image
 
image
Museum of Western Colorado image Visit image Information image Dinosaur Digs image Trips image Programs and Events image Exhibits image Education image Support image
image

* You are Here: > Education > Geology of the Grand Valley
image




locations




Loyd Files Research Library

Geology of the Grand Valley

How was our region formed?

In ancient times, oceans and then deserts covered western Colorado. Their retreat left great deposits including sand, which compressed into sandstone. To the west of Grand Junction, the red sandstone has weathered into the canyons and elaborate formations of the Colorado National Monument. East of the Grand Valley is the vast, flat-topped Grand Mesa. Volcanic flows had covered that area, forming a protective layer of hard basalt, hundreds of feet deep. The surrounding terrain eroded away, leaving the Grand Mesa with its 10,000' elevation, forests and lakes.

Read The Geologic Story of Colorado National Monument here.

image

image
image Sitemap image Information image Contact Us image
© 2014 Museum of Western Colorado. All Rights Reserved. Design and Production by Monument Graphics Inc.