Higgins Michael D.. (1990). A three-component composite dyke and its associated intrusion, Pointe du Criard, Québec, Canada. Dans A. J. Parker, P. C. Rickwood et D. H. Tucker (dir.), Mafic Dykes and Emplacement Mechanisms. (p. 63-68). Boca Raton, Florida, United States : CRC Press.
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Résumé
A three-metre-wide composite dyke made up of approximately equal quantities of diabase (at the rim), leucogabbro, and syenite, feeds a sill at least 50 m thick that is 98% syenite. The intrusion was initiated by a diabase dyke and this conduit was then exploitex by a leucogabbro, and finally a syenite. All components were probably derived from different magma chambers. Initiation of intrusions by dykes of low-viscosity magma, such as diabase, may be important elswhere, especially for the case of acidic magmas which may otherwise be restrained by their viscosity.
| Type de document: | Chapitre de livre |
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| Date: | 31 Août 1990 |
| Lieu de publication: | Boca Raton, Florida, United States |
| Sujets: | Sciences naturelles et génie > Sciences naturelles > Sciences de la terre (géologie, géographie) |
| Département, module, service et unité de recherche: | Départements et modules > Département des sciences appliquées > Unité d'enseignement en sciences de la Terre |
| Éditeurs: | Parker, A. J. Rickwood, P. C. Tucker, D. H. |
| Mots-clés: | Digue composite à trois composantes, intrusion, Pointe du Criard, Québec |
| Déposé le: | 10 juill. 2018 15:43 |
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| Dernière modification: | 13 déc. 2018 14:07 |
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