| Reference Type | Journal (article/letter/editorial) |
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| Title | Magnetites from a new unidentified tephra source, Banff National Park, Alberta |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Brewster, G. R. | Author |
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| Barnett, R. L. | Author |
| Year | 1979 (June 1) | Volume | 16 |
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| Issue | 6 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e79-113Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 476332 | Long-form Identifier | mindat:1:5:476332:5 |
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| GUID | 0 |
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| Full Reference | Brewster, G. R., Barnett, R. L. (1979) Magnetites from a new unidentified tephra source, Banff National Park, Alberta. Canadian Journal of Earth Sciences, 16 (6) 1294-1297 doi:10.1139/e79-113 |
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| Plain Text | Brewster, G. R., Barnett, R. L. (1979) Magnetites from a new unidentified tephra source, Banff National Park, Alberta. Canadian Journal of Earth Sciences, 16 (6) 1294-1297 doi:10.1139/e79-113 |
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| In | (1979, June) Canadian Journal of Earth Sciences Vol. 16 (6) Canadian Science Publishing |
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| Abstract/Notes | Electron microprobe examination of glass-encased magnetites present within surficial volcanic ash deposits located in Banff and Jasper National Parks revealed five distinct magnetite populations. Three of the magnetite populations represented the Mazama, St. Helens Y, and Bridge River volcanic units previously identified in this area of the Canadian Rocky Mountains. The remaining two magnetite groups are characterized by glass-encased magnetites which have titanium oxide concentrations of 11.59 and 10.33%, values considerably higher than those characteristic of either Mazama, St. Helens Y, or Bridge River volcanic units. The high-titanium magnetites are of unknown provenance, and although the section provided no means for dating these volcanic groups, their distribution within the section suggests that they are older than Bridge River, and one group may predate Mazama. |
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