Antarctica-New Zealand rifting and Marie Byrd Land lithospheric magmatism linked to ridge subduction and mantle plume activity

Abstract

Research Article| September 01, 1994 Antarctica-New Zealand rifting and Marie Byrd Land lithospheric magmatism linked to ridge subduction and mantle plume activity S. D. Weaver; S. D. Weaver 1Department of Geology, University of Canterbury, Christchurch, New Zealand Search for other works by this author on: GSW Google Scholar B. C. Storey; B. C. Storey 2British Antarctic Survey, Natural Environment Research Council, CB3 OET, Cambridge, United Kingdom Search for other works by this author on: GSW Google Scholar R. J. Pankhurst; R. J. Pankhurst 2British Antarctic Survey, Natural Environment Research Council, CB3 OET, Cambridge, United Kingdom Search for other works by this author on: GSW Google Scholar S. B. Mukasa; S. B. Mukasa 3Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan, 48109-1063 Search for other works by this author on: GSW Google Scholar V. J. DiVenere; V. J. DiVenere 4Lamont-Doherty Earth Observatory, Palisades, New York, 10964 Search for other works by this author on: GSW Google Scholar J. D. Bradshaw J. D. Bradshaw 1Department of Geology, University of Canterbury, Christchurch, New Zealand Search for other works by this author on: GSW Google Scholar Geology (1994) 22 (9): 811–814. https://doi.org/10.1130/0091-7613(1994)022<0811:ANZRAM>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 S. D. Weaver, B. C. Storey, R. J. Pankhurst, S. B. Mukasa, V. J. DiVenere, J. D. Bradshaw; Antarctica-New Zealand rifting and Marie Byrd Land lithospheric magmatism linked to ridge subduction and mantle plume activity. Geology 1994;; 22 (9): 811–814. doi: https://doi.org/10.1130/0091-7613(1994)022<0811:ANZRAM>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 Mid-Cretaceous igneous rocks of central Marie Byrd Land, Antarctica record a rapid change from subduction-related to rift-related magmatism. This correlates with the final stages of subduction of the Phoenix plate and the subsequent rifting of New Zealand from West Antarctica, prior to the opening of the Southern Ocean. Rift magmatism produced diverse A-type granitoids and mafic intrusive rocks of continental flood-basalt affinity that were derived ultimately from lithospheric mantle sources. Rifting was caused by changes in plate boundary forces; however, mantle plume activity may have begun in mid-Cretaceous time, triggering melting of the lithosphere and controlling the locus of rifting. 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.