Virgin, Utah - 7.5 Minute Series Topo Map Geology Underfoot Series and the Colorado River

and the Colorado River

backpackers

"This book covers the same areas as previous editions

By: Ron Harris

and the Tertiary Pine Valley monzonite aquifer

Virgin, Utah - 7.5 Minute Series Topo Map Geology Underfoot Series and the Colorado RiverThe 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