Abstract
Two deeply submerged coral reefs were sampled with the HURL submersible Pisces V off the islands of Hawaii and Maui. An ancient fringing reef at 950 m depth on the Kohala slope of Hawaii was observed from deep-towed camera photographs and during submersible operations. A second reef at 1650 m depth on the Haleakala slope of Maui was observed on side-scan images, deep-towed camera photographs and during submersible observations. Ages of the two reefs were determined by electron spin resonance dating with a signal intensity for aragonitic coral at g = 2.0007 used to ascertain the accumulated dose by the additive dose method. Uranium concentration was measured by neutron activation analysis. The chronology of the reefs indicates that drowning coincided with periods of rapid global climate change at the termination of continental glaciation at approximately 250 ka and 340 ka. The drowning events correlate with oxygen isotope stage boundaries 78 and 910. These data support models of reef drowning on subsiding volcanic edifices.
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.
