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Age
DRILL
Drilling/drill rig
14
Firn temperature gradient
GISP
14
GISP2
14
Gas age
14
Greenland
14
Holocene
14
Ice age
14
Ice core
14
Lock-in depth in ice equivalent
14
Sampling/drilling ice
accumulation rate
14
argon isotope
14
difference
14
modelled
14
nitrogen isotope
summit
temperature reconstruction
14
δ15N
14
δ15N excess
14
δ40Ar/4
14
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