Of the three types of rock, lava is falls under which type?
Lava Vesuvius between May 14 and June 4, 1737. Serao described "a flow of fiery lava" as an analogy to the flow of water and mud down the flanks of the volcano following heavy rain. The composition of almost all lava of the Earth's crust is dominated by silicate minerals, mostly feldspars, olivine, pyroxenes, amphiboles, micas and quartz. Igneous rocks, which form lava flows when erupted, can be classified into three chemical types: "felsic", "intermediate", and "mafic" (four if one includes the super-heated "ultramafic"). These classes are primarily chemical, however, the chemistry of lava also tends to correlate with the magma
Lava Canyon Falls Lava Canyon Falls Lava Canyon Falls drops 200 feet (61 meters) along the Muddy River in Skamania County, Washington. Lava Canyon Falls was formed by the 1980 eruption of Mt. St. Helens, which caused a lahar and flood which scoured out a canyon that had been filled with dirt and mud for 1,800 years. The Muddy River's course was redirected to that canyon as a result of the lahar and the floods, and it drops 1,400 feet (426 meters) in 2 miles (3.2 km). Lava Canyon Falls is the largest, 200 foot sheer drop. On the southeast side of Mount