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Age
Greenland Ice Core Projects GRIP/GISP/NGRIP
Sampling/drilling ice
22
AGE
21
δ18O, water
18
GISP
16
DEPTH, ice/snow
13
Depth, reference
10
Drilling/drill rig
10
Density, mass density
9
Snow pit
9
see comment
8
GRIP
7
Age model, layer counting
2
Calculated
2
ISTUK electromechanical drill
2
Layer thickness
2
Age model
1
Automatic depth gauges
1
Calculated from conductivity
1
Correction
1
Density
1
Dummy
1
Event label
1
Factor
1
Gas age
1
Hydrogen peroxide
1
Interval comments
1
Latitude of event
1
Longitude of event
1
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