Rocky Mountains Form
About 55 MYA there was only the top of the rockies and then about 60 MYA a big amount. THen the other half was formed.
Himalayas Form
55 MYA india started breaking apart from Africa then 50 MYA it hit asaia and the force slowly pushed them together to form into what we know as the Himalayan mountains.
Ice Age
When the supercontinent Laurasia broke apart it caused oceans to shrink and expand, also continents seperated and and emerge then over a period of time they moved to current spots.