Just downstream from Glen Canyon lies Grand Canyon, a somewhat better known segment of Colorado River canyon. Grand Canyon is a profound cleft in Earth’s crust that almost always prompts questions about its creation; how long ago did it form and why …
Glen Canyon Rock Layers
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 Geologic Story – Introduction
Whether they know it or not, the 4.5 million annual visitors to Sedona come here because of the area’s spectacular geology, or to enjoy one of the many trails or cultural amenities within sight of it. The famous red rocks are the beacons that …
Continue Reading about Sedona’s Geologic Story – Introduction
Strolling Through Earth History
Trying to comprehend the vast geologic time recorded in Grand Canyon’s visible rock layers is a daunting task. A nearly two billion year span from top to bottom is enough to bewilder even the most hardened geologist. Help is arriving in the form of …