Brian Head, Utah - 7.5 Minute Series Topo Map Utah Wall Maps a coal-bearing unit of the

a coal-bearing unit of the Mesaverde Group of Late Cretaceous age

northeastern Cache Valley

the timeline and concepts surrounding volcanic activity over the past 30 million years

only about 19 months

Brian Head, Utah - 7.5 Minute Series Topo Map Utah Wall Maps a coal-bearing unit of theThe 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