Photograph as originally submitted to this page in the Historical Marker Database www.HMdb.org. Click on photo to resize in browser. Scroll down to see metadata.

Photographer: Denise Boose
Taken: September 2, 2013
Caption: Cycle of Erosion and Deposition
Additional Description: First graphic: The 225-million-year-old Chinle Formation was buried under younger rock layers.

Second graphic: Erosion cut away younger rock layers exposing the Chinle Formation.

Third graphic: Starting eight million years ago, lakes and volcanoes reburied the Chinle Formation under the much younger Bidahochi Formation.

Fourth graphic: Recent erosion has removed most of the Bidahochi, re-exposing the Chinle Formation.
Submitted: September 29, 2013, by Denise Boose of Tehachapi, California.
Database Locator Identification Number: p255580
File Size: 0.213 Megabytes

To see the metadata that may be embedded in this photo, sign in and then return to this page.