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1.75 Ga
1
2.68 Ga
1
Akilia Controversy
1
Archaean age
1
Geology
1
Metamorphic zircon
1
Multiple episodes
1
SW Greenland
1
SW Greenland Field relations
1
biogenic graphite
1
deformation fabrics
1
geochronological evidence questions interpretations
1
mafic
1
protolith interpretation
1
tonalitic gneiss
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