(Table 1) Age determination of ODP Site 202-1233 ...

• Main Authors: Kaiser, Jérôme, Lamy, Frank
• Format: Dataset
• Language: English
• Published: PANGAEA 2010
• Subjects: DEPTH, sediment/rock; Age, dated; Age, dated standard deviation; Calendar age; Calendar age, standard deviation; Method comment; Reference/source; Age, comment; Composite Core; Age, 14C AMS; Age, 14C calibrated; Leg202; Joides Resolution; Ocean Drilling Program ODP; Antarctic; Fairbanks; Greenland; Reimer; The Antarctic; Antarc*; Greenland ice core; ice core; Ice Sheet
• Online Access: https://dx.doi.org/10.1594/pangaea.816371; https://doi.pangaea.de/10.1594/PANGAEA.816371

Antarctic and Greenland ice-core records reveal large fluctuations of dust input on both orbital and millennial time-scales with potential global climate implications. At least during glacial periods, the Antarctic dust fluctuations appear to be largely controlled by environmental changes in southern South America. We compare dust flux records from two Antarctic ice-cores to variations in the composition of the terrigenous supply at ODP Site 1233 located off southern Chile and known to record fluctuations in the extent of the northern part of the Patagonian ice-sheet (NPIS) during the last glacial period (Marine Isotope Stage, MIS, 4 to 2). Within age uncertainties, millennial-scale glacial advances (retreats) of the NPIS correlate to Antarctic dust maxima (minima). In turn, NPIS fluctuations were closely related to offshore sea surface temperature (SST) changes. This pattern suggests a causal link involving changes in temperature, in rock flour availability, in latitudinal extensions of the westerly winds ... : Sediment depth is given in mcd. Calibartion: "CalPal SFCP 2005" calibration curve (http://www.calpal.de); “INTCAL04” calibration curve (Reimer et al., 2004) (http://intcal.qub.ac.uk/calib/); “Fairbanks0107” calibration curve (Fairbanks et al., 2005) (http://radiocarbon.ldeo.columbia.edu/). ...