The 18O, D composition, and 3H activity was measured in subglacial discharge samples collected during the summer of 1995 from vents along the margin of the Matanuska Glacier, Alaska. Application of a simple open two-component reservoir model indicates that 18δO, δD, and 3H activity for discharge are within the requisite ranges to form basal ice, and that there is a genetic relationship between the two. Additionally, the temporal variability of δ18O in the basal ice can be attributed to relative amounts of meltwater and rainfall runoff present in the subglacial discharge.
|Original language||English (US)|
|Number of pages||8|
|Journal||Special Paper of the Geological Society of America|
|State||Published - Jan 1 1999|
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