What is a composite volcanoes magma made of?

Answer 1

Composite volcanoes are shaped like cones with sides having greater than 10° slopes. They are built from layers of volcanic ash and rock fragments. They often erupt explosively without warning, ejecting lava, ash, and poisonous gases.

Answer 2

Composite volcanoes are layered with various igneous rocks and minerals of different types, size, and density. Basaltic lava flows, ash, rhyolite, sulfur, and pumice are all examples of materials used to build these structures.

Answer 3

Like nearly all magma it is composed primarily of molten silicate minerals with variable amounts of dissolved gasses. In addition to silica (silicon dioxide), common substances also include magnesium oxide, iron oxide, calcium oxide, sodium oxide, and potassium oxide. There is more variability of composition in the magma of composite volcanoes than there is in in other types, primarily in the relative proportions of these oxides.

Answer 4

Rock.

^^Erupted material, to be more specific. Hardened lava, ash, rock, etc.

Answer 5

Composite volcanoes are composed of irregular layers of ash, welded tuff, lava flows, lava domes, and pumice. In some cases these may be mixed together in landslide debris.

Answer 6

The materials in a composite volcano are: overlapping layers of tephra, volcanic ash, and lava.

Answer 7

They are made up of layers of lava, volcanic ash, cinders, and other materials.

Answer 8

many layers of cinder and lavaaaaaa . (: