Friday, December 3, 2010

hot blooms.............................VOLCANOES

Itz really very exciting to share some facts about volcanoes............ we all know the basic birth of
volcanoes,these are vents or pressures in the earth's crust through which magma is forced on to the surface as lava they occur most commonly along the boundaries of crustal plates ; most volcanoes lie in the belt called "the ring of fire",which runs at the end of the pacific ocean.Most volcanoes occur where two plates meet. When two plates move apart causing a gap, hot molten rock - called lava - rises up between them. This type of volcano occurs on the ocean floor and is mostly invisible. If the amount of magma is large enough, it rises above the surface of the ocean and an island is created.If two plates collide and one plate is forced beneath the other plate, the friction makes the first melt and magma rises up. Only a few volcanoes on earth are formed like this, but their eruptions are the most violent and dangerous ones. The reasons why a volcano forms may be:
•due to plumes or hot spots in the lithosphere
•as a result of subduction of the nearby lithosphere
INDONESIA IS A COUNTRY where most of thr volcanoes occur ,the geography of Indonesia is dominated by volcanoes that are formed due to subduction zones between the Eurasian plate and the Indo-Australian plate.
About 95% of active volcanoes occur at the plate subduction zones and at the mid-oceanic ridges ,the other 5% occur in areas associated with lithospheric hot spots.The volcanoes are more dangerous and wildest thing of our nature it may be due to the fact that we are using many of the poisonous gases and polluting into nature which is causing such an big destruction in the form of volcanoes, so i am here just to aware ALL OF U in this world make sure to save our nature by reduction of usage of these harmful gases.............

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