Lava Flows - John Seach

Lava Flows - John Seach

Lava flows are the most common volcanic formation on earth.
Lava flows cover 70% of the earth's surface.
The following list the types of lava flows.

Aa lava	Solidified clinkery lava. The surface is sharp and broken into many pieces. Walking over this surface can be dangerous because it is like broken glass. May be described as cauliflower or rubbly.
Blocky Lava	Lava which has broken segments a metre or more across. The surface is smooth and planar.
Pahoehoe Lava	Smooth lava flows. May be described as entrail, ropy, shelly, or slab.
Toothpaste Lava	Viscous lava which is squeezed through a gap in the lava flow crust.