mountains that formed when two continents collided are the?

Question

Himalayas
alps
appalachian mountains
teton mountains

Answer 1

Himalays formed when India/Erasian continents collided. The Alps formed when the Tethys Sea was closing and the Eurasiand/African plates collided. The Appalachians formed when the American/Eurasian plates collided and were separated when the Atlantic Ocean formed. The highlands of Scotland are the same mountain range but were on the Eurasian continent when the Atlantic Ocean formed. The Grand Teton mountains are fault block mountains, so they are the only mountain range on your list that were not formed by continental collision.

Answer 2

All of them, actually. The Himalayas are still forming (Indian plate pushing into the Eurasian plate), as are the Alps (African pushing into Eurasian). The "Tetons" are part of the Rockies and thus formed (or began forming, this doesn't happen overnight) during the Cretaceous Laramide Orogeny, at least 65 million years ago. The Appalachians are (for all practicle purposes) inactive but I'm pretty sure the last orogenic event was during the Paleozoic, over 250 million years ago.

Answer 3

Himalayas
The Himalayas are among the youngest mountain ranges on the planet. According to the modern theory of plate tectonics, their formation is a result of a continental collision or orogeny along the convergent boundary between the Indo-Australian Plate and the Eurasian Plate.

appalachian mountains
North America/Europe collision

Answer 4

The Indian sub-continent slammed into Asia millions of years ago, forming the Himalayas.

The link to the image at the bottom will help a bit...

Answer 5

himalayas

Answer 6

himalayas