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, Lee, James, Severinghaus, Jeffrey P., Brook, Edward J.
• Format: Article in Journal/Newspaper
• Language: English; unknown
• Published: National Academy of Sciences
• Subjects: Antarc*; Antarctica; McMurdo Dry Valleys; Taylor Glacier
• Online Access: https://ir.library.oregonstate.edu/concern/articles/9c67ws393

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...