Joints sets in granite, Acadia National Park, Interpreted

There are three joints all roughly at right angles to each other, two that are steeply oriented and one that is sloping gently toward the ocean. Together they form rectangular blocks. These three are perhaps all linked in some way to each other and appear to be more evenly spaced (how will be discussed later). The fourth joint set, traced in white tends to be clustered, and may not be related to the others.

The joint set of potential concern in terms of mass wasting associated with a coastal road could be the one sloping gently toward the ocean, as this could be a good surface for sliding of large blocks, especially where undercut.

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