18 n 19: Snowball Earth Flashcards
1
Q
What side of world was Gondwanaland on?
A
The South
2
Q
Describe evidence of Glacial existence
A
Diamictites, found with random unsorted collection of matter that could only exist by a glacier. (Sitting on top of striated pavement)
3
Q
How snowball Earth occurs
A
Continental breakup cause ocean life to flourish; use up CO2, oceans cool n freeze, biology crashes
4
Q
How warming earth occurs
A
Volcanism (n drop stones) increases CO2, little biology present consume it, climate overheats, flourishing of organisms
5
Q
How to cool earth
A
increase albedo, remove CO2 from rock weathering, block sun via ash eruption
6
Q
How to Heat earth
A
Add CO2 from basaltic eruption
Decrease albedo
