| Reference Type | Journal (article/letter/editorial) |
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| Title | Topography of the crustmantle interface under the Western Superior craton from gravity data |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Nitescu, B | Author |
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| Cruden, A R | Author |
| Bailey, R C | Author |
| Year | 2003 (October 1) | Volume | 40 |
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| Issue | 10 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e03-042Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 483735 | Long-form Identifier | mindat:1:5:483735:4 |
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| GUID | 0 |
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| Full Reference | Nitescu, B, Cruden, A R, Bailey, R C (2003) Topography of the crustmantle interface under the Western Superior craton from gravity data. Canadian Journal of Earth Sciences, 40 (10) 1307-1320 doi:10.1139/e03-042 |
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| Plain Text | Nitescu, B, Cruden, A R, Bailey, R C (2003) Topography of the crustmantle interface under the Western Superior craton from gravity data. Canadian Journal of Earth Sciences, 40 (10) 1307-1320 doi:10.1139/e03-042 |
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| In | (2003, October) Canadian Journal of Earth Sciences Vol. 40 (10) Canadian Science Publishing |
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| Abstract/Notes | The Moho undulations beneath the western part of the Archean Superior Province have been investigated with a three-dimensional gravity inversion algorithm for a single interface of constant density contrast. Inversion of the complete gravity data set produces unreal effects in the solution due to the ambiguity in the possible sources of some crustal gravity anomalies. To avoid these effects a censored gravity data set was used instead. The inversion results are consistent with reflection and refraction seismic data from the region and, therefore, provide a basis for the lateral correlation of the Moho topography between parallel seismic lines. The results indicate the existence of a major linear eastwest-trending rise of the Moho below the metasedimentary English River subprovince, which is paralleled by crustal roots below the granitegreenstone Uchi and Wabigoon subprovinces. This correlation between the subprovincial structure at the surface and deep Moho undulations suggests that the topography of the crustmantle boundary is related to the tectonic evolution of the Western Superior belts. Although certain features of the crustmantle boundary are likely inherited from the accretionary and collisional stages of the Western Superior craton, gravity-driven processes triggered by subsequent magmatism and crustal softening may have played a role in both the preservation of those features, as well as in the development of new ones. |
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