Stable Isotopes and Debris in Basal Glacier Ice, South Georgia, Southern Ocean
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چکیده
This paper combines a study of the rock debris and 60/ 60 isotopic characteristics of basal ice sequences in three representative glaciers in South Georgia and concludes that the debris and ice has been entrained mainly by basal freezing . The size distribution of the rock debris is typical of crushing and abrasion, and reflects transport at the ice-rock interface. The 60/ 0180 relationships show that clear ice associated with the debris has accreted through freezing. The white bubbly glacier ice has 60/ 60 relationships typical of precipitation which demonstrates an altitudinal effect between glaciers .
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