Age of First Marine Terrace Near Santa Cruz, California

Research Article| September 01, 1968 Age of First Marine Terrace Near Santa Cruz, California WILLIAM C BRADLEY; WILLIAM C BRADLEY Department of Geological Sciences, University of Colorado, Boulder, Colorado Search for other works by this author on: GSW Google Scholar WARREN O ADDICOTT WARREN O ADDICOTT U.S. Geological Survey, Menlo Park, California Search for other works by this author on: GSW Google Scholar GSA Bulletin (1968) 79 (9): 1203–1210. https://doi.org/10.1130/0016-7606(1968)79[1203:AOFMTN]2.0.CO;2 Article history received: 26 Jan 1968 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 WILLIAM C BRADLEY, WARREN O ADDICOTT; Age of First Marine Terrace Near Santa Cruz, California. GSA Bulletin 1968;; 79 (9): 1203–1210. doi: https://doi.org/10.1130/0016-7606(1968)79[1203:AOFMTN]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 Five species of shallow neritic Pleistocene mollusks from a central California marine terrace give these Th230/U238 ages: 88,000; 68,000; 76,000; 16,000; 100,000; 91,000 (from data in Blanchard and others, 1967). With one exception, the ages fall between 68,000 and 100,000 years. This broad grouping of ages, its general agreement with dates from elsewhere, and geologic evidence suggest that the sea was relatively high in central California sometime during this interval. 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.