto mine over a 382 m vertical interval and one sample from both the Meadowbank and Raglan mines. AFT inverse modelling using both HeFTy and QTQt softwares yield concordant results and indicate
that a Phanerozoic heating episode was minor (< 20°C) or non-existent over the Musselwhite mine. This contrasts with previous AFT studies that document significant heating (> 20°C) due to sedimentary burial and indicates that the Canadian Shield did
not react as a single entity during the last billion years. The thermal history of samples from the Roberto and Meadowbank mines are less constrained due to the lack of 'high' (> 120°C) temperature constraints. The sample from the Raglan mine yields
the youngest central age among the samples reported in this study. |
| Summary | (Plain Language Summary, not published)
In this open file, we report the results from apatite fission track analyses that put additional constraints on the low-temperature (ca 120-60°C) thermal
history of the Canadian Shield. Results from the Musselwhite mine indicate that heating due to sediment deposition during the last 500 Ma was minor (< 20°C) or non-existent over this area, which is in contrast with previous studies in other locations
and indicates that the Canadian Shield did not react as a single entity during the last billion years. |
| GEOSCAN ID | 321845 |
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