Big Point, Arizona - 7.5 Minute Series Topo Map SH-4C Two trenches at the Willow

Two trenches at the Willow Creek site exposed three scarp-derived colluvial wedges that are evidence of three paleoearthquakes

This well-researched biography of the life and controversial death of Robert LeRoy Parker

In this full-color edition

Inkenbrandt RELATIONSHIPS OF GROUNDWATER LEVELS TO SURFACE WATER FLUCTUATIONS AND HABITAT ASSOCIATIONS OF LEAST CHUB (IOTICHTHYS PHLEGETHONTIS) IN A GREAT BASIN SPRING COMPLEX Mark C

Big Point, Arizona - 7.5 Minute Series Topo Map SH-4C Two trenches at the WillowThe 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