Unconformities Missing Time

Summary

This video discusses how geologists recognize physical gaps in the geologic record as represented by features known as ... PBS Member Stations rely on viewers you. To support your local station, go to to.pbs.org/DonateEons ↓ More info below ... Earth's history isn't as complete as we think... There are gaps in the geological record spanning millions, even billions, of years. In the walls of the Grand Canyon, a razor-thin line separates two rocks aged more than a billion years apart — with nothing in ... In this video, we investigate stratigraphy and the phenomenon of " This video will discuss Geologic A billion years of Earth's history are In the Grand Canyon, there is seemingly 1.2 billion years of rock and thus geologic history At the Grand Canyon, if you know where to look, you can place your hand on a line where more than a billion years of Earth's ...