Volcanic eruption
Describe the types of Pyroclastic materials and lava flows
Felsic magma
Pyroclastic material
Volcanic ash and dust
Pyroclastic particles that are less than 2 mm in diameter are called volcanic ash .volcanic that is less than 0.25 mm in diameter is called volcanic dust.
Lapilli
Large Pyroclastic particles that are less than 64mm in diameter are called Lapilli.
Volcanic bombs and blocks
Large clots of lava may be throw out of an erupting volcano while they are red hot. As they spin through the air they cool and develop a round or spindle shape. This Pyroclastic particles are called volcanic bombs. The largest Pyroclastic materials material known as volcanics blocks.
Lava flows
Mafic magma
Pahoehoe
Pahoehoe is the least viscous type of mafic lava it forms wrinkly volcanic rock when it cools.
Aa lava
Aa lava is more viscous than pahoehoe lava and forms sharp volcanic rock when it cools.
Blocky lava
Blocky lava is the most viscous type f mafic lava and forms chunky volcanic rock when it cools.