Contrasting basement isotopic signatures and the palinspastic restoration of peripheral orogens: Example from the Neoproterozoic Avalonian-Cadomian belt

Abstract

Research Article| July 01, 1994 Contrasting basement isotopic signatures and the palinspastic restoration of peripheral orogens: Example from the Neoproterozoic Avalonian-Cadomian belt R. Damian Nance; R. Damian Nance 1Department of Geology, St. Francis Xavier University, Antigonish, Nova Scotia B2G 1C0, Canada Search for other works by this author on: GSW Google Scholar J. Brendan Murphy J. Brendan Murphy 1Department of Geology, St. Francis Xavier University, Antigonish, Nova Scotia B2G 1C0, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information R. Damian Nance 1Department of Geology, St. Francis Xavier University, Antigonish, Nova Scotia B2G 1C0, Canada J. Brendan Murphy 1Department of Geology, St. Francis Xavier University, Antigonish, Nova Scotia B2G 1C0, Canada Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1994) 22 (7): 617–620. https://doi.org/10.1130/0091-7613(1994)022<0617:CBISAT>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 Email Permissions Search Site Citation R. Damian Nance, J. Brendan Murphy; Contrasting basement isotopic signatures and the palinspastic restoration of peripheral orogens: Example from the Neoproterozoic Avalonian-Cadomian belt. Geology 1994;; 22 (7): 617–620. doi: https://doi.org/10.1130/0091-7613(1994)022<0617:CBISAT>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 Avalonian-Cadomian orogenic belt developed at the periphery of a Neoproterozoic supercontinent oblique to interior collisional orogenic sutures associated with supercontinent amalgamation. As a result, parts of the Avalonian-Cadomian orogenic belt are likely to have evolved upon different cratonic basements. Available Nd and U-Pb (detrital zircon) isotopic data support this contention and suggest that West Avalonia lay adjacent to the Amazonian craton during the Neoproterozoic, whereas Cadomia and, possibly, East Avalonia occupied positions adjacent to the West African craton. Such variations in basement isotopic signatures provide important information for Neoproterozoic paleogeographic reconstruction of the now-dismembered orogenic belt and may be of more general application to the palinspastic restoration of dispersed Precambrian terranes. 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.