The reason I do this one first is that you may hit the sides of the. intake flange with the collet, leaving some small gouges in the material â see the second picture below. Doing the. inside cut first allows you to remove any collet gouges in the second cut that opens the runner side.
Composite Volcano. A composite volcano forms in subduction zones when a crustal plate is forced into the mantle and begins to melt. Andesite, dacite and rhyolite lavas are the primary types of lava that form these volcanoes.Eruptions on the volcanoes often alternate between tephra and lava flows. Subduction zone volcanoes.Geologists often use the term stratovolcanoes to describe the mountains that form in subduction zones.he melting oceanic crust forms pools of molten rock in a magma chamber. The magma, molten rock, in the magma chamber is lighter than the volcano rocks that surround it. The magma works its way to the summit where it erupts as tephra or in thick lava flows. Lava eruptions on stratovolcanoes.
1 Composite volcanoes are made up of alternating layers of lava and ash (other volcanoes just consist of lava). 2  They are usually found at destructive [destructive boundaries: The boundary of two plates which are moving towards each other.