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Mam Tor

Age Relations

The order of events based on dyke and vein cross-cutting relationships in Donegal, Ireland.

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Students

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An exercise on how to use cross-cutting relationships to constrain the sequence of events in the field.  Suitable for teachers and college (A Level) students.

Schematic diagram showing dykes and veins cutting the Donegal Granite.
Click on the image to download the pdf of the exercise on age relations.
Veins cutting Archean migmatic gneisses, Ataa West Greenland.

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