Petrology and chemistry of Guadalupe Island: An alkalic seamount on a fossil ridge crest

Abstract

Research Article| December 01, 1977 Petrology and chemistry of Guadalupe Island: An alkalic seamount on a fossil ridge crest Rodey Batiza Rodey Batiza 1Department of Earth and Planetary Sciences and McDonnell Space Center, Washington University, St. Louis, Missouri 63130 Search for other works by this author on: GSW Google Scholar Geology (1977) 5 (12): 760–764. https://doi.org/10.1130/0091-7613(1977)5<760:PACOGI>2.0.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 Rodey Batiza; Petrology and chemistry of Guadalupe Island: An alkalic seamount on a fossil ridge crest. Geology 1977;; 5 (12): 760–764. doi: https://doi.org/10.1130/0091-7613(1977)5<760:PACOGI>2.0.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 Guadalupe Island consists of two partly overlapping shield volcanoes that are overlain by a thick series of flank and fissure eruptions. The northern shield volcano is the younger of the two. Together, the shields and fissural volcanism form a complete alkali olivine basalt to trachyte series. This series is mineralogically, chemically, and isotopically similar to other such volcanic series that are characteristic of central volcanoes located on the flanks of active mid-ocean ridges. Guadalupe, however, is located on the axis of a fossil ridge crest. Its origin must therefore be considered in the context of the petrologic consequences of ridge-crest jumps and the subsequent history of abandoned ridge-crest segments. The unique tectonic setting of Guadalupe allows some constraints to be placed on viable geometric models of chemical and isotopic heterogeneities in the suboceanic upper mantle. 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.