Jackson Lake, Wyoming - 30x60 Minute USGS Topographic Map Basic Illustrated Geological Survey Miscellaneous Investigation Series

Geological Survey Miscellaneous Investigation Series Map I-1997

an area made famous by Butch Cassidy and the Wild Bunch

OG-21 Petroleum geology of the Harley Dome field

6 mil laminate which makes the paper much more durable and resistant to the swelling and shrinking caused by changes in humidity

Jackson Lake, Wyoming - 30x60 Minute USGS Topographic Map Basic Illustrated Geological Survey Miscellaneous Investigation SeriesThe 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