Purgatory Canyon, Arizona - 7.5 Minute Series Topo Map Shallow Groundwater Mount Nebo Wilderness

Mount Nebo Wilderness

Revised Stratigraphy and correlation of the Neoproterozoic Uinta Mountain Group

and geologic symbols

smaller hills

Pages: 41 p

Purgatory Canyon, Arizona - 7.5 Minute Series Topo Map Shallow Groundwater Mount Nebo WildernessThe 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