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AGE
3
Epoch
GRIP
3
Sampling/drilling ice
3
Calcium cation
2
Chloride anion
2
Diameter
2
Drilling/drill rig
2
Greenland
2
ISTUK
2
ISTUK electromechanical drill
2
Magnesium cation
2
Nitrate ion
2
Number
2
Particle concentration
2
Sodium cation
2
Standard deviation
2
Sulfate anion
2
Thickness
2
ice/snow
2
Antarctica
1
Calcium nitrate
1
Calcium sulfate
1
Carbonates
1
Core
1
DEPTH
1
DEPTH, ice/snow
1
DF
1
DRILL
1
Deduced from ion balance measurements
1
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