2 Types of Earth's Crust

2 Types of Earth's Crustに関する最新のニュースをまとめてご紹介します。関心のある方は必見です。

Now for the other half: continental crust. This is what you’re walking on right now (unless you’re reading this on a submarine).

It’s thick—up to 25 to 45 miles deep. It’s like the crust’s wise, old grandparent who’s seen it all.

It’s also lighter than oceanic crust. It’s made mostly of granite, which is full of lighter elements like silicon and aluminum.

Because it’s lighter, it floats higher on the mantle. That’s why we have continents above sea level—it’s basically a buoyancy party.

And it’s old. Some chunks of continental crust are over 4 billion years old. That’s older than the first life forms, older than the dinosaurs, older than your grandma’s secret cookie recipe.

The Drama of Collision

When two pieces of continental crust collide, they don’t sink—they crunch. This is how you get massive mountain ranges like the Himalayas.

It’s like two cars pushing against each other, except the “cars” are continents and the “crumple zone” is Mount Everest. Ouch.

PPT - Tectonic Plates PowerPoint Presentation, free download - ID:535199

This also creates earthquakes—nature’s way of reminding us that we live on a restless planet. But hey, it beats a boring, flat world.

Continental crust is also a time capsule. It holds fossils, ancient minerals, and clues about Earth’s history. Geologists basically read it like a very old, slightly crumbly book.