To describe pyroclastic materials and lava.
Types Of Mafic Lava.
Least viscous type of mafic lava and forms wrinkly rock when it cools
More viscous and forms sharp volcanic rock
The most viscous mafic lava and forms chunky rock
Type Of Pyroclastic Material
Volcanic ash is less than 2mm and volcanic dust is less than 64mm in diameter
Lapillis generally fall near the vent
They spin trough the air and cool making a round or spindle shape.