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Earth Science
Earth Science

... N. Dormant O. Extinct P. Shield Volcano Q. Cinder Cone R. Composite Volcano S. Caldera T. Volcanic Neck U. Dike V. Sill W. Batholith X. Geothermal Activity Y. Geyser ...
HST_CRF_04_02_03.qxd
HST_CRF_04_02_03.qxd

... 1. Volcanic eruptions can be times stronger than the explosion produced by the first atomic bomb. 2. What is magma? 3. Magma that flows onto the Earth’s surface is called . 4. What is a volcano? ...
a geological-petrological model of the karymsky volcanic center
a geological-petrological model of the karymsky volcanic center

... of peripheral and crustal magmatic chambers. Mantle and crustal fractures and associated fissures form zones of weakness where they intersect. These are the so-called «structural knots» favorable for the formation of magmatic chambers and new volcanic centers, as well as for the magmatic substance d ...
The Montserrat Eruption Case Study PPT
The Montserrat Eruption Case Study PPT

... Exam question June 2011 ...
Volcano Types - Kenston Local Schools
Volcano Types - Kenston Local Schools

... conduit system. This is when the magma (molten rock material) from a reservoir deep in the Earth's crust rises to the surface. This type of volcano is built by the accumulation of materials erupted through the conduit, which increases in size as lava, cinders, and ash are added to its slopes. ...
Volcanoes - Tanque Verde Unified School District
Volcanoes - Tanque Verde Unified School District

... chain, Yellowstone ...
Virtual Volcano Lab Handout
Virtual Volcano Lab Handout

... --Using the topic menu in the lower right corner, read about: 1) Tectonic Plates: Where are most of the active volcanoes found? ________________ 2) the Ring of Fire: Where is the Ring of Fire located? _________________________ 3) the Layers Within: How do volcanoes form? ____________________________ ...
Volcano - watertown.k12.wi.us
Volcano - watertown.k12.wi.us

... much larger than the original crater. It is either an exploded volcano or a _______________________ volcano. Examples are Krakatoa (Indonesia) Crater Lake (Oregon), and Mount St. Helens after 1980 (Washington). VI. ___________________________________ of Volcanoes 1. ____________________ Volcano- is ...
Virtual Volcano Lab
Virtual Volcano Lab

... --Using the topic menu in the lower right corner, read about: 1) Tectonic Plates: Where are most of the active volcanoes found? ________________ 2) the Ring of Fire: Where is the Ring of Fire located? _________________________ 3) the Layers Within: How do volcanoes form? ____________________________ ...
clozevolcanonotes
clozevolcanonotes

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Chapter 13 Section 2 Directed Reading
Chapter 13 Section 2 Directed Reading

... 12. Pyroclastic particles less than 2 mm in diameter that mostly fall on the land that immediately surrounds the volcano are called ____________________________. 13. Pyroclastic particles less than 0.25 mm in diameter that are so small they might travel around Earth in the upper atmosphere are calle ...
What is unique about the West Mata submarine volcano?
What is unique about the West Mata submarine volcano?

... occuring at its two vents, named Prometheus and Hades. Boninite is a primitive andesite composed of mafic extrusive rock that is derived from metasomatised mantle melting and likely fractional crystallization. It contains high concentrations of Mg and SiO2, specifically > 8% MgO, > 52% SiO2 and < 0. ...
Slide 1
Slide 1

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S05_4359_L24
S05_4359_L24

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... Dormant- are not currently erupting but are considered likely to do so. Mt. St Helens was dormant for 123 years before it erupted in 1980. ...
Volcano Making - Manchester Museum
Volcano Making - Manchester Museum

... you shake it up before you open it!). The way that a volcano erupts depends on how runny the magma is and much pressure has built up before the magma breaks through the surface. ...
Volcanoes and Earthquakes
Volcanoes and Earthquakes

... gases and ash into the atmosphere to effect weather globally by blocking the sun’s heat ...
Landforms at plate margins – Volcanoes and supervolcanoes
Landforms at plate margins – Volcanoes and supervolcanoes

... A volcano is a cone-shaped mountain formed by surface eruptions from a magma chamber inside the Earth. The magma that reaches the surface in an eruption is called lava, and is one of the many different products that can be thrown out, including ash, cinders, pumice, dust, gases and steam. The world ...
Volcanoes - Travelling across time
Volcanoes - Travelling across time

... The formation of volcanoes 1. Magma rises through cracks or weaknesses in the Earth's crust. 2. Pressure builds up inside the Earth. 3. When this pressure is released, eg as a result of plate movement, magma explodes to the surface causing a volcanic eruption. 4. The lava from the eruption cools to ...
Volcanoes
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...  Andesitic Lava ...
Volcanic Eruptions
Volcanic Eruptions

... How It All Starts • Magma from the mantle rises up through the crust because it is less dense. • Magma becomes trapped beneath layers of rock. • Weak spots in the crust allow trapped magma to reach the surface, forming a volcano. ...
Volcanoes
Volcanoes

... 1. There are 1510 active volcanoes in the world many of them are in the ring of fire. 2. The word volcano actually comes from comes the name of the Roman god of fire, Vulcan. 3. The biggest known volcano in our solar system is on Mars. It’s called Olympus Mons and it measures a gigantic 373 miles wi ...
Volcanoes
Volcanoes

... • The ash-cinder volcano: throws out (in addition to lava) much ash into the air. Through this the volcanic cone is built up from alternate layers of ash and cinder. ...
Basalt has a high melting point and is very runny (like honey) – in
Basalt has a high melting point and is very runny (like honey) – in

... and it flows like cold treacle. Because if flows more slowly than basalt, it forms volcanic cones with a much steeper shape, called cone volcanoes. Examples of cone volcanoes include Mt Taranaki and Mt Ruapehu. Rhyolite magma is the most viscous type of magma – it flows like tar. It is light in colo ...
Volcanoes
Volcanoes

... • A vent that lets out heat from inside the Earth , spewing out lava and eventually forming a mountain. • 3 classifications of volcanic activity: extinct (does not erupt), dormant (sleeping), and active (currently erupting). • The most active volcano on the Earth is Kilauea on the big island of Hawa ...
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Axial Seamount



Axial Seamount (also Coaxial Seamount or Axial Volcano) is a seamount and submarine volcano located on the Juan de Fuca Ridge, approximately 480 km (298 mi) west of Cannon Beach, Oregon. Standing 1,100 m (3,609 ft) high, Axial Seamount is the youngest volcano and current eruptive center of the Cobb-Eickelberg Seamount chain. Located at the center of both a geological hotspot and a mid-ocean ridge, the seamount is geologically complex, and its origins are still poorly understood. Axial Seamount is set on a long, low-lying plateau, with two large rift zones trending 50 km (31 mi) to the northeast and southwest of its center. The volcano features an unusual rectangular caldera, and its flanks are pockmarked by fissures, vents, sheet flows, and pit craters up to 100 m (328 ft) deep; its geology is further complicated by its intersection with several smaller seamounts surrounding it.Axial Seamount was first detected in the 1970s by satellite altimetry, and mapped and explored by Pisces IV, DSV Alvin, and others through the 1980s. A large package of sensors was dropped on the seamount through 1992, and the New Millennium Observatory was established on its flanks in 1996. Axial Seamount received significant scientific attention following the seismic detection of a submarine eruption at the volcano in January 1998, the first time a submarine eruption had been detected and followed in situ. Subsequent cruises and analysis showed that the volcano had generated lava flows up to 13 m (43 ft) thick, and the total eruptive volume was found to be 18,000–76,000 km3 (4,300–18,200 cu mi). Axial Seamount erupted again in April 2011, producing a mile-wide lava flow and fulfilling a 16-year cycle that had been predicted in 2006.
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