Late Pleistocene stable isotope record of planktonic foraminifera from ODP Site 124-769 ...

A reconstruction of late Pleistocene surface water carbon isotopic (delta13C) variability is presented from Ocean Drilling Program (ODP) site 769 in the Sulu Sea in the western tropical Pacific. The Sulu Sea is a shallowly silled back arc basin with a maximum sill depth of 420 m. Site 769 was drille...

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Bibliographic Details
Main Authors: Linsley, Braddock K, Dunbar, Robert G
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 1994
Subjects:
Online Access:https://dx.doi.org/10.1594/pangaea.729853
https://doi.pangaea.de/10.1594/PANGAEA.729853
Description
Summary:A reconstruction of late Pleistocene surface water carbon isotopic (delta13C) variability is presented from Ocean Drilling Program (ODP) site 769 in the Sulu Sea in the western tropical Pacific. The Sulu Sea is a shallowly silled back arc basin with a maximum sill depth of 420 m. Site 769 was drilled on a bathymetric high in 3643 m of water and has average late Pleistocene sedimentation rates of 8.5 cm/kyr. The oxygen isotope record (delta18O) of Globigerinoides ruber at site 769 shows a strong correlation with the SPECMAP stacked delta18O record, attesting to the continuity of sediment archive at the site. Surface delta13C displays consistent glacial-interglacial variability which averages ~0.9 per mil and has varied from 0.75 to 1.1 per mil over the last 800 kyr. Comparison to surface water delta13C records in the South China Sea and western tropical Pacific suggests that the glacial-interglacial surface delta13C variability is regional in scale. Planktonic delta13C data from ODP site 677 in the eastern ... : Supplement to: Linsley, Braddock K; Dunbar, Robert G (1994): The late Pleistocene history of surface water d13C in the Sulu Sea: Possible relationship to Pacific deepwater d13C changes. Paleoceanography, 9(2), 317-340 ...