Is the Grand Canyon 6 million years old?

When possible the scientists then date these rock deposits. The age of the river falls between the rocks determined to be older than the river and those determined to be younger. Through this method, scientists have estimated an age for the river, and thus the canyon through which it flows, of 5-6 million years.



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Some scientists believe that the Grand Canyon is 70 million years old. Others contend that the natural wonder is only between five and six million years old. Both are right. Scientists examined rocks from the Grand Canyon with the so-called thermo chronology method.

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By around 6 million years ago, waters rushing off the Rockies had formed the mighty Colorado River. As the plateau rose, the river cut into it, carving the canyon over time. Smaller rivers eventually cut the side canyons, mesas and buttes that are so characteristic of the canyon today.

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The mystery of the Great Unconformity What's tricky about the Grand Canyon is that the rocks in its walls seem to be missing a big part of the picture. In 1869, a man named John Wesley Powell observed that several layers of rock that should've been in the Canyon walls were not present.

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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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Over the centuries, the rocks, dirt and silt the Colorado brought down from the Grand Canyon and the rest of its vast drainage basin either settled on what are now the banks of the river or formed an immense delta at its mouth.

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Volcanic activity in the western canyon Over 150 flows of basaltic lava dammed the Colorado River at least 13 times from 725,000 to 100,000 years ago.

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How Many People Have Died at the Grand Canyon? Around 900 people have died at the Grand Canyon since the 1800's. The Grand Canyon was officially established as a National Park on February 26, 1919.

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About 12 deaths happen each year at the Grand Canyon, including from natural causes, medical problems, suicide, heat, drowning and traffic crashes. On average, two to three deaths per year are from accidental falls over the rim, park spokeswoman Kirby-Lynn Shedlowski says.

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Sixty million years ago, the Rocky Mountains and the entire Colorado Plateau, which the Grand Canyon is part of, rose up from tectonic activity. After the top layers of rock (green) eroded away, the Colorado River grew powerful and began to cut its way through the ancient rock, leaving the stunning canyon we see today.

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Grand Canyon National Park does not encompass the entire Grand Canyon. Most of it, but there's still plenty left to explore. There's still some confusion about the age of the Grand Canyon (6 million vs 70 million years old), and human beings started interacting with the park about 12,000 years ago.

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The oldest rocks exposed in the canyon are ancient, 1,840 million years old. Conversely, the canyon itself is geologically young, having been carved in the last 6 million years.

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One of the best-kept secrets of the Grand Canyon comes in the form of a gushing waterfall. Havasupai Falls has remained well-hidden thanks to the 10-mile hike it takes to reach its crystal blue waters. However, if you're ready to tackle that hike—and the 10 miles back—this destination spot won't disappoint.

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This natural landmark formed about five to six million years as erosion from the Colorado River cut a deep channel through layers of rock. The Grand Canyon contains some of the oldest exposed rock on Earth. The mile-high walls reveal a cross section of Earth's crust going back nearly two billion years.

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The Colorado River flows over 2,333 kilometers through the southwestern United States. It has been an essential source of water for the people that live by the river for thousands of years. The Colorado River cuts through the bottom of the Grand Canyon.

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You cannot walk to Africa from the Grand Canyon though unless you go up through Alaska then into Russia and all the way through Central Asia and into Africa.

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Impress Your Friends With These Fun Facts!*
  • We don't really know how old it is. ...
  • Grand Canyon creates its own weather! ...
  • There are no dinosaur bones in the canyon. ...
  • But there are lots of other fossils in the area. ...
  • There's a town down in the canyon. ...
  • We're missing 950 million years worth of rocks!


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Archeological Resources at Grand Canyon The oldest human artifacts found are nearly 12,000 years old and date to the Paleo-Indian period. There has been continuous use and occupation of the park since that time.

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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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