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Acadian remobilization of a Taconian ophiolite, Hare Bay allochthon, northwestern Newfoundland

1989; Geological Society of America; Volume: 17; Issue: 3 Linguagem: Inglês

10.1130/0091-7613(1989)017 2.3.co;2

1943-2682

Peter A. Cawood,

Paleontology and Stratigraphy of Fossils

Research Article| March 01, 1989 Acadian remobilization of a Taconian ophiolite, Hare Bay allochthon, northwestern Newfoundland Peter A. Cawood Peter A. Cawood 1Department of Earth Sciences, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X5, Canada Search for other works by this author on: GSW Google Scholar Geology (1989) 17 (3): 257–260. https://doi.org/10.1130/0091-7613(1989)017 2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Peter A. Cawood; Acadian remobilization of a Taconian ophiolite, Hare Bay allochthon, northwestern Newfoundland. Geology 1989;; 17 (3): 257–260. doi: https://doi.org/10.1130/0091-7613(1989)017 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Hare Bay fault is a major subhorizontal detachment at the base of the ophiolitic St. Anthony Complex in the Hare Bay allochthon, northwestern Newfoundland. The fault is a postmetamorphic brittle detachment that truncates footwall structures related to both initial Ordovician (Taconian) assembly of the allochthon and subsequent Silurian-Devonian (Acadian) deformation. Although previously mapped as a thrust, the fault has an extensional rather than a contractional geometry; it cuts downsection to the west in the direction of transport, and it juxtaposes a hanging-wall sequence that contains little or no Acadian deformation against a footwall sequence that was pervasively deformed during the Acadian orogeny. The St. Anthony Complex lies on the western margin of the Acadian deformed zone. Its final emplacement, through movement on the Hare Bay fault, probably occurred through extensional faulting during gravitational collapse of the Acadian mountain front. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.