Flow structure and laminar flow in bostonite dykes at Armidale, New South Wales
By: Spry, Alan
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Material type: 
ArticleDescription: 248-256pp ; Illustration.Subject(s): Flow structure - Bostonite dykes - Armidale - New South Wales | Laminar flow - Bostonite dykes - Armidale - New South Wales | Permian granite - New South Wales | Petrology - New South Wales
In:
Geological magazine : Vol. 90 Iss. 1-6 Year. 1953Summary: Abstract
West of Armidale occur a number of dykes which intrude Woolomin Group greywackes and which are genetically associated with Permian granite. The rocks are similar to bostonites and quartz-bostonites and show remarkably developed flow structures which indicate the condition of the magma at the time of intrusion. It is shown that intrusion probably took place by laminar flow despite the occurrence of a pseudo-turbulent structure in one dyke and it is suggested that evidence of turbulent flow is unlikely to be preserved in intrusions even if such flow did occur.
| Item type | Current location | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Article
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Library and Information Centre Periodical Section | Bound Journal Collection | Not for loan | 002541_42 | ||
Serials/Scientific Journal
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Library and Information Centre Periodical Section | Bound Journal Collection | 550 GEO (Browse shelf) | Available | 002541 |
Abstract
West of Armidale occur a number of dykes which intrude Woolomin Group greywackes and which are genetically associated with Permian granite. The rocks are similar to bostonites and quartz-bostonites and show remarkably developed flow structures which indicate the condition of the magma at the time of intrusion. It is shown that intrusion probably took place by laminar flow despite the occurrence of a pseudo-turbulent structure in one dyke and it is suggested that evidence of turbulent flow is unlikely to be preserved in intrusions even if such flow did occur.
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