What Do Mountain Belts Such as the Caledonian and Appalachian

question 60

Multiple Choice

What do mountain belts such as the Caledonian and Appalachian Mountains suggest to scientists?

• A) By uniformitarian principles, the tectonic plates may have been in different positions in the past.
• B) The theory of tectonic plate action is not sufficient to explain all mountain building.
• C) The continental lithosphere is more rigid than the oceanic lithosphere.
• D) By evaluation of the deformations, the asthenosphere is more rigid than the lithosphere.

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