Abstract
Research Article| June 01, 1997 Brachiopod δ18O values do reflect ambient oceanography: Lacepede Shelf, southern Australia Noel P. James; Noel P. James 1Queen's University, Kingston, Ontario K7L 3N6, Canada Search for other works by this author on: GSW Google Scholar Yvonne Bone; Yvonne Bone 2University of Adelaide, Adelaide, South Australia 5001, Australia Search for other works by this author on: GSW Google Scholar T. Kurtis Kyser T. Kurtis Kyser 1Queen's University, Kingston, Ontario K7L 3N6, Canada Search for other works by this author on: GSW Google Scholar Geology (1997) 25 (6): 551–554. https://doi.org/10.1130/0091-7613(1997)025<0551:BOVDRA>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Noel P. James, Yvonne Bone, T. Kurtis Kyser; Brachiopod δ18O values do reflect ambient oceanography: Lacepede Shelf, southern Australia. Geology 1997;; 25 (6): 551–554. doi: https://doi.org/10.1130/0091-7613(1997)025<0551:BOVDRA>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 Although commonly used as proxies for attributes of ancient ocean waters, the δ18O values of brachiopods from modern seas are little studied. To evaluate the utility of brachiopods as recorders of regional oceanography, modern shells from the Lacepede Shelf (25 000 km2) of southern Australia were analyzed for δ18O, and the results were compared to the values of ambient seawater. Southern Ocean waters cover this area of extensive cool-water carbonate deposition, but there are distinct sectors of seasonal upwelling and lesser fluvial outflow. δ18O values of brachiopods across the environmental spectrum from 40 to 300 m water depth are in general isotopic equilibrium with surrounding seawater. Nevertheless, δ18O values from individual sample sites vary as much as 0.60‰. The area of cold-water upwelling in particular is clearly delimited by a group of high δ18O values. The range of values across this one shelf, on the order of 2.5‰, is similar to the range of values postulated on the basis of similar results for secular changes in many ancient oceans. 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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
