Ar-Ar ages of iceberg-rafted debris from Scotia Sea IODP Site 382-U1538

• Main Authors: Bailey, Ian, Hemming, Sidney R, Reilly, Brendan T
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: 382-U1538A; 40Ar/39Ar geochronology; Age; mineral; standard deviation; Antarctic Ice Sheet; Ar-Ar; Argon-39; Argon-40; radiogenic; Calcium/Potassium ratio; Cascadia; CDRILL; Chlorine/Potassium ratio; Comment; Core drilling; DSDP/ODP/IODP sample designation; Exp328; Iceberg Alley; Ice Rafted Debris; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; IODP Expedition 382; Joides Resolution; Laser fusion; Mineral name; Pirie Basin; Run; Sample code/label; Scotia Sea; Site U1538; Southern Ocean; West Antarctic Ice Sheet; Antarctic; Pirie; Renne; Antarc*; Ice Sheet; Iceberg*; renne
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.946719; https://doi.org/10.1594/PANGAEA.946719

Ar-Ar ages of 58 individual hornblendes and micas picked from a discrete iceberg-rafted layer deposited ~1.2 Ma at IODP U1538. The layer was recovered 310.79–310.82 meters below sea floor in Hole U1538A-36X-3W. All hornblende and mica (mostly biotite) were handpicked from the 250-μm to 1-mm size fra...