Evanston, Wyoming - 30x60 Minute USGS Topographic Map Kayaking The Great Salt Lake Astrobleme

The Great Salt Lake Astrobleme

A transect across this quadrangle and the Wales quadrangle just to the east shows the sedimentary and structural record of the region prior to and during the Sevier orogeny

Meteorites are by definition extraterrestrial objects that landed on Earth

The recent activity shown on this map provides only a present-day snapshot of Earth's long history

Evanston, Wyoming - 30x60 Minute USGS Topographic Map Kayaking The Great Salt Lake AstroblemeThe 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