Boise, Idaho - 30x60 Minute Series Topo Map economic geology Smoot and L

Smoot and L

000-foot Brian Head Peak

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Utley's foreword reevaluates the account for the modern reader and establishes its his torical background

Boise, Idaho - 30x60 Minute Series Topo Map economic geology Smoot and LThe 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