Nail Candemir
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Massive dike intrusion in Spain.

One of the most amazing images of a dyke you are ever likely to see. This one is exposed in a road cutting on La Gomera,Spain& Cana.

Geology IN: The oldest known rock on Planet Earth

Fragment of Acasta gneiss The Acasta Gneiss is a tonalite gneiss in the Slave craton in Northwest Territories, Canada. The rock body .