detailed but simple description please!
2007-02-15 01:45:36 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
This is a complex question that you would like a simple answer to. First of all there are different types of eruptions as well as magnitudes of eruptions. When the molten rock is reased it can result in pyroclastics (molten rock that is ejected into the air and then solidifies), or a pseudo liquid flow that consist of heated air, heated particles that flows rapidly down the volcanoe. Ignimbrites are pumice-dominated pyroclastic flow deposits with subordinate ash.There are many historic examples, most of which are restricted to valleys emanating from summit craters. One such deposit from the 1980 eruption of Mt. St. Helens (below left) contains abundant pumice blocks at its terminus. However, there are no historic examples of the voluminous ignimbrite sheetflows associated with caldera formation. These extensive deposits can cover many thousands of square kilometers.Then ther is the ejected ash that goes into the atomoshere to deal with, its effect is dependent on the volume ejected. Water is also formed in a volcanic eruption as well as the release of a multitude of gases. Any area can be expounded on and books written, so there it is in a nut shell.
2007-02-15 03:10:14 · answer #1 · answered by Anonymous · 3⤊ 0⤋
When the magma is strewen out of the volcanic tubes into the atmosphere voids are created.They are then refilled with molten magma from the plates that are melted from pressure and heat within the earth. On the surface of the earth the lava is then cooled and weathering begins. After a period of time the lava become nutrient filled soil for plants to grow. It's a destruct-renew cycle.
2007-02-15 03:05:51 · answer #2 · answered by gin 1 · 0⤊ 0⤋
Well it depends on the type of volcanic eruption, for example, a low strength red reruption (lava and not much else) wouldnt have too much effect, but a grey (pyroclastic flows, lahar, you get the idea) can block out the sun, cause widespread devastation and inaccesible areas of towns and cities, if there are any nearby.
2007-02-15 03:30:49 · answer #3 · answered by J M 1 · 0⤊ 0⤋
somtimes the mountian can collapse causing mudslides or hudge pyroclastic flows (a hudge surge of poisionus gas and rocks traveling around 100 mph) and there are often earthquakes caused by the underground movement of the maga pressure is released to create an earthquake
2007-02-17 01:02:06 · answer #4 · answered by Jensen Ackles Girl (I Wish!) 5 · 0⤊ 0⤋
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2016-10-02 04:27:17 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The dust settles and people go on living there lives around the erupted volcano. eventually somebody remembers that a city was destroyed and they dig it up just like Pompey.
2007-02-15 02:57:28 · answer #6 · answered by U-98 6 · 0⤊ 1⤋
Earth quake in the surrounding area.
2007-02-15 02:43:13 · answer #7 · answered by S.S.KUMAR 3 · 0⤊ 1⤋
Divorce.
2007-02-15 01:53:23 · answer #8 · answered by Anonymous · 0⤊ 2⤋