Lava flows

Lava hangs are streams of molten rock that pour or quiet ecstasy from an erupting vent. Lava is erupted during either non detonative activity or explosive lava fountains. Lava flows smash everything in their way, but most move lento plenty that people lavatory move out of the way. The fixedness at which lava moves across the ground depends on several factors. . quality of lava erupted and its viscosity . suddenness of the ground oer which it travels . whether the lava flows as a broad sheet, by means of a confined blood, or down a lava tube . browse of lava production at the vent Fluid basalt flows jackpot extend tens of kilometers from an erupting vent. The leading edges of basalt flows mountain travel as fast as 10 km/hour on steep slopes but they typically climb up slight than 1 km/hour on engaging slopes. But when basalt lava flows are confined within a maneuver or lava tube on a steep slope, the principal(prenominal) trunk of the flow can reach velocitie s >30 km/hour. gluey andesite flows move only a few kilometers per hour and seldom extend more than 8 km from their vents. Viscous dacite and rhyolite flows a good deal form steep-sided mounds called lava domes over an erupting vent.

Lava domes often lift by the gibbosity of many individual flows >30 m thick over a period of several months or years. Such flows exit overlap one another and typically move less than a few meters per hour. Everything in the path of an advancing lava flow will be knocked over, surrounded, or interred by lava, or ignited by the extremely acerbic temperature of lava. When lava erupts beneath a glacier or flows over snow and glass, meltwater from the ice and snow can result in far-reaching laha! rs. If lava enters a embody of water... If you want to go about a full essay, grade it on our website: OrderEssay.net

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