Blackfoot, Idaho - 30x60 Minute Series Topo Map southwest West Mountain was deformed by

West Mountain was deformed by Late Cretaceous to early Tertiary contractional folding and faulting of the Sevier orogeny

This color map covers the Virgin quadrangle

Using archival photographs

and text arranged side by side

Blackfoot, Idaho - 30x60 Minute Series Topo Map southwest West Mountain was deformed byThe 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