Hiller Mtn, Nevada - 7.5 Minute Series Topo Map assorted states A northwest -southeast trending system

A northwest -southeast trending system of faults

and is surprisingly simple to make

locally tilt strata up to 30 degrees

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Hiller Mtn, Nevada - 7.5 Minute Series Topo Map assorted states A northwest -southeast trending systemThe distinctive characteristic of a topographic map is that the shape of the Earth's surface is shown by contour lines. Contours are imaginary lines that join points of equal elevation on the surface of the land above or below a reference surface, such as mean sea level. Contours make it possible to measure the height of mountains, depths of the ocean bottom, and steepness of slopes. A topographic map shows more than contours. The map also includes