Agency Draw NE, Utah - 7.5 Minute Series Topo Map Ferron Sandstone Studies Geology Underfoot in Yellowstone Country

Geology Underfoot in Yellowstone Country will help you read the landscape the way a geologist does

Each hike description includes images from USGS topo maps with the hike clearly marked on the map

This new third edition is a major and complete update of the popular textbook:

and omissions have not been resolved

Plates: 26 pl

Agency Draw NE, Utah - 7.5 Minute Series Topo Map Ferron Sandstone Studies Geology Underfoot in Yellowstone CountryThe 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