Structural history of continental margin sediments beneath the Bay of Islands Ophiolite, Newfoundland

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doi: 10.1139/e85-171
Authors:Waldron, John W. F.
Author Affiliations:Primary:
St. Mary's Univ., Geol. Dep., Halifax, NS, Canada
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, 22(11), p.1618-1632. Publisher: National Research Council of Canada, Ottawa, ON, Canada. ISSN: 0008-4077
Publication Date:1985
Note:In English with French summary. 47 refs.; illus. incl. geol. sketch maps
Summary:Deformed continental margin sediments of the Curling group underlie this ophiolite in the Middle Ordovician Taconic Humber Arm allochthon of W Newfoundland. Within it, tectonic sediment slices are separated by melange zones. Associated extensional structures include shear- and extension-fracture boudins, with cataclastic shearing of shale and boudinage of competent beds. Subsequent Acadian folding produced axial plane cleavage folds, increasing eastwards across the allochthon. [J.M.H.]
Subjects:Allochthons; Bay of Islands Ophiolite; Boudinage; Cataclasis; Continental margin; Foliation; Fractures; Interpretation; Lower Paleozoic; Melange; Metaigneous rocks; Metamorphic rocks; Ophiolite; Paleozoic; Plate tectonics; Polyphase processes; Shear zones; Structural analysis; Structural geology; Canada; Eastern Canada; Newfoundland; Humber Arm; Western Newfoundland
Coordinates:N480000 N493000 W0573000 W0583000
Abstract Numbers:86M/3666
Record ID:1986011169
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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