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#geology
#caledonian
#cambrian
#science
#plate tectonics
#mountains
#avalonia
#baltica
#the earht story
#caledonides
#mountain
#mountains
#silurian
#devonian
#iapetus
#ocean
#geology
#science
#plate tectonics
#laurentia
#baltica
#orogeny
#strength
#wales
#avalonia
#scotland
#north america
#the earth story
#caledonides
#mountain
#mountains
#silurian
#devonian
#iapetus
#ocean
#geology
#science
#plate tectonics
#laurentia
#baltica
#orogeny
#strength
#wales
#avalonia
#scotland
#north america
#the earth story
#geology
#continent
#avalonia
#plate tectonics
#poland
#england
#wales
#new england
#orogeny
#acadian
#science
#pangaea
#continental drift
#the earth story
#science
#geology
#plate tectonics
#orogeny
#caledonian
#scotland
#avalonia
#england
#laurentia
#pangaea
#scandinavia
#metamorphic
#the earth story
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