Working out what happened during unconformity time gaps

'Filling the gap – picturing the unconformity ‘abyss of time’? Working out what happened during unconformity time gaps'.

This activity gives a good method of helping pupils to visualise the enormous time-spans between the upper and lower layers of unconformities. This exercise can be carried out for any unconformity in the field or on a photograph. You could superimpose the hand onto an unconformity photo of your own.
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