Schematic illustration of waterfall formation
Detailed Description
Schematic illustration of waterfall formation in which a hard rock that is more resistant to erosion is atop a softer rock that is less resistant to erosion. Source: Wikimedia (https://commons.wikimedia.org/wiki/File:WaterfallCreationDiagram.svg).
Sources/Usage
Public Domain.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.