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AGE
2
DEPTH, ice/snow
Drilling/drill rig
2
GISP
2
Greenland Ice Core Projects GRIP/GISP/NGRIP
2
Sampling/drilling ice
-
1
Accumulation of snow/ice per year
1
Accumulation rate, standard deviation
1
Carbon-14 concentration
1
Carbon-14 concentration, standard deviation
1
Estimated
1
Fraction
1
Gamma-ray spectrometry
1
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