Iceberg-Rafted Debris data from South Atlantic for study of Antarctic Ice Sheet stability over last ~500 kyrs ...

• Main Authors: Teitler, Lora, Warnke, Detlef A, Venz, Kathryn A, Hodell, David A, Becquey, Sabine, Gersonde, Rainer, Teitler, Winston
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Antarctic ice sheet stability; iceberg rafted debris; ODP 177-1090; ODP TN0576-PC4; Event label; Sample code/label; Section; Depth below top of section; DEPTH, sediment/rock; Size fraction 2-0.250 mm, coarser sand; Number of subsamples; Quartz; Feldspar; Mafic minerals; Lithic grains; Lithic grains, volcanic; Tephra or volcanic ash; Diatoms; Foraminifera, planktic; Foraminifera, benthic; Radiolarians; Grains, other; Grains, counted/analyzed; Garnets, presence/absence; Dictyocoryne profunda, presence/absence; Sample comment; Iceberg rafted debris grains, total, in subsample; Iceberg rafted debris index; AGE; Sedimentation rate; Iceberg rafted debris grains/total grains ratio; Accumulation rate, mass; Accumulation rate, apparent mass; Sample, dry mass; Iceberg rafted debris grains per unit dry mass; Iceberg rafted debris, mass, minimum; Iceberg rafted debris, mass, per unit dry mass; Fragmentation; Foraminifera; Volcanic grains, total, in subsample; Drilling/drill rig; Piston corer; DSDP/ODP/IODP sample designation; IODP Depth Scale Terminology; Counted; Calculated; Adopted from Hodell et al. 2000; Venz and Hodell 2002; Adopted from Hodell et al., 2001; Leg177; Joides Resolution; Agulhas Basin; Antarctic; The Antarctic; Antarc*; Ice Sheet; Iceberg*
• Online Access: https://dx.doi.org/10.1594/pangaea.948709; https://doi.pangaea.de/10.1594/PANGAEA.948709

This database contains the data resulting from a study of Antarctic Ice Sheet history, over the last ~500 thousand years. Iceberg-rafted debris (IRD), considered as an indicator of the presence of a continental ice sheet in the source area, is counted and analyzed in relation to the other components of the studied size fraction. The study materials are derived from two cores raised from a deep-water marine site in the southeastern Atlantic Ocean: the piston core TN057-6-PC4 and the associated drill core from the Ocean Drilling Program (ODP) Leg 177 Site 1090 (177-1090). Because the top portion of the 177-1090 drill core was apparently disturbed by the drilling, the piston core TN057-6-PC4 has been used to represent the most recent part of the record. The site is located at ~43 deg S, 9 deg E, about 2/3 of the way from the Antarctic coast to South Africa. The location from which both cores were raised is on the southern slope of the Agulhas Ridge, on the northern edge of the Agulhas Basin, in the southeastern ...