The size of the Great Unconformity also differs across the canyon, with a smaller gap to the east, Peak said. At its smallest, the gap covers about 250 million years. At its largest, 1.2 billion ...

This rock exposes the Great Unconformity, where 1.1 billion-year-old Pikes Peak granite is topped with 510 million-year-old sandstone outside of Manitou Springs, Colorado.

Taking place in Queenstown on palawa Country, on lutruwita/Tasmania’s remote West Coast, The Unconformity has announced its ...

An unconformity might mean that no new material was deposited at this place for a long time, interrupting the rock sequence. But this isn't always the case. Usually unconformities are made when an ...

More Unconformity between the metamorphic Proterozoic basement complex and the Paleozoic sediment strata. Annie Scott/USGS "There's more than a billion years that's gone," Peak said.

When the famed explorer John Wesley Powell bumped, splashed and thrashed his way down the Colorado River in 1869, he discovered one of the most striking geologic features on Earth.

F3 Uranium Corp (TSXV: FUU) (OTCQB: FUUFF) ("F3" or "the Company") is pleased to announce that geochemistry results from re-logging and maiden geochemical analysis of historic holes on the Broach ...

The Great Unconformity was first described by John Wesley Powell during a boat expedition in 1869 along the Colorado River, which carved Arizona's Grand Canyon.

Las Vegas locals began a project in the 1990s to protect a geological marvel at the edge of town. They made educational signs and were joined by politicians including late Sen. Harry Reid and then ...

The Great Unconformity Exploring the Grand Canyon in 1869, geologist John Wesley Powell noticed a gap in ages between layers of rock. Sitting on top of rocks aged 1.4-1.8 billion years old was ...

Unconformity festival The Falls, by Halcyon Macleod and Finegan Kruckemeyer , tells a story of young love, separation and return. It is a moving work, quite literally, as the audience dons ...