A comparison of the age and composition of the Shelburne Dyke, Nova Scotia, and the Messejana Dyke, Spain

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doi: 10.1139/e98-058
Authors:Dunn, Andrew M.; Reynolds, Peter H.; Clarke, D. Barrie; Ugidos, Jose M.
Author Affiliations:Primary:
Dalhousie University, Department of Earth Sciences, Halifax, NS, Canada
Universidad de Salamanca, Spain
Volume Title:Canadian Journal of Earth Sciences Revue Canadienne des Sciences de la Terre
Source:Canadian Journal of Earth Sciences = Revue Canadienne des Sciences de la Terre, 35(10), p.1110-1115. Publisher: National Research Council of Canada, Ottawa, ON, Canada. ISSN: 0008-4077
Publication Date:1998
Note:In English with French summary. 25 refs.; illus., incl. 2 tables, sketch map
Summary:New 40Ar/39Ar age determinations on biotite from the Shelburne dyke of Nova Scotia and from the Messejana dyke of Spain are identical at 203±2 Ma. In addition, both dykes have similar chemical compositions and probably represent similar magma sources, petrogenetic processes, and tectonic settings related to an early phase of opening of the North Atlantic Ocean.
Sections:Age determination
Subjects:Absolute age; Ar/Ar; Biotite; Chemical composition; Correlation; Dates; Dikes; Geochemistry; Igneous rocks; Intrusions; Jurassic; Lithogeochemistry; Lower Jurassic; Mesozoic; Metals; Mica group; Rare earths; Sheet silicates; Silicates; Trace elements; Canada; Eastern Canada; Europe; Iberian Peninsula; Maritime Provinces; Nova Scotia; Shelburne County Nova Scotia; Southern Europe; Spain; Cabezuela del Valle Spain; Little Harbour Nova Scotia; Messajana Dike; Shelburne Dike
Coordinates:N441000 N441000 W0642900 W0642900
N401200 N401200 W0054800 W0054800
Abstract Numbers:99M/3461
Record ID:1999036892
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute.
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