1. Education

Travertine, Salton Sea, California

Travertine Picture Gallery

By

The nubbly, even surface of the ancient Lake Cahuilla travertine may reflect the presence of extensive algae that influenced deposition of carbonate minerals.
A nubbly variety
Photo (c) 2008 Andrew Alden, licensed to About.com (fair use policy)
Top Related Searches

©2014 About.com. All rights reserved.