Essays Tagged: "Magma"

Volcanos: types, formation, elements, activity in different parts of the worl

s that may erupt from a volcano are; 1. lava, 2. rockfragments, and 3. gas.LavaLava is the name for magma that has been released onto the Earth's surface. Whenlava comes to the Earth's surface, it is ... it leaves a tunnel.Rock FragmentsRock fragment are usually called tephra and are formed from sticky magma. Thismagma is so sticky that its gas can not easily escape when the magma approaches thesurfac ...

(5 pages) 137 0 4.6 Jan/1996

Subjects: Science Essays > Earth Sciences > Geography

Volcanoes and People: There is another submitted essay that was posted by me that had not been correctly pasted. Here is the full essay. It discusses Volcanoes, the effect on people and vica verca.

e, etc., are discharged. More specifically a volcano is a vent in the Earth from which molten rock (magma) and gas erupt. The molten rock that erupts from the volcano forms a hill or mountain around t ... them work in different ways. The form of a volcano is determined by the ingredients of the erupting magma. Their shapes are determined by the explosivity of the eruptions and the amount of water in th ...

(4 pages) 67 0 4.6 Jan/2003

Subjects: Science Essays > Earth Sciences > Geography

An active super volcano lying underneath Yellowstone Nation Park.

olcano that will produce a huge catastrophic eruption and has a giant caldera. A caldera forms when magma rises from the mantle to create a boiling reservoir in the Earth's crust. This makes a chamber ... iling reservoir in the Earth's crust. This makes a chamber of boiling hot liquid rock also known as magma.These calderas begin to grow very slowly while building up an enormous amount of pressure. Aft ...

(2 pages) 40 0 5.0 May/2003

Subjects: Science Essays > Earth Sciences

The Physical Make-up of Volcanoes.

e settling out. Molten rock below the surface of the Earth that rises in volcanic vents is known as magma, but after it erupts from a volcano it is called lava. Originating many tens of miles beneath ... from a volcano it is called lava. Originating many tens of miles beneath the ground, the ascending magma commonly contains some crystals, fragments of surrounding (unmelted) rocks, and dissolved gase ...

(7 pages) 80 0 2.5 Nov/2003

Subjects: Science Essays > Earth Sciences > Geology & Geosciences

Basalt Floods. The theory behind such occurences and the effects and evidence of such floods on the earth.

floods smother whole regions of the Earth in molten rock. They arereleased when immense volumes of magma apply pressure to the Earth's rigid crustuntil it cracks around huge, violent fountains of lav ... il it cracks around huge, violent fountains of lava. It can take over amillion years to exhaust the magma supply completely and end the flood.The last major flood eruption covered Washington and Orego ...

(2 pages) 26 0 1.8 Jan/2004

Subjects: Science Essays > Earth Sciences

This is a simple essay explaining the Bowen Reaction Series.

orman Levi Bowen and his colleaguesdetermined the sequence in which silicate mineralscrystallize as magma cools (Chernicoff 56). This work madeit possible to summarize a complex set of geochemicalrela ... ps, called Bowen's Reaction Series.This series shows that silicate mineralscancrystallizefrom mafic magmas in twoways, in a discontinuous series or a continuous series.Iron and magnesium rich silicate ...

(1 pages) 20 0 4.0 Feb/2004

Subjects: Science Essays > Environmental Science

Earthquakes

art because of tension. This then allows new oceanic crust to be made in the divergent boundary, as magma rises and eventually sets on the sea floor.If the plates on either side of the divergent bound ... s the lava for volcanoes. If at the same time a hot spot is directly below a thinned crust then the magma in the hot spot may hold too much pressure to be held by the thinner weakened crust. If this i ...

(6 pages) 143 0 4.8 Feb/2004

Subjects: Science Essays

Rock cycle derived from igneous rock.

(intrusive) or above ground (extrusive). Underground, they are formed when the melted rock, called magma, deep within the earth becomes trapped in small pockets. As these pockets of magma cool slowly ... the earth becomes trapped in small pockets. As these pockets of magma cool slowly underground, the magma becomes igneous rocks. Igneous rocks are also formed when volcanoes erupt, causing the magma t ...

(1 pages) 53 0 3.2 May/2004

Subjects: Science Essays > Environmental Science

Volcanoes, What is a Volcano,The types of volcanoes,How are Volcanoes formed,How is magma turned to lava.

hese form from quiet eruptions of fluid lava followed by explosive eruptions of viscous lava.How is Magma turned into Lava?Extremely high temperature and pressure cause the rock to melt and become liq ... into Lava?Extremely high temperature and pressure cause the rock to melt and become liquid rock or magma. When a large body of magma has formed, it rises through the denser rock layers toward Earth's ...

(1 pages) 52 0 5.0 Jun/2004

Subjects: Science Essays > Earth Sciences > Geography

Rock Cycle: Enviromental Managment

Liquid (molten) rock material solidify as magma (within the earth)or as lava (on the surface of the earth) to form igneous rock. the expose of ...

(1 pages) 807 2 4.0 Jul/2006

Subjects: Science Essays > Environmental Science

The Volcano eruption of Mt. Pinatubo in the Philipines. Short, concise and to the point.

increase in steam emissions went on for a few months before the eruption. From March to April 1991 magma travelled 20 miles (32 kilometres) through the surface under Mount Pinatubo. This caused power ... the afternoon. This is what happened in the eruption...THE ERUPTIONFrom the 7th of June to the 12th magma reached the surface but it had lost its gas so there was no explosive eruption. On the 9th of ...

(6 pages) 19 0 3.0 Dec/2006

Subjects: Science Essays > Earth Sciences > Geography

Rocks

aring down the Earth's surface materials.The ultimate source of all rocks on the Earth's surface is magma. Igneous rocks are formed when molten magma cools and solidifies, either underground or on the ... plates are subducted back into the mantle, where they are melted and can eventually be released as magma and form new igneous rocks.On the other hand, sedimentary rocks can be transformed into metamo ...

(2 pages) 54 0 5.0 Jan/2007

Subjects: Science Essays > Earth Sciences > Geology & Geosciences

Plate Tectonics

pieces called plates. Continents lie on top of the plates. These plates float on the molten rock or magma from the mantle and move slowly. The idea of moving plates is called the Theory of Plate Tecto ...

(3 pages) 60 0 5.0 Feb/2007

Subjects: Science Essays > Earth Sciences > Geology & Geosciences

Yellowstone National Park

lcanoes and glaciers through Millions of years. There is still a large amount of molten rock called magma witch furnishes the heat for the parks hot springs and geysers. Yellowstone has thousands of h ...

(2 pages) 9 0 0.0 Oct/2001

Subjects: Humanities Essays

Yellowstone National Park

lcanoes and glaciers through Millions of years. There is still a large amount of molten rock called magma witch furnishes the heat for the parks hot springs and geysers. Yellowstone has thousands of h ...

(2 pages) 14 0 3.0 Oct/2001

Subjects: Humanities Essays

Untitled

ques,and chemical techniques.The geophysical method can detect any changes in the rock below.As the magma rises it forces the rocks apart,Which can create minor earthquakes on and or around the mounta ... A comparison can be used.They take two or more seismographs readings to pin point exactly where the magma is trying to surface.This technique is successful in Hawaii where they are a lot of volcanos.T ...

(4 pages) 10 0 0.0 Feb/2008

Subjects: Science Essays > Environmental Science

Popocatepetl

the oceanic plate will descend into the subduction zone. Subduction zones generate a lot of igneous magma that rises to the surface to form volcanic mountains. I will discuss the geologic history of P ... er than rocks from Iztaccihuatl volcano, immediately to the north. "This suggests that the locus of magma production has migrated southwards during the course of time" (Rogers, 1995). Popo's present c ...

(7 pages) 3987 0 3.0 Feb/2008

Subjects: History Term Papers > Central & Southamerican History