| Title | Current research part A / Recherches en cours partie A |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Geological Survey of Canada |
| Source | Geological Survey of Canada, Paper no. 85-1A, 1985, 802 pages, https://doi.org/10.4095/120018  Open Access |
| Image |  |
| Year | 1985 |
| Document | serial |
| Lang. | English; French |
| Media | paper; on-line; digital |
| Related | This publication contains the following
publications |
| File format | pdf |
| Subjects | general geology |
| Released | 1984 12 01; 2013 04 26 |
| Abstract | The northeast-striking Kapuskasing structural zone of high-grade metamorphic rocks is not present in the 60 km wide area between Kapuskasing and Fraserdale. Amphibolite-facies orÙwgneiss occurs between
the southern Groundhog and the northern Fraserdale-Moosonee high-grade metamorphic blacks. The River southern block consists of tonalite, mafic gneiss and paragneiss metamorphosed to the granulite and upper amphibolite facies. It is in fault contact
with granite to the east and gneiss in the amphibolite facies to the west. To the north, the Fraserdale-Moosonee Block is made up of anhydrous granulite of psammitic metasedimentary and intermediate igneous composition. A pseudotachylite zone
separates the granulites from granitoid rocks and gneiss in major the amphibolite facies to the east; smaller fault zones within the block as well as between and orthopyroxene-bearing occur metasedimentary gneiss of the Quetico belt to the west. it
Within the 120 km long zone of granulites in the Quetico belt, the proportion and grain size of orthopyroxenes and garnet increases toward the east at the expense of biotite, suggesting that metamorphic grade increases toward the anhydrous granulites
of the FraserdaleM oosonee Block. Although this apparent metamorphic pattern requires further study by geothermobarometry, appears to support the model of a tilted crustal section west of the Kapuskasing it structure. |
| GEOSCAN ID | 120018 |
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