New evidence for two highstands of the sea during the last interglacial, oxygen isotope substage 5e

Abstract

Research Article| December 01, 1993 New evidence for two highstands of the sea during the last interglacial, oxygen isotope substage 5e C. E. Sherman; C. E. Sherman 1Department of Geology and Geophysics, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, Hawaii 96822 Search for other works by this author on: GSW Google Scholar C. R. Glenn; C. R. Glenn 1Department of Geology and Geophysics, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, Hawaii 96822 Search for other works by this author on: GSW Google Scholar A. T. Jones; A. T. Jones 2Department of Oceanography, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, Hawaii 96822 Search for other works by this author on: GSW Google Scholar W. C. Burnett; W. C. Burnett 3Department of Oceanography, Florida State University, Tallahassee, Florida 32306 Search for other works by this author on: GSW Google Scholar H. P. Schwarcz H. P. Schwarcz 4Department of Geology, McMaster University, Hamilton, Ontario L8S 4M1, Canada Search for other works by this author on: GSW Google Scholar Geology (1993) 21 (12): 1079–1082. https://doi.org/10.1130/0091-7613(1993)021<1079:NEFTHO>2.3.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 C. E. Sherman, C. R. Glenn, A. T. Jones, W. C. Burnett, H. P. Schwarcz; New evidence for two highstands of the sea during the last interglacial, oxygen isotope substage 5e. Geology 1993;; 21 (12): 1079–1082. doi: https://doi.org/10.1130/0091-7613(1993)021<1079:NEFTHO>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 Sedimentologic, stratigraphic, and geochronologic analyses of a previously undescribed carbonate section on Oahu, Hawaii, provide new evidence for two distinct sea-level highstands on Oahu during the last interglacial period (oxygen isotope substage 5e). Whereas electron-spin-resonance and uranium-series ages (122 ±8 ka to 152 ±25 ka, and 115 ±10 ka to 160 ±15 ka, respectively) of in situ corals place the age of the deposits within substage 5e, it is the unique sequence of strata found in these exposures that reveals the two transgressions. A highstand lagoonal deposit of coral-algal bafflestone is overlain by large seaward-dipping slabs of beach-rock. The beachrock, deposited during a mid-5e regression, is in turn overlain by a second highstand lagoonal deposit. This sequence was deposited in a broad, shallow, back-reef embayment that was very sensitive to fluctuations in sea level. Elsewhere, along much of the shoreline of Oahu, an in situ coral-algal framestone (Waimanalo Formation), representing the initial 5e highstand, is erosionally truncated on its upper surface. This erosional unconformity represents the mid-5e lowstand and separates the framestone from overlying, seaward-dipping, planar-bedded grainstone and rudstone (Leahi Formation) that accumulated during the second 5e highstand. 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.