Blackfoot, Idaho - 30x60 Minute Series Topo Map southwest and Washington County

and Washington County

The community of Saint John is along the Mormon Trail Road in the northwest part of the quadrangle

and the First Detrital Zircon (U-Pb) Ages

Using archival photographs

This color map covers the Virgin quadrangle

Blackfoot, Idaho - 30x60 Minute Series Topo Map southwest and Washington CountyThe 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