Grand Canyon Age

GRAND CANYON GEOLOGY: Rock Layers and Stratigraphy

Grand Canyon Geology: Rock Superposition Rocks tell us about colliding continents, meandering streams and volcanic eruptions. In the case of the Grand Canyon, the multi-layered strata provide insight to the age of the Earth. Like […]

Earth Age

EARTH AGE: How Old is Earth?

Earth Age: How Old is the Planet? Geologic time seems to be a Goliath that many of us David earth scientists wrestle with. Earth is a staggering 4.5 billion years old. Despite the challenges of […]

Cambrian Explosion

CAMBRIAN EXPLOSION and Life Diversification

Life diversification from the Cambrian explosion The Cambrian explosion was the largest diversification of life in Earth’s history. Ocean life went from sparse and simple. Then, it diversified with a colossal amount of diversity. For […]