ROCKBANR.GIF (45562 bytes)

Scoria Rocks

SCORIA.JPG (15172 bytes)

Scoria rocks are igneous rocks which were formed when lava cooled quickly above ground. You can see where little pockets of air had been. Scoria is actually a kind of glass and not a mixture of minerals.

See how igneous rocks are formed at
Igneous Animation page.

backHARDHAT.GIF (3856 bytes)next

||| Kinds of Rocks ||| Rock Home Page ||| Expert Quiz |||