Question

The Niagara escarpment is capped by more-resistant _________ which is underlain by less resistant ___________.

Answer 1

Answer:

The escarpment is capped by relatively hard, resistant rocks of the Silurian-age Lockport Group (chiefly dolostones and limestones), which are underlain by less resistant rocks (shales and limestones, like the fossiliferous Rochester Shale).

Answer 2

Answer:

The escarpment is capped by relatively hard, resistant rocks of the Silurian-age Lockport Group (chiefly dolostones and limestones), which are underlain by less resistant rocks (shales and limestones, like the fossiliferous Rochester Shale).

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