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AGE
2
Calcium cation
2
Chloride anion
2
Core
2
Drilling/drill rig
2
Event label
2
GRIP
2
Ion chromatography
Magnesium cation
2
Nitrate ion
2
Sampling/drilling ice
2
Sodium cation
2
Sulfate anion
2
Antarctica
1
DEPTH
1
DEPTH, ice/snow
1
DF
1
DRILL
1
Dome_Fuji
1
Greenland
1
ISTUK
1
ISTUK electromechanical drill
1
ice/snow
1
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