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AGE
Calculated
2
DRILL
2
Drilling/drill rig
GISP
2
GISP2
2
GRIP/GISP/NGRIP
Greenland Ice Core Projects
2
Sampling/drilling ice
2
Depth
1
Elzone Particle Counter
1
Grain size
1
Particle concentration
1
Size
1
Sulfate
1
beta
1
bottom/max
1
ice/snow
1
maximum/old
1
minimum/young
1
top/min
1
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