COLDEX Ice Cores

Ice cores have been drilled at the Allan Hills, Antarctica during four consecutive field seasons starting in 2022. NSF COLDEX additionally also handles requests for Allan Hills ice from earlier field seasons. Currently, 27 ice cores have been drilled at various depths, collecting ice up to 6 million years old.

Available COLDEX ice core samples are curated by the National Ice Core Facility, in Denver Colorado. For information on how to request samples, please see our Sample Request page.

Explore the available ice core samples using the 🧊🔦 COLDEX Sample Finder🧊🔦.

Map of Ice Cores at Allan Hills:

Drilled ice cores and their approximate oldest ages, if known. Ages marked with an asterix (*) are preliminary, and not yet published.

Map of the Allan Hills blue ice area which includes an locations of all ice cores drilled in the area. Bottom right corner includes an inset of Antarctica with a red star indicating the location of the Allan Hills.
A table listing all of the ice cores drilled in the Allan Hills by COLDEX. Columns include the Ice Core name, year drilled, depth in meters, approximate age, and core diameter.