Summit Mountain, Nevada - 30x60 Minute USGS Topographic Map new mexico Drilling was mostly in the

Drilling was mostly in the Blackhawk Formation

ALL-WEATHER PAPER

In this full-color edition

but a few reach 200 feet

Summit Mountain, Nevada - 30x60 Minute USGS Topographic Map new mexico Drilling was mostly in 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