Copperton, Utah - 7.5 Minute Series Topo Map Rockhounding Books Pages: 294

Pages: 294

99 indicating natural gas in the Mancos and 43 indicating gas in the Hermosa shales

ancient petroglyphs

000 foot peaks and less known hidden treasures in northwest New Mexico

Copperton, Utah - 7.5 Minute Series Topo Map Rockhounding Books Pages: 294The 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