Picture of the Day

Oreo Cookie Fossil Rock

December 12, 2020 ―- Archive

Macro and Micro Picture of the Day 2020-12-12
License: Creative Commons Attribution 4.0 International License.

Here is an ancient Oreo cookie fossil rock found off Larimer County Rd 47. It is much bigger than the modern Oreo cookie, so we suppose it came from the time of the dinosaurs - when all things were huge - sometime before they all died off about 65 million years ago. The creamy filling has been mineralized into quartz, and the wafers have become some kind of black rock.

Equipment used: Canon EOS Rebel T5i with a standard zoom lens (EF-S 18-55 mm).

Authors: Richard Hollos and Stefan Hollos