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Drilling/drill rig
18
GISP
GISP2
18
Gas age
Ice core
Sampling/drilling ice
18
DRILL
16
Age
14
Firn temperature gradient
14
Greenland
14
Holocene
14
Ice age
14
Lock-in depth in ice equivalent
14
accumulation rate
14
argon isotope
14
difference
14
modelled
14
nitrogen isotope
14
summit
14
temperature reconstruction
14
δ15N
14
δ15N excess
14
δ40Ar/4
14
WAIS Divide
4
δ18O
3
Analyst
2
Clumped isotopes
2
Core
2
DATE/TIME
2
DEPTH, ice/snow
2
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