Oxygen-isotope records, age-model results and sedimentation rates of core MD88-784

• Other Authors: Department of Biological Sciences, Macquarie University (isOwnedBy)
• Format: Dataset
• Language: unknown
• Published: data.gov.au
• Subjects: Age model; Biosphere; Foraminifers; Marine Sediments; Microbiota; Neogloboquadrina pachyderma; Oceans; Oxygen Isotopes; Paleoclimate; Sedimentation; Tasman Fracture Zone; Planktonic foraminifera
• Online Access: https://researchdata.edu.au/oxygen-isotope-records-md88-784/1940184; http://data.gov.au/dataset/88a55751-16bd-4784-ba9a-bad642ce0eb8

Core MD88-784 was recovered during the French ASPARA IV cruise in 1988, aboard the Marion Dufresne. The core was located on the Tasman Fracture Zone of the Mid-Ocean Ridge, within the Polar Front Zone. \n\nIsotopic analysis was performed on tests of the planktonic foraminifera Neogloboquadrina pachyderma (200-250um), and indicate that the core contains isotope stages 1 to 3. The base of the core is found to reach the oxygen isotope stage 3-4 boundary. \n\nThe core is considered to have lost the uppermost section of the core that converts the last 3kyr against the SPECMAP stack. The results also indicate that the Holocene period has the highest rates of sedimentation observed through time. Further variations (excluding isotope-stage 1) appear to indicate that a reduction of the sedimentation rate occurred during the interglacial periods, in contrast to that of the glacials. App_1-1.pdf - http://gcmd.nasa.gov/Resources/valids/keyword_list.html - http://www.marine.csiro.au/csquares/index.html -