3-D mantle structure of the Superior craton / D.B. Snyder, A. Vaillancourt, B.A. Kjarsgaard, G. Savard, and E.A. de Kemp. : M183-2/8756E-PDF
"New 3D multi-azimuthal receiver function analysis identified four regional seismic discontinuities dipping at 7–13° within the mantle of the Superior craton of North America; most are discordant to known major upper crustal structures. Widely observed crustal-scale structures with near vertical axial planes striking east-west indicate that the most recent and dominant phase of folding and horizontal shortening strain occurred during the Kenoran (D2) crustal deformation concurrent with Au mineralization and peak metamorphism at 2.72–2.66 Ga. Two mantle discontinuities strike 065° and 249°, dipping to the southeast and northwest, respectively. These strike roughly parallel the northern margin of the Superior craton and some intra-cratonic features such as the axis of the Quetico Basin"--Abstract, page 1.
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publications.gc.ca/pub?id=9.934429&sl=1
| Ministère/Organisme | Geological Survey of Canada, issuing body. |
|---|---|
| Titre | 3-D mantle structure of the Superior craton / D.B. Snyder, A. Vaillancourt, B.A. Kjarsgaard, G. Savard, and E.A. de Kemp. |
| Titre de la série | Open file, 2816-7155 ; 8756 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Includes bibliographical references (pages 13-15). |
| Information sur la publication | [Ottawa] : Geological Survey of Canada, 2024. ©2024 |
| Auteur / Contributeur | Snyder, D. B., author. |
| Description | 1 online resource (16 pages) : charts, maps. |
| ISBN | 9780660704470 |
| Numéro de catalogue |
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| Descripteurs | Cratons -- Canada. Cratons -- Canada. Canadian Shield. Bouclier canadien. |
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