Radiometric 81Kr dating identifies 120,000 year old ice at Taylor Glacier, Antarctica

• Main Authors: Buizert, Christo, Baggenstos, Daniel, Jiang, Wei, Purtschert, Roland, Petrenko, Vasilii V., Lu, Zheng-Tian, Mueller, Peter, Kuhl, Tanner, Lee, James, Severinghaus, Jeffrey P., Brook, Edward J.
• Format: Text
• Language: unknown
• Published: arXiv 2014
• Subjects: Geophysics physics.geo-ph; FOS Physical sciences; McMurdo Dry Valleys; Taylor Glacier; Atta; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.48550/arxiv.1403.6201; https://arxiv.org/abs/1403.6201

We present the first successful 81Kr-Kr radiometric dating of ancient polar ice. Krypton was extracted from the air bubbles in four ~350 kg polar ice samples from Taylor Glacier in the McMurdo Dry Valleys, Antarctica, and dated using Atom Trap Trace Analysis (ATTA). The 81Kr radiometric ages agree w...