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INA PIT CRATER ON THE MOON: EXTRUSION OF WANING
INA PIT CRATER ON THE MOON: EXTRUSION OF WANING

... resembling a convex meniscus shape, surrounded by a relatively optically fresh hummocky and blocky floor (Fig. 1). The Ina interior is defined by an inward-facing wall (5–10°) and a relatively flat basal terrace/ledge with a steep (10–30°) inward-facing scarp up to ~12 m high. The floor is generally ...
12.2 Features of Plate Tectonics
12.2 Features of Plate Tectonics

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Chapter 22 Notes

... by the solidification of magma. They are classified according to their size and shape and their orientation with respect to the surrounding rock. Discordant means the pluton cuts across the grain of the surrounding rock and concordant means it lies in the same direction as the grain of the surroundi ...
Earthquakes - SLC Geog A Level Blog
Earthquakes - SLC Geog A Level Blog

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5th EDITION - Gill Education
5th EDITION - Gill Education

... The paper used in this book is made from the wood pulp of managed forests. For every tree felled, at least one tree is planted, thereby renewing natural resources. All rights reserved. No part of this publication may be copied, reproduced or transmitted in any form or by any means without written pe ...
Advanced course on “Ocean island evolution: processes
Advanced course on “Ocean island evolution: processes

... Ocean island volcanoes constitute some of the most prominent and rapidlyformed features on the Earth’s surface. They are the direct result of a mass and energy transfer from the Earth’s interior to the surface, making an ideal place to study mantle/surface interactions. Additionally, islands and isl ...
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... Nobody knows for sure, however over the past 2200 years there have been 75 different eruptions. The most recent eruption occurred 300 years ago. Recently, small scale earthquakes due to the movement of magma beneath the Mt. Fuji area have been regularly observed. Though it may not be soon, Mt. Fuji ...
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Plate Tectonics

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Segregation of Olivine Grains in Volcanic Sands In Iceland

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Plate Tectonics

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Mauna Loa Kilauea Caldera

... size, which rests on loose sand and rubble. Cone >> A pile of erupted material surrounding a vent. Called puu in Hawaiian, which means any hill but usually a volcanic cone. Dike >> A narrow, upright, underground wall of magma. Flank >> The land area on one side or the other of a rift zone. On the Ma ...
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568KB - NZQA

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EGU2017
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Internal Forces Shaping the Earth
Internal Forces Shaping the Earth

... in the earth’s surface called a volcano. Most volcanoes are found along the tectonic plate boundaries. VOLCANIC ACTION When the magma flows out onto the land slowly, it may spread across an area and cool. Magma that has reached the earth’s surface is called lava. The most dramatic volcanic action is ...
Hazardous Earth - The Student Room
Hazardous Earth - The Student Room

... such as those within the Rift Valleys.  At destructive margins, subduction causes the melting of the oceanic plate, allowing for magma to rise on the crust to form a volcano. This produces explosive volcanoes such as Mt. St. Helens in the Ring of Fire.  The shape of a volcano determines its destru ...
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... Any 1 valid opportunity, e.g. the glacier offers a unique area to visit / see firsthand (1) and experience walking on it/ice is clearly very deep / formed into shapes. (1) Quad-biking (1) is another activity – on the area near to the glacier and allowing own transport to view glacier in a different ...
Glencoe Earth Science
Glencoe Earth Science

... move together are called convergent plate boundaries. They include areas where an oceanic plate slides below a continental plate as in Figure 7, and where one oceanic plate slides below another oceanic plate. The Andes in South America began forming when an oceanic plate started sliding below a cont ...
Chapter 12 – Volcanoes
Chapter 12 – Volcanoes

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Chapter 2 Lesson 3 How Do Movements Of The Earth`s Crust

Earth and Space Science Semester 2 Exam Review Part 1
Earth and Space Science Semester 2 Exam Review Part 1

... What does a volcano tell us about what is happening in the Earth’s Interior? -The Earth releases tremendous amounts of stored energy from its Inner and Outer Cores in a controlled manner by way of tectonic processes. - These processes create changes to existing land and produce new land formation. - ...
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Volcano



A volcano is a rupture on the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.Earth's volcanoes occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in its mantle. Therefore, on Earth, volcanoes are generally found where tectonic plates are diverging or converging. For example, a mid-oceanic ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates coming together. Volcanoes can also form where there is stretching and thinning of the crust's interior plates, e.g., in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande Rift in North America. This type of volcanism falls under the umbrella of ""plate hypothesis"" volcanism. Volcanism away from plate boundaries has also been explained as mantle plumes. These so-called ""hotspots"", for example Hawaii, are postulated to arise from upwelling diapirs with magma from the core–mantle boundary, 3,000 km deep in the Earth. Volcanoes are usually not created where two tectonic plates slide past one another.Erupting volcanoes can pose many hazards, not only in the immediate vicinity of the eruption. One such hazard is that volcanic ash can be a threat to aircraft, in particular those with jet engines where ash particles can be melted by the high operating temperature; the melted particles then adhere to the turbine blades and alter their shape, disrupting the operation of the turbine. Large eruptions can affect temperature as ash and droplets of sulfuric acid obscure the sun and cool the Earth's lower atmosphere (or troposphere); however, they also absorb heat radiated up from the Earth, thereby warming the upper atmosphere (or stratosphere). Historically, so-called volcanic winters have caused catastrophic famines.
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