A note on the ice crystallography and geochemistry of a debris cone, Northern Foothills, Antarctica

Abstract An ice‐core collected in November 1996 from a debris cone near Amorphous Glacier, not far from the PNRA Terra Nova Bay Station, Antarctica, was analysed crystallographically and chemically. Based upon the shape, size and orientation of the c‐axes of the ice crystals, and the occurrence of g...

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Bibliographic Details
Published in:Permafrost and Periglacial Processes
Main Authors: Guglielmin, Mauro, Camusso, Marina, Polesello, Stefano, Valsecchi, Sara, Teruzzi, Mario
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2002
Subjects:
Amorphous Glacier
Northern Foothills
Terra Nova Bay
Antarc*
Antarctica
ice core
Permafrost and Periglacial Processes
Online Access:http://dx.doi.org/10.1002/ppp.406
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.406
https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.406
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Summary:Abstract An ice‐core collected in November 1996 from a debris cone near Amorphous Glacier, not far from the PNRA Terra Nova Bay Station, Antarctica, was analysed crystallographically and chemically. Based upon the shape, size and orientation of the c‐axes of the ice crystals, and the occurrence of gas and mineral inclusions, several different layers were distinguished. They indicate episodes of water congelation under different kinetic and thermodynamic conditions. These findings suggest the Amorphous debris cone is a frost‐heaved mound and not the product of glacier differential ablation. Copyright © 2002 John Wiley & Sons, Ltd.

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