| Reference Type | Journal (article/letter/editorial) |
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| Title | A gravity study of the Coldwell Complex, northwestern Ontario and its petrological significance |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Mitchell, Roger H. | Author |
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| Platt, R. Garth | Author |
| Cheadle, Scott P. | Author |
| Year | 1983 (November 1) | Volume | 20 |
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| Issue | 11 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e83-154Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 477729 | Long-form Identifier | mindat:1:5:477729:2 |
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| GUID | 0 |
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| Full Reference | Mitchell, Roger H., Platt, R. Garth, Cheadle, Scott P. (1983) A gravity study of the Coldwell Complex, northwestern Ontario and its petrological significance. Canadian Journal of Earth Sciences, 20 (11) 1631-1638 doi:10.1139/e83-154 |
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| Plain Text | Mitchell, Roger H., Platt, R. Garth, Cheadle, Scott P. (1983) A gravity study of the Coldwell Complex, northwestern Ontario and its petrological significance. Canadian Journal of Earth Sciences, 20 (11) 1631-1638 doi:10.1139/e83-154 |
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| In | (1983, November) Canadian Journal of Earth Sciences Vol. 20 (11) Canadian Science Publishing |
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| Abstract/Notes | Gravity studies of the Coldwell alkaline complex show that the complex is associated with a positive gravity anomaly. The anomaly indicates that a significant volume of dense material occurs below the current levels of exposure of principally felsic rocks. A new high-resolution gravity profile used to model the infrastructure of the complex shows that the felsic rocks form a 3–5 km thick layer over a differentiated basic intrusion. This intrusion is interpreted to consist of a layer of gabbro 3–5 km in thickness underlain by 3 km of peridotite and (or) pyroxenite. Intrusion of the basic magma was associated with Keeweenawan continental rifting. The presence of large volumes of basic magma supports the hypothesis that some of the Coldwell felsic rocks were derived by differentiation of a basic parent. |
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