We show that ice from the previous interglacial period MIS 5e, ka before present can be found in abundance near the surface of Taylor Glacier.
Our study paves the way for reliable radiometric dating of ancient ice in blue ice areas and margin sites where large samples are available, greatly enhancing their scientific value as archives of old ice and meteorites. At present, ATTA 81Kr analysis requires a kg ice sample; as sample requirements continue to decrease 81Kr dating of ice cores is a future possibility.
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