What is the oldest canyon in the world?

The Grand Canyon has been carved, over millions of years, as the Colorado River cuts through the Colorado Plateau. The Colorado Plateau is a large area that was elevated through tectonic uplift millions of years ago. Geologists debate the age of the canyon itself—it may be between 5 million and 70 million years old.



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The Fish River Canyon of southern Namibia is the second largest canyon in the World after the Grand Canyon of the USA. It consists of a northern upper and a southern lower canyon.

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The Blyde River Canyon is the third largest canyon in the world, after the Grand Canyon in America and the Fish River Canyon in Namibia. It is up to 1,000 metres deep and five kilometres wide...

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The rock that makes up the canyon walls is vastly more ancient than the dinosaurs – about a billion years more ancient, in some cases – but the canyon itself probably didn't form until after the dinosaurs were long gone.

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The composition (sandstone) and presence of stromatolites indicate that this area was previously a very shallow sea. The rock layers in the Grand Canyon Supergroup have been tilted, whereas the other rocks above this set are horizontal.

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Hells Canyon, Idaho and Oregon This is the deepest canyon in North America, the canyon is 8,043 feet (2,452 meters) deep.

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The Yarlung Zangbo Grand Canyon in Tibet, a region of southwestern China, was formed over millions of years by the Yarlung Zangbo River. This canyon is the deepest in the world—at some points extending more than 5,300 meters (17,490 feet) from top to bottom.

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The oldest known rock in Grand Canyon, known as the Elves Chasm Gneiss, is located deep in the canyon's depths as part of the Vishnu Basement Rocks and clocks in at an ancient 1.84 billion years old.

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1. Grand Canyon. The Grand Canyon is located in northern Arizona and is one of the great tourist attractions in the United States. Carved over several million years by the Colorado River, the canyon attains a depth of over 1.6 km (1 mile) and 446 km (277 miles) long.

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At 277 miles (446 km) long and up to 18 miles (29 km) wide, Arizona's Grand Canyon is the largest canyon in the US.

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The name Hells Canyon is believed to come from the difficult and rugged journey through the terrain by boat. The first known reference to it as Hells Canyon is in the 1895 edition of H.W. McCurdy's “Marine History of the Pacific Northwest.”

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Antelope canyon: the most photographed canyon in America.

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Although Arizona's Grand Canyon is one of the most well-known canyons, other national parks like Canyonlands in Utah and Black Canyon of the Gunnison in Colorado features some of the steepest cliffs and oldest rock in North America.

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The combined length of the ravines makes Mexico's Copper Canyon a whopping four times larger than the Grand Canyon in the United States. In some places, it's even deeper than the Grand Canyon, with a depth of over 1 mile (1.6 km)!

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1. Hells Canyon. The deepest canyon in the United States isn't the Grand Canyon, instead, it's Hells Canyon, a 10-mile-long canyon with a maximum depth of 7,993 feet. This large canyon sits in Oregon, Idaho, and Washington.

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Artifacts recovered from the sites include stone tools, pottery, jewelry, seeds, ash from hearths and even a buffalo bone (probably traded from elsewhere). Numerous dwelling and adjacent trash midden sites were excavated and one kiva, probably used for ceremonial purposes, was discovered.

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