Form 2 Β· Geography Β· CBC

πŸ”οΈ Plateaus

Explore one of Earth's most fascinating landforms β€” from how they formed millions of years ago to where we find them today.

Height Flat top (plain) Steep sides Lower surrounding land ⬆ Earth's crust uplifted ⬆

A plateau is a large, extensive uplifted part of the earth's crust which is almost flat at the top. The top of the plateau is mostly a plain. Plateaus were formed during the Mesozoic and Jurassic eras due to uplifting of the earth's crust.

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What it looks like

A plateau has steep, cliff-like sides and a wide, flat top β€” like a table raised high above the surrounding land.

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How big?

Plateaus are large and extensive β€” they can cover thousands of square kilometres, much larger than a hill or mountain top.

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When formed?

Plateaus were formed during the Mesozoic Era (252–66 million years ago) and Jurassic Era (201–145 million years ago).

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Key feature

High plateaus in tropical latitudes have cooler and more comfortable climates, making them ideal for agriculture and human settlement.

πŸ”‘ Key Terms

Uplifted

Pushed up from below by forces inside the earth

Earth's crust

The hard outer layer of the earth where we live

Plain

A flat, level area of land

Tropical latitudes

Areas near the equator, like East Africa and Brazil

Click on a plateau to learn more about it.

East African Plateau
πŸ“ Kenya, Tanzania, Uganda

One of the world's most important plateaus, home to famous game parks, highland farms, and millions of people.

🌿 Agriculture 🏑 Settlement 🦁 Wildlife
Brazilian Plateau
πŸ“ South America, Brazil

One of the largest plateaus in the world, covering most of Brazil, with rich mineral resources and rainforest edges.

⛏️ Mining 🌳 Rainforest 🌾 Farming
Tibetan Plateau
πŸ“ Asia (China/Tibet)

Known as the "Roof of the World," the highest plateau on earth with an average elevation of 4,500 metres.

πŸ”οΈ Highest plateau ❄️ Cold climate
Colorado Plateau
πŸ“ South-western USA

Famous for the Grand Canyon carved through it. Covers about 337,000 kmΒ² across four US states.

🏜️ Grand Canyon πŸͺ¨ Red rock

High plateaus, especially in tropical latitudes, are very valuable to people. Here are the main ways plateaus are used:

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Agriculture (Farming)

The cool climate and flat land of high tropical plateaus makes them ideal for growing crops. In East Africa, tea, coffee, wheat and pyrethrum grow on plateau areas of Kenya and Tanzania.

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Human Settlement

Many people prefer to live on high plateaus because the climate is cooler and healthier than in the hot lowlands. Cities like Nairobi and Addis Ababa are on plateaus.

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Favourable Climate

Plateaus in tropical areas receive good rainfall and have moderate temperatures. This makes them pleasant to live in and work on compared to hot coastal or desert areas.

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Livestock Grazing

The grasslands (savannahs) on plateau surfaces are used for cattle, sheep and goat grazing. The East African plateau supports large herds of livestock and also wildlife like wildebeest and zebra.

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Mining

Plateaus often contain valuable minerals. The Brazilian Plateau is rich in iron ore, manganese, gold and diamonds. Mining provides income and employment.