Borah Peak, Idaho - 30x60 Minute Series Topo Map Salt Lake Valley Featuring more than 750 two-color

Featuring more than 750 two-color maps

Harry and Freddie

In nearly all parts of the basin there are many thousands of net feet of Type-l and Type-ll kerogen-rich calcareous mudstones

Blacksmith

The accompanying map explanation includes geologic unit descriptions

Borah Peak, Idaho - 30x60 Minute Series Topo Map Salt Lake Valley Featuring more than 750 two-colorThe 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