| abstract | - Volcanos are cony-ish mountains! Cool right? Well thats what you thought... VOLCANOS ARE KILLERS!! they kill people animals destroy building, homes and forests, etc | | | | | | BUT>>>>> THEY ALSO DO GREAT THINGS!!! OMG VVVVV make building material soil tourist attraction land, islands SO KNOW YOU KNOW VOLCANOS ARENT GOOD AND ARENT BAD!!! :)) Read important stuff down here VVVV:P For the docudrama, see Supervolcano (docudrama). A supervolcano or super volcanic eruption is a volcanic eruption with ejecta greater than 1,000 cubic kilometers (240 cubic miles), which is millions of times larger than any volcanic event in historic times. Supervolcanoes can occur when magma in the Earth rises into the crust from a hotspot but is unable to break through the crust. Pressure builds in a large and growing magma pool until the crust is unable to contain the pressure. They can also form at convergent plate boundaries (for example, Toba). Supervolcanoes are relatively new to science. The Discovery Channel has documented seven known supervolcanoes: the Yellowstone, Long Valley, and Valles Calderas in the United States; Lake Toba, North Sumatra, Indonesia; Taupo Volcano, North Island, New Zealand; Aira Caldera, Kagoshima Prefecture, Kyūshū, Japan; and the Siberian Traps, Russia. Although there are only a handful of supervolcanoes, super volcanic eruptions typically cover huge areas with lava and volcanic ash and cause a long-lasting change to weather (such as the triggering of a small ice age) sufficient to threaten the extinction of species.
|
