Glen Canyon area rocks were laid down during the Mesozoic Era, a period of time that followed the interval when all Grand Canyon rock units were created. The Mesozoic Era lasted about 170 million years, from 251 to 65 million years ago. Some …
Sedona’s Red Rocks, Part 2
Next is the Hermit Formation (formerly called Hermit Shale), which contains more amounts of mudstone than sandstone and thus weathers into a broad terrace upon which much of the city of Sedona is constructed. Many of the easy or moderate trails …