Earth Biography Flashcards
1
Q
began with the formation of Earth by planetesimal accretion
A
The Hadean Eon
2
Q
The archean eon
A
forming continental crust
3
Q
Proterozoic eon
A
First life (Before life during the Archean was discovered)
4
Q
90% of Earth’s continental crust had formed by…
A
the middle Proterozoic
5
Q
Rapid evolutionary diversification
A
The Cambrian Explosion
6
Q
The Devonian is known as
A
“The age of the fishes”
7
Q
What are the 3 pulses of the
Appalachians called?
A
- Taconic orogeny
- Acadian orogeny
- Alleghenian orogeny
