From 1989 to 1992, the joint European Greenland Ice-core Project (GRIP) drilled through 3,029 metres (9,935 feet) of ice at Summit station in east-central Greenland before reaching bedrock.
Sources
- Greenland Ice-core Project/Greenland Ice Sheet Project 2 | geochronology | Britannica (britannica.com)
- https://essd.copernicus.org/articles/15/3351/2023/ (essd.copernicus.org)
- http://pratclif.com/climatechange/grip-final-report.htm (pratclif.com)
- https://doi.pangaea.de/10.1594/PANGAEA.55084 (doi.pangaea.de)
- http://www.nerc-bas.ac.uk/icd/grip/griplist.html (nerc-bas.ac.uk)
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