The Formation of a Mountain

The Formation of a Mountain

Many mountains were formed as a result of Earth’s tectonicplates smashing together. The Earth’s crust is made up of multiple tectonic plates that still move today as a result of geologic activity below the surface.

When two tectonic plates converge, their edges can crumple kind of like an aluminum can does when you crush it. The result of these tectonic plates crumpling is huge slabs or rock being pushed up into the air. What are those called? Mountains, of course!

For example, the tectonic plates that lie underneath India and Asia crashed into each other over 25 million years ago. What happened? The Himalayas, including Mount Everest, were formed. And they’re still pushing against each other. That means the Himalayas continue to grow even today!

Mountains can also form along natural fault lines. These are places in Earth’s crust where tectonic plates grind against each other. Occasionally, two plates will grind together, resulting in one plate lifting up and tilting over. The result? A mountain range, like the Sierra Nevada mountain range in California.

One other way mountains form is as the result of volcanic activity below Earth’s surface. Sometimes molten rock called magmagets pushed up toward the surface. When that happens, it cools and forms hard rock. Eventually, the softer rock above it erodes to reveal a dome-shaped mountain below. If the magma actually breaks through to the surface, you get a volcano!

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Read more / Other Sources / Credit: | Youtube: Daniel Izzo


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