Island-Arc Structure Interpreted from Aeromagnetic Data Near Puerto Rico and the Virgin Islands

Abstract

Research Article| February 01, 1966 Island-Arc Structure Interpreted from Aeromagnetic Data Near Puerto Rico and the Virgin Islands ANDREW GRISCOM; ANDREW GRISCOM U. S. Geological Survey, Menlo Park, California Search for other works by this author on: GSW Google Scholar WILBURT H GEDDES WILBURT H GEDDES U. S. Naval Oceanographic Office, Washington, D. C. Search for other works by this author on: GSW Google Scholar Author and Article Information ANDREW GRISCOM U. S. Geological Survey, Menlo Park, California WILBURT H GEDDES U. S. Naval Oceanographic Office, Washington, D. C. Publisher: Geological Society of America Received: 28 Sep 1964 Revision Received: 23 Jul 1965 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1966, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1966) 77 (2): 153–162. https://doi.org/10.1130/0016-7606(1966)77[153:ISIFAD]2.0.CO;2 Article history Received: 28 Sep 1964 Revision Received: 23 Jul 1965 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation ANDREW GRISCOM, WILBURT H GEDDES; Island-Arc Structure Interpreted from Aeromagnetic Data Near Puerto Rico and the Virgin Islands. GSA Bulletin 1966;; 77 (2): 153–162. doi: https://doi.org/10.1130/0016-7606(1966)77[153:ISIFAD]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 SocietyGSA Bulletin Search Advanced Search Abstract A contoured aeromagnetic map of the Muertos Trench, Puerto Rico–Virgin Islands Platform, Puerto Rico Trench, and outer ridge provides new information concerning the structure of this region. The lithology, age, and structure of magnetic rocks north of the Puerto Rico Trench may be similar to those of the pre-Oligocene rocks of Puerto Rico. There appears to be no major fault on the north side of the Puerto Rico Trench. A major fault (possibly a thrust fault) with a vertical separation of at least 2 km is buried beneath the middle Tertiary and younger sedimentary rocks of the north side of the Puerto Rico–Virgin Islands Platform. The magnetic patterns are consistent with an origin by block faulting for the Anegada Passage and the Virgin Islands Basin. There is a possible chain of submarine volcanoes south of and parallel to the Puerto Rico–Virgin Islands Platform. 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.