oceanic and continetal crust Flashcards
1
Q
what rock type and mineral content is oceanic?
A
- basalt
- silica and magnesium
2
Q
what rock type and mineral content is continental?
A
- granite
- silica and aluminium
3
Q
where do we find oceanic crust? continental crust?
A
oceanic = under the oceans continental = under the continents
4
Q
how old is oceanic crust? continental crust?
A
oceanic =
5
Q
which is more dense?
A
OCEANIC
oceanic = 3.9 g/cm^3
continental = 2.7 g/cm^3
6
Q
which type of crust is renewable and can be destroyed?
A
oceanic
7
Q
how deep is oceanic crust? continental crust?
A
oceanic = 6-10km continental = 70 km
