Fold Mountains

What are anticlines and synclines?

Anticlines are upfolds and synclines are downfolds.

How are fold mountains formed?

Two plates collide. The heavier plate subducts under the lighter plate, into the mantle. The lighter plate then buckles into a series of folds.

What happens if a continential plate collide with a continential plate?

The two plate collide as usual, but neither plate subducts. They both buckle and fold upwards into a series of folds. e.g. Indian plate collision with the Eurasian plate.

Name an example of a destructive plate boundary in where fold mountains are formed.

The Andes( Nasca Plate (heavier) collided with South American plate (lighter) ).

When did Alpine folding occur(example)?

30-35 million years ago; example: Andes, Alps, Himalayas, Rockies.

When did Armorican folding occur(example)?

250 million years ago; example: MacGillycuddy Reeks, Galtees, Comeragh Mountains.

When did Caledonian folding occur(example)?

400 million years ago; example: Wicklow and Mourne Mountains.

When were some of the mountains in Ireland formed?

MacGillycuddy Reeks, The Galtees and Comeragh mountains were formed 250 million years ago; Wickow ad Mourne Mountains were formed 400 million years ago.

Explain how people have adapted to mountains,

People have adapted to mountains through agriculture and tourism.

Explain why tourism is important is mountains.

Tourism in mountains provide employment for the local people and they can also be indirectly employed.