Research Article| March 01, 1987 Use of strontium isotopes to constrain the timing and mode of dolomitization of upper Cenozoic sediments in a core from San Salvador, Bahamas Peter K. Swart; Peter K. Swart 1Laboratory for Comparative Sedimentology, Fisher Island, University of Miami, Miami Beach, Florida 33139 Search for other works by this author on: GSW Google Scholar Joaquin Ruiz; Joaquin Ruiz 2Department of Geology, University of Arizona, Tucson, Arizona 85721 Search for other works by this author on: GSW Google Scholar Charles W. Holmes Charles W. Holmes 3U.S. Geological Survey, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar Author and Article Information Peter K. Swart 1Laboratory for Comparative Sedimentology, Fisher Island, University of Miami, Miami Beach, Florida 33139 Joaquin Ruiz 2Department of Geology, University of Arizona, Tucson, Arizona 85721 Charles W. Holmes 3U.S. Geological Survey, Denver, Colorado 80225 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1987) 15 (3): 262–265. https://doi.org/10.1130/0091-7613(1987)15<262:UOSITC>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 Peter K. Swart, Joaquin Ruiz, Charles W. Holmes; Use of strontium isotopes to constrain the timing and mode of dolomitization of upper Cenozoic sediments in a core from San Salvador, Bahamas. Geology 1987;; 15 (3): 262–265. doi: https://doi.org/10.1130/0091-7613(1987)15<262:UOSITC>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 The 87Sr/86Sr ratios and the activity ratios of 234U/238U and 230Th/238U have been measured in dolomites from a 168-m-deep core taken on the island of San Salvador, Bahamas. These data suggest two periods of dolomitization. The first episode dolomitized Miocene age sediments during the latest Miocene, and the second dolomitized the Pliocene portion of the core and was still active as recently as 150 ka. The late timing of the second episode argues against penecontemporaneous models of dolomitization for the Pliocene sediments. Instead, dolomitization is favored either as a result of mixing-zone development during the large Pleistocene sea-level changes or by movement of seawater through the 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.