orogeny
nounUK /ɒˈrɒdʒəni/
US /ɔːˈrɑːdʒəni/
Orogeny is the process where the Earth's crust folds and pushes up to make mountains.
The Himalaya mountains were formed by orogeny when two land plates crashed together.
OTHER MEANINGS
2. A single episode of mountain building in a particular region.
The Appalachian orogeny happened hundreds of millions of years ago.
3. The branch of geology that studies how mountains form.
She studied orogeny to understand why the Andes are so tall.
4. The forces inside the Earth that cause rock layers to bend and rise.
Orogeny lifted the seabed high into the air, leaving fossils on the peaks.