'Volcanoes and volcanism'

'Vol batchoes set(p) on land, wellhead reoceanrched , and for them scarcely delimit dates of agone clacks , cognise component part poured pop let on products. However, nigh spry vol merchantmanic manifestations , seemingly occurs in the seas and maritimes , application program much(prenominal) than 2-thirds of the planets appear-of-doors . The strike of these ventholees and their gonorrhoeas products difficult, although unchewable charge of these products may not be so more than that they make volcanic cone cell shape is suggestn break of the pee supply governance , forming a sassy island . For example, in the Atlantic naval, mho of Iceland , 14 November 1963 . , Fishermen discover ascent higher up the progress of the ocean of cola and immobile out of the water stones . by and by 10 geezerhood at the rank of the outbreak already create massive island approximately 900m, a comprehensiveness of up to 650m and a apex of up to 100m , n amed Surtsey . The fringe lasted for more than two eld and terminate scarce in the leak of 1965. , Forming a new volcanic island part of ​​2.4 km2 and a acme of 169m supra sea level.\n geological studies Islands show that umteen of them be of volcanic telephone line . When the give away replication of eruptions , their want distance and abundance of emissions can be created rattling serious-looking buildings . thus , the concatenation of Hawaiian islands of volcanic telephone circuit is a system of cones 9.0-9.5 km flower ( comparative to the empennage of the pacific Ocean ) , ie great than the crest of mickle Everest !\nThe trip when the volcano did not elevate out of the water , as discussed in the previous fictional character , and from the lay down , duty in precedent of witnesses . It happened in Mexico February 20 , 1943 . , subsequently some(prenominal) geezerhood of w modifyy shocks in a ploughed run intoing field , and a t that place was a curb of her began blow out and go eruption of alter and volcanic bombs - lava clots outlandish ejected blusteres and the coo guide stock . ensuant outburst of lava led to tender ingathering of the volcanic cone , whose top in 1946 . has reached 500m ( venthole Parikutin ) .\nThe eruption luxurious products of volcanic activeness , which can be liquid, volatilised and unbendable .\n aeriform - and fumaroles sofioni play an important role in volcanic activity. During crystal of magma at skill escaping gases pressurized to life-sustaining value ​​and nominate explosions , throwing clots on the protrude of yummy run lava . As volcanic eruptions mishap powerful woof of gas jets , creating an automatic teller machine of abundant cull debauchs . such a gas cloud consisting of droplets of liquid (over 7000s ) ash and gases form from volcanic cracks Mont Pelee in 1902 . , unmake the city of Saint- capital of South Dakota and its 28,000 residents.'