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Geology - Why Rocks Are Smoother Near Rivers.

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Explore more about geology through Canyon Field School @Home activities!

How Fossils Form

Fossils often form in sedimentary rocks. When layers of sediment hardened into rock, they sometimes trap the remains of animals and plants that have died. Over millions of years, these bones, shells, footprints, leaves and other remains turned into stone.

Stories in Stone

By studying fossils and comparing them to similar animals and plants that live today, scientists can find out what the environment was like before the canyon was carved.

Not all of Grand Canyon's fossils have been found in rock. Some fossils from the Ice Age have been discovered in caves, where animals and plant remains dried out and preserved over time.

Learn more about Grand Canyon geology through Canyon Field School @Home activities, partnered with the Grand Canyon Conservancy!

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Geology for Students - Grand Canyon National Park (U.S. National Park Service)

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Fossils often form in sedimentary rocks. When layers of sediment hardened into rock, they sometimes trap the remains of animals and plants that have died. Over millions of years, these bones, shells, footprints, leaves and other remains turned into stone.

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Join a game of Blooket to answer questions and compete in a fierce clash to determine who is the best and what Blook will come out victorious.