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DRILL
6
Drilling/drill rig
GISP
6
GISP2
GRIP/GISP/NGRIP
Greenland Ice Core Projects
6
Sampling/drilling ice
6
ice/snow
6
standard deviation
AGE
4
DEPTH
4
Carbon-14 concentration
2
Depth
2
bottom/max
2
top/min
2
-
1
Accelerator mass spectrometry (AMS)
1
Accumulation of snow/ice per year
1
Accumulation rate
1
Air content
1
Argon
1
Beryllium-10
1
Carbon dioxide
1
Estimated
1
Fraction
1
Gamma-ray spectrometry
1
Krypton-84/Argon-36
1
Replicates
1
Sample comment
1
Xenon-132/Argon-36
1
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