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Joint (geology)

earth science Maturity 7-9

Rocks can have cracks in them.

Joints (Bar Harbor Formation, Silurian-Devonian; Bar Harbor, Mt. Desert Island, Maine, USA) 2.jpg
Joints (Bar Harbor Formation, Silurian-Devonian; Bar Harbor, Mt. Desert Island, Maine, USA) 2.jpg
These cracks do not move. They can look like long lines. Some cracks make tall shapes. These shapes look like stone poles. Do you see cracks in rocks?

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File:Joints (Bar Harbor Formation, Silurian-Devonian; Bar Harbor, Mt. Desert Island, Maine, USA) 2.jpg
Joints (Bar Harbor Formation,...
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