Clayton, New Mexico - 30x60 Minute USGS Topographic Map 20%Sale By: Hugh Hurlow

By: Hugh Hurlow

and the Salt-Cache Valley Salt Structure is the most prominent structure

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number of earthquakes

Clayton, New Mexico - 30x60 Minute USGS Topographic Map 20%Sale By: Hugh HurlowThe 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