No, volcanic eruptions are due to the movement of BIG pieces of land beneath the earths surface called tectonic plates. It is good that these plates move, because it indicates that this planet is a "live planet". planets on which tectonic plates do not move are considered "dead planets". If a volcano is going to erupt near you, the best thing to do is to get away from the volcano.
Surtsey is formed on the convergent boundary between the North American and Eurasian plates. At this location this is oceanic crust.
The word volcano has its origin from the name of Vulcan, the God of fire in Roman Mythology.
A volcano erupts when pressure on the magma chamber causes the magma to rise and come out together with gas, rocks and ashes. The violence of an eruption depends on how much pressure the volcano is under before it erupts.
Volcanoes are caused to erupt when the inner core of the earth holds more pressure or heat inside it. Volcanoes are the outside source of releasing the lava and magma that the earth has inside it. When a volcano erupts it means that the earth is releasing a large amount of pressure from within.
Magma is continuously supplied from the mantle of the Earth. Shield volcanoes usually have a gentle eruption, as it contains basic lava. Acid-lava and composite volcanoes usually have a violent eruption as it contains acidic lava. The vent of the volcano might also be blocked, causing the magma to force its way out, thus causing a huge explosion.
In a more specific way, volcanoes erupt when rock releases pressure.
The steeper the subduction angle, the closer the arc will be to the trench. This is controlled by the age of the oceanic crust being subducted where in general the older the crust, the cooler and more dense it will be and so less buoyant and will sink more steeply.
Castle Rock, on which Edinburgh Castle is built, is the eroded remnant of the basalt plug of an unnamed, extinct volcano. Arthur's Seat, about a mile away, is the main peak of a group of volcanic hills of the same age and composition as Castle Rock. Features on Arthur's Seat suggest that there were multiple volcanic vents in the area 350 million years ago. Subsequent glacial erosion has left the isolated features seen today.
No specific number can be pinpointed due to their eroded structure, however there are known volcanoes that date back to the Devonian period in New Hampshire.
At the time of writing this answer, there are no active volcanoes in the eastern US - the eastern US being generally regarded as all states east of the Mississippi.
But there are areas of possible earthquake hazard in the eastern US.
New Madrid fault: This is potentially the most dangerous fault zone in the entire country and is located in northeast Arkansas, southeast Missouri, west Kentucky and west Tennessee, with areas in Illinois, Indiana, and Mississippi also likely to be affected.
There are less dangerous fault zones in east Tennessee/western North Carolina, southeast of South Carolina, and northern New York/Vermont.
The states which have active or potentially active areas of volcanic activity within their borders are (in alphabetical order):
Alaska: Wrangeli, more than 30 between Spurr and Kiska in the Aleutians.
Arizona: Sunset Crater cinder cone, Uinkaret volcanic field
California: Mt. Shasta, Medicine Lake, Lassen Peak, Clear Lake, Coso, Long Valley caldera
Colorado: Dotsero maar
Idaho: Craters of the Moon
Nevada: Steamboat Springs lava domes
New Mexico: Carizzozo Cinder Cone, Valles Caldera and Zuni-Bandera field
Oregon:three Sisterns, Mt Hood, Mt Jefferson, Newberry Crater, Crater Lake
Utah: Black Rock, Markagunt and Santa Clara fields,
Washington: Mt St Helens, Mr Baker, Mt Rainer, Glacier Peak.
Mount Thera was a shield volcano, a type of volcano which is built completely from lava flows.
The island of Santorini, Greece is the site of ancient Thera. The center of the island was where Mount Thera's caldera was located.
Mount Tabor in Galilee is not volcanic.
Mount Tabor, in Oregon, USA, is an extinct volcano. It has been inactive for thousands of years.
Volcanoes are evidence of the ceaseless tectonic activity that our planet has. The molten core of the earth drives all of the processes we see, including volcanoes, earthquakes, even as high up as the northern lights. The heat that is inside of our planet is the driving force behind volcanoes, however volcanoes form in many different areas, and under many different conditions. Different types of volcanoes are evidence of different processes being present underground. However, to put it simply without the heat from the core of the earth there wouldn't be any volcanoes.
are there any volcanoes in Alabama
magma champers vent
conduit ash cloud
layer of ash
layer of lay
No. The blacksmith god Hephaestus was also a god of volcanoes. The greek believed the volcano represented a smith's furnace and when it erupted it was the equivalent to sparks flying when a smith heats heated metal.
There is a link to the source below.
Magma and lava are both molten (liquid) rock, but magma is molten rock produced underneath earth's surface and lava is the magma that was produced that is flowing onto earth's surface.
Magma is a molten material found beneath earth's crust that forms minerals with large crystals when it cools slowly and forms minerals with small crystals when it cools rapidly. Lava is on the outside of the volcano and when it cools it forms extrusive igneous rock that are fine grained. When magma on the inside of a volcano cools, this rock is called intrusive igneous rock are coarse grained. Both rocks can look similar but some extrusive igneous rocks like obsidian can have a glassy and smooth texture.
lava is what comes out of a volcano
magma is what is inside the volcano
Lava is hot molten rock that erupted from volcano Magma is hot material below earths crust, from which lava is formed So the basic difference is just that lava is hot molten rock that already erupted; while magma is what is inside earth' s crust
Magma is a substance in the mantle, under the earth's crust, where lava is that same substance but outside the earth's crust.
there are 78 volcanoes in the north island and Auckland has 46 volcanoes which is over half of the amount
There are many volcanoes in the north island. Maybe too many to count. Around Auckland there are 50 volcanoes.
Then there are Taranaki, Ruapehu, Tongariro, Ngaruahoe, Tarawera, Taupo, Rotorua and so on.
Look at related links below to see a list of NI volcanoes.
The ring of fire is merely a part of the world where there are a lot of volcanoes. They are not limited to that region. If there are no volcanoes near where you live, there may once have been a volcano that has long since stopped erupting and eroded away. The rocks may also have been taken there by humans. Scoria is a volcanic rock that is commonly used in landscaping and in gas grills.
A caldera is a depression in the land surface caused by the collapse of land into an emptied magma chamber as a result of an eruption of a stratovolcano. A caldera indicates that the volcano produced an extremely violent eruption.
Caldera is also the Spanish language word for cauldron.
Hawai'i was formed from volcanoes. The shape of the islands (volcanic mountains) affects the weather. Volcanic activity causes eartquakes, eruptions on the Big Island cause it to continue to grow, cause fires, close roads. Gasses from the volcanoes can cause vog (volcanic smog) and volcanoes have produced fertile soil in Hawai'i.
Because it's known as 'The Pacific ring of fire' simply because volcanoes have erupted around every area included in the ring. This is where the two tectonic plates collide which forces the ground above, up. You wouldn't want to live around a bundle of volcanoes now would you?
It erupted at around 1pm on the 24th August 79 AD.
Mt Tarawera erupted for 8 days in 1948 in NZ.
Silica content makes the magma thicker which can cause a more explosive eruption, and also make it so more gases aer open to be trapped
Asked By Wiki User
Asked By Wiki User
Asked By Wiki User
Copyright © 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.