| Reference Type | Journal (article/letter/editorial) |
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| Title | A Paleomagnetic Reversal in the Osler Volcanic Group, Northern Lake Superior |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Halls, H. C. | Author |
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| Year | 1974 (September 1) | Volume | 11 |
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| Issue | 9 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e74-113Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 474194 | Long-form Identifier | mindat:1:5:474194:1 |
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| GUID | 0 |
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| Full Reference | Halls, H. C. (1974) A Paleomagnetic Reversal in the Osler Volcanic Group, Northern Lake Superior. Canadian Journal of Earth Sciences, 11 (9) 1200-1207 doi:10.1139/e74-113 |
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| Plain Text | Halls, H. C. (1974) A Paleomagnetic Reversal in the Osler Volcanic Group, Northern Lake Superior. Canadian Journal of Earth Sciences, 11 (9) 1200-1207 doi:10.1139/e74-113 |
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| In | (1974, September) Canadian Journal of Earth Sciences Vol. 11 (9) Canadian Science Publishing |
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| Abstract/Notes | A geological and paleomagnetic study in the Nipigon Strait area, northern Lake Superior, has confirmed previous conclusions drawn from aeromagnetic data, that an unconformity occurs within the Late Precambrian Keweenawan Osler volcanics and separates normally magnetized lavas from older ones with reversed polarity. The new data, together with other paleomagnetic and geological evidence from Keweenawan rocks, suggest that the magnetic reversal occurred when there was a temporary halt or decline in volcanic activity throughout the Lake Superior region. During the quiescent period, coarse clastic sediments were deposited by marginal erosion of the subsiding Keweenawan basin; sinking of the basin with corresponding uplift of the margins may have been greater in the south where the thickest sections of conglomerate and sandstone are preserved. |
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