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A map showing the distribution of rocks, identified using a key.

A geological map shows the distribution of rocks. A geological cross-section adds a side-on view of the rocks beneath the land.

A map showing the distribution of rock units and, depending on its detail, geological structures such as faults.

A geological map adds information about the rocks and structures that help explain those landforms.

Zooming in on a geological map does not increase the accuracy of its underlying data.

A map showing the distribution of rocks, identified using a key.

A geological map shows the distribution of rocks. A geological cross-section adds a side-on view of the rocks beneath the land.

A map showing the distribution of rock units and, depending on its detail, geological structures such as faults.

A geological map adds information about the rocks and structures that help explain those landforms.

Zooming in on a geological map does not increase the accuracy of its underlying data.

Geological map