Landscape Explorer

Combine filters to find formations by what shaped them, where they occur, and how long they take to form.

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Grand Teton rising above its surrounding range in Grand Teton National Park, Wyoming.
Mountain Tectonic Activity

How Mountains Form

Most of the world's great mountain ranges were raised by the slow collision of tectonic plates, then sculpted into peaks and ridges by ice, water, and wind.

Examples: Himalayas (Asia), Andes (South America)

Formation timescale: Very Long (millions of years)

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Horizontal sedimentary rock layers of the Colorado Plateau at Dead Horse Point, Utah.
Plateau Tectonic Activity

How Plateaus Form

A plateau is a broad, elevated area of relatively flat land, raised largely intact by tectonic uplift or built up from repeated layers of volcanic rock.

Examples: Colorado Plateau (North America), Tibetan Plateau (Asia)

Formation timescale: Very Long (millions of years)

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Astronaut photograph of the East African Rift near Kenya's southern border.
Rift Valley Tectonic Activity

How Rift Valleys Are Created

A rift valley forms where tectonic plates pull apart, stretching and thinning the crust until a section of it drops down between parallel fault lines.

Examples: East African Rift (Africa), Rhine Rift Valley (Europe)

Formation timescale: Very Long (millions of years)

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The Great Unconformity at Colorado National Monument, where ancient granite meets much younger rock.
Landscape Concept Tectonic Activity

Why Some Natural Landscapes Take Millions of Years to Form

Natural landscapes form at wildly different speeds because rock hardness, the strength of the forces acting on it, and how continuously those forces act all combine differently from place to place, ranging from a single rockfall to tens of millions of years of mountain building.

Examples: The Grand Canyon (North America), The Himalayas (Asia)

Formation timescale: Very Long (millions of years)

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