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Shackleton, Nicholas J; Opdyke, Neil D (2014): Age model and oxygen isotope ratios of sediment core V28-239. PANGAEA,, Supplement to: Shackleton, NJ; Opdyke, ND (1976): Oxygen-isotope and paleomagnetic stratigraphy of Pacific core V28-239, late Plicene to latest Pleistocene. In: Cline, R M & Hays, J D (eds.), Investigations of late Quaternary paleogeography and paleoclimatology. (Geological Society of American Mem.), 145, 449-464, hdl:10013/epic.43488.d001

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V28-239 core from cruise 28 of R/V Vema preserves a detailed oxygen-isotope and paleomagnetic record for all of the Pleistocene Epoch. The entire 21-m long core has been analyzed at 5-cm intervals. Glacial stage 22, above the Jaramillo magnetic event, may represent the first major Northern Hemisphere continental glaciation of middle Pleistocene character. Prior to this, higher frequency glacial events extend to near the level of the Olduvai magnetic event. Glacial events of less regular frequency extend ot the bottom of the core, which represents late Pliocene time. Fluctuations in carbonate dissolution intensity occur throughout the core with a similar frequency of the oxygen-isotope fluctuations.
Latitude: 3.250000 * Longitude: 159.180000
Date/Time Start: 1971-05-09T00:00:00 * Date/Time End: 1971-05-09T00:00:00
V28-239 * Latitude: 3.250000 * Longitude: 159.180000 * Date/Time: 1971-05-09T00:00:00 * Elevation: -3490.0 m * Recovery: 21.39 m * Campaign: V28 * Basis: Vema * Method/Device: Piston corer (PC)
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