Appekunny Formation Photos

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The formation is primarily mudstone and siltstone deposited in a shallow sea during the Proterozoic. Not far from the eastern entrance to the Going-to-the-Sun Road at St. Mary, Montana, the formation can be easily seen on the slopes of Singleshot Mountain. The Appekunny Formation contains bedding structures which may include the remains of the…
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Appekunny Formation - Glacier - USA