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Category:	All Categories>topics>Earth characteristics>geologic structure>structure contours
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Here are some USGS Web pages with more information on structure contours and Anywhere:

Seismic properties of North America and the surrounding ocean basins Presetation of maps of the seismic properties of North America and the surrounding ocean basins compiled from seismic refraction and reflection data, earthquake studies, and surface wave analyses showing crustal thickness and geologic provinces. (Score: 0.811)

Southern California Mapping Project (SCAMP) Description of the SCAMP project to produce geologic and geophysical maps and reports that describe the geologic setting and geologic history of southern California. (Score: 0.484)

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About structure contours:

Definition: Two-dimensional portrayals of structural surfaces such as formation boundaries or faults. [Adapted from Glossary of Geology, 4th ed.]

Used for: depth-to maps, thickness maps