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Chapter 3 - Igneous Rocks
... Origin of Igneous Rocks: 1. Plutonic, or Intrusive (remember Pluto, Lord of the Underworld!) - slow cooling underground 2. Volcanic, or Extrusive - fast cooling above ground Classification by texture: Dependent on origin 1. phaneritic - large crystals - plutonic 2. aphanitic - small crystals - volca ...
... Origin of Igneous Rocks: 1. Plutonic, or Intrusive (remember Pluto, Lord of the Underworld!) - slow cooling underground 2. Volcanic, or Extrusive - fast cooling above ground Classification by texture: Dependent on origin 1. phaneritic - large crystals - plutonic 2. aphanitic - small crystals - volca ...
Origin of Magma
... A common answer that people give is that increased temperature will cause a rock to melt. Although this is true, there are two other factors that have an important affect in melting: the pressure on the rock and the amount of water present. In general, thermal energy causes the atoms to move more ra ...
... A common answer that people give is that increased temperature will cause a rock to melt. Although this is true, there are two other factors that have an important affect in melting: the pressure on the rock and the amount of water present. In general, thermal energy causes the atoms to move more ra ...
Geography 12
... The point in the earth where rock fractures, resulting in an earthquake is known as __FOCUS_____. Point on the earth’s surface directly above the focus is known as the __EPICENTER_________. ___VISCOSITY_______ is the resistance to flow of a liquid, such as magma. Magma composed of andesite and grani ...
... The point in the earth where rock fractures, resulting in an earthquake is known as __FOCUS_____. Point on the earth’s surface directly above the focus is known as the __EPICENTER_________. ___VISCOSITY_______ is the resistance to flow of a liquid, such as magma. Magma composed of andesite and grani ...
Volcanoes – Mountains from Magma
... can be found anywhere on a plate – even rising out of the ocean floor! These volcanoes are formed above hot spots in the mantle, where the magma collects in enormous pools. The hot magma eventually melts the rock above it, and pours out through the hole onto the Earth’s surface as lava. The lava tha ...
... can be found anywhere on a plate – even rising out of the ocean floor! These volcanoes are formed above hot spots in the mantle, where the magma collects in enormous pools. The hot magma eventually melts the rock above it, and pours out through the hole onto the Earth’s surface as lava. The lava tha ...
Chapter 12: Volcanoes - Ms. Banjavcic`s Science
... The basaltic lava flows over Earth's surface covering large areas with this deposits of basaltic igneous rocks when it cools. Basaltic lava can also flow onto Earth's surface through large cracks (not volcanoes) called fissures and creates flood basalts. Accounts for the greatest volume of eru ...
... The basaltic lava flows over Earth's surface covering large areas with this deposits of basaltic igneous rocks when it cools. Basaltic lava can also flow onto Earth's surface through large cracks (not volcanoes) called fissures and creates flood basalts. Accounts for the greatest volume of eru ...
What do volcano morphologies - Mercer Island School District
... Pillow basalts form when basalt is erupted into water, such as along a seafloor spreading margin or into a lake. . Palagonite is reddish-orange clay mineral that forms from rapidly weathered basaltic glass. It often surrounds pillow structures. ...
... Pillow basalts form when basalt is erupted into water, such as along a seafloor spreading margin or into a lake. . Palagonite is reddish-orange clay mineral that forms from rapidly weathered basaltic glass. It often surrounds pillow structures. ...
Background Information for Plate Tectonics Rock Formation
... and the chemical composition of the magma. Magma deep below the surface cools slowly and forms large crystals, magma towards the surface or lava on the surface cools quickly and forms smaller crystals. b. Crystallization of materials dissolved in water: Magma can heat water causing minerals to disso ...
... and the chemical composition of the magma. Magma deep below the surface cools slowly and forms large crystals, magma towards the surface or lava on the surface cools quickly and forms smaller crystals. b. Crystallization of materials dissolved in water: Magma can heat water causing minerals to disso ...
G2S15Lesson1 Introd
... The composition (mineral makeup) of igneous rocks can be divided into two main groups: 1. Felsic (silicic) rocks: These are lighter colored rocks and include abundant quartz, potassium feldspar – this includes Granite and Rhyolite 2. Mafic Rocks: These are darker colored rocks and include abundant d ...
... The composition (mineral makeup) of igneous rocks can be divided into two main groups: 1. Felsic (silicic) rocks: These are lighter colored rocks and include abundant quartz, potassium feldspar – this includes Granite and Rhyolite 2. Mafic Rocks: These are darker colored rocks and include abundant d ...
Understanding Our Environment
... Slide slowly across earth’s surface. - Ocean basins form where continents crack and pull apart. - Magma forced up through cracks in oceanic crust form mid-oceanic ridges. ...
... Slide slowly across earth’s surface. - Ocean basins form where continents crack and pull apart. - Magma forced up through cracks in oceanic crust form mid-oceanic ridges. ...
Rocks
... minerals and other materials. Some contain a single mineral. Others contain several minerals. _________ – color provides clues to the rock’s mineral composition. (Ex: granite = light basalt = dark) _________- the look and feel of the rock’s surface. They use shape, size and pattern. __________ – how ...
... minerals and other materials. Some contain a single mineral. Others contain several minerals. _________ – color provides clues to the rock’s mineral composition. (Ex: granite = light basalt = dark) _________- the look and feel of the rock’s surface. They use shape, size and pattern. __________ – how ...
Word format
... 7. The inner core is composed mostly of: A. silicon and oxygen B. silica and oxygen C. hydrogen and helium D. iron and nickel E. nickels and dimes 8. The underlying theme of geology that “the present is the key to the past” is known as: A. the principle of uniformity B. the principle of uniformitis ...
... 7. The inner core is composed mostly of: A. silicon and oxygen B. silica and oxygen C. hydrogen and helium D. iron and nickel E. nickels and dimes 8. The underlying theme of geology that “the present is the key to the past” is known as: A. the principle of uniformity B. the principle of uniformitis ...
G2S15Lesson1 Introd
... The composition (mineral makeup) of igneous rocks can be divided into two main groups: 1. Felsic (silicic) rocks: These are lighter colored rocks and include abundant quartz, potassium feldspar – this includes Granite and Rhyolite 2. Mafic Rocks: These are darker colored rocks and include abundant d ...
... The composition (mineral makeup) of igneous rocks can be divided into two main groups: 1. Felsic (silicic) rocks: These are lighter colored rocks and include abundant quartz, potassium feldspar – this includes Granite and Rhyolite 2. Mafic Rocks: These are darker colored rocks and include abundant d ...
Key Terms for Theme 3 Aseismic Aseismig A description of buildings
... from one another. Constructive plate boundary has the same meaning. ...
... from one another. Constructive plate boundary has the same meaning. ...
5- Volcanism
... More than 100 years ago, geologists were aware of vast areas covered by felsic volcanic rocks a few meters to hundreds of meters thick. It seemed improbable that these could have formed as vast lava flows, but it also seemed equally unlikely that they were ash £111 deposits. Based on observations of ...
... More than 100 years ago, geologists were aware of vast areas covered by felsic volcanic rocks a few meters to hundreds of meters thick. It seemed improbable that these could have formed as vast lava flows, but it also seemed equally unlikely that they were ash £111 deposits. Based on observations of ...
Bell Ringer Answers 1-31-11
... Because most rocks contain several types of minerals. Nonfoliated; because it would have been changed by heat of lava flows and not by high pressure. ...
... Because most rocks contain several types of minerals. Nonfoliated; because it would have been changed by heat of lava flows and not by high pressure. ...
Are the oceans spreading at the mid
... constantly being created. Oceanic surveys found that such mountain chains extend all over the world. A more detailed picture can be found here. The ocean floor rocks are made from magma that has been erupted into the water at the mid-ocean ridge. The two plates are moving away from each other at the ...
... constantly being created. Oceanic surveys found that such mountain chains extend all over the world. A more detailed picture can be found here. The ocean floor rocks are made from magma that has been erupted into the water at the mid-ocean ridge. The two plates are moving away from each other at the ...
Ch 9 4 Testing Plate Tectonics
... deep-focus earthquakes and ocean trenches. Also, the absence of deep-focus earthquakes along the oceanic ridge system was shown to be consistent with the new theory Scientists have found that intermediate and deep focus earthquakes occur within the subducting plate as it goes into the mantle Sha ...
... deep-focus earthquakes and ocean trenches. Also, the absence of deep-focus earthquakes along the oceanic ridge system was shown to be consistent with the new theory Scientists have found that intermediate and deep focus earthquakes occur within the subducting plate as it goes into the mantle Sha ...
Volcanoes Crossword
... vent as the water cools quickly. 6 the smallest of the rock fragments that erupts from a volcano 10 a huge crater formed by the collapse of a volcano when magma rapidly erupts from underneath it. 12 magma __________ in silica resists flowing so the gases in the magma build up pressure until it viole ...
... vent as the water cools quickly. 6 the smallest of the rock fragments that erupts from a volcano 10 a huge crater formed by the collapse of a volcano when magma rapidly erupts from underneath it. 12 magma __________ in silica resists flowing so the gases in the magma build up pressure until it viole ...
Science Unit - Western Springs College
... The core is very hot due to heat produced from nuclear reactions. This heat is a source of energy for moving the tectonic plates. As the mantle closest to the core heats, the molten rock expands, becomes less dense and rises. When it reaches the cool crust, the molten rock loses heat energy, contrac ...
... The core is very hot due to heat produced from nuclear reactions. This heat is a source of energy for moving the tectonic plates. As the mantle closest to the core heats, the molten rock expands, becomes less dense and rises. When it reaches the cool crust, the molten rock loses heat energy, contrac ...
Volcanoes
... a process that produces a picturesque, cone-shaped structure that periodically erupts in a violent manner, like Mount St. Helens. Although some eruptions may be very explosive, many are not. ...
... a process that produces a picturesque, cone-shaped structure that periodically erupts in a violent manner, like Mount St. Helens. Although some eruptions may be very explosive, many are not. ...
Volcanoes and Igneous Activity Earth
... • Volcanic activity, related to extension and thinning of the crust, became widespread in the Sierra Nevada and Mojave regions around 20 mya. • Around 10-15 mya a series of deep marine basins formed along the coast between Orange County and the San Francisco region. The appearance of the basins may ...
... • Volcanic activity, related to extension and thinning of the crust, became widespread in the Sierra Nevada and Mojave regions around 20 mya. • Around 10-15 mya a series of deep marine basins formed along the coast between Orange County and the San Francisco region. The appearance of the basins may ...
Basalt
![](https://commons.wikimedia.org/wiki/Special:FilePath/BasaltUSGOV.jpg?width=300)
Basalt (pronounced /bəˈsɔːlt/, /ˈbæsɒlt/, /ˈbæsɔːlt/, or /ˈbeɪsɔːlt/)is a common extrusive igneous (volcanic) rock formed from the rapid cooling of basaltic lava exposed at or very near the surface of a planet or moon. Flood basalt describes the formation in a series of lava basalt flows.