Here is the the section from the level 1 Geology achievement standard on igneous rocks. You need to know this as the exam paper will test your understanding.
|
ROCK TYPES |
||||
|
Appearance |
Silica rich |
Intermediate |
Silica poor |
Volcanic glass |
|
fine grained (volcanic) |
rhyolite pumice |
andesite |
basalt scoria |
obsidian |
|
coarse grained (plutonic) |
granite |
diorite |
gabbro |
|
Good luck with the exam next week I am sure you will all get what you deserve!
Entries (RSS)