Disasters - The Bored of Studies Community
... At divergent boundaries, plates are moving apart from each other and the space that this creates is filled with new crust due to the process of sea-floor spreading. Convergent boundaries eg- Himalayas At convergent boundaries, plates collide with each other. However, if one plate is pushed under the ...
... At divergent boundaries, plates are moving apart from each other and the space that this creates is filled with new crust due to the process of sea-floor spreading. Convergent boundaries eg- Himalayas At convergent boundaries, plates collide with each other. However, if one plate is pushed under the ...
Chapter 4: Igneous Rocks and Plutons
... Igneous rock composition is determined mostly by the composition of the parent magma, but magma composition can change so that the same magma may yield more than one type of igneous rock. According to Bowen's Reaction Series, cooling maffic magma yields a sequence of minerals, each of which is stabl ...
... Igneous rock composition is determined mostly by the composition of the parent magma, but magma composition can change so that the same magma may yield more than one type of igneous rock. According to Bowen's Reaction Series, cooling maffic magma yields a sequence of minerals, each of which is stabl ...
Geology Winter 09 Study Guide – Igneous Rocks • Lava flows are
... ____________, a light-colored volcanic glass, forms when bubbling, highly gaseous, silica-rich magma cools instantaneously. It is sometimes light enough to float on water. ____________, a dark volcanic glass, forms when silica-rich magma cools instantaneously. It breaks by fracture rather than cleav ...
... ____________, a light-colored volcanic glass, forms when bubbling, highly gaseous, silica-rich magma cools instantaneously. It is sometimes light enough to float on water. ____________, a dark volcanic glass, forms when silica-rich magma cools instantaneously. It breaks by fracture rather than cleav ...
1 Plate Tectonics Review Homework w
... 2. The speed of tectonic plate movement varies from plate to plate in the range of 1 to 10 miles per year. True or False? 3. We can measure plate velocity with radiometric dating of seamount chains, or the distance of a marine magnetic anomaly from a mid-ocean ridge. True or False? 4. Marine magneti ...
... 2. The speed of tectonic plate movement varies from plate to plate in the range of 1 to 10 miles per year. True or False? 3. We can measure plate velocity with radiometric dating of seamount chains, or the distance of a marine magnetic anomaly from a mid-ocean ridge. True or False? 4. Marine magneti ...
Geomorphology of Volcanic / Igneous Landscapes
... Mafic Rocks (from Mag and Fe) - generally darker colored rocks relatively high in iron, magnesium, calcium and low in silicon. Associated with high temp. end of ...
... Mafic Rocks (from Mag and Fe) - generally darker colored rocks relatively high in iron, magnesium, calcium and low in silicon. Associated with high temp. end of ...
Chapter 9 Review Test
... 15. Which of these would you expect to see during a nonexplosive eruption? a. giant fountains of lava and rock c. a mountainside caving in b. clouds of ash darkening the sky d. huge lava flows ...
... 15. Which of these would you expect to see during a nonexplosive eruption? a. giant fountains of lava and rock c. a mountainside caving in b. clouds of ash darkening the sky d. huge lava flows ...
Earthquakes PPT
... SUBDUCTION ZONES occur all around the edge of the Pacific Ocean. Responsible for the world’s • BIGGEST E-Quakes • MOST TERRIBLE TSUNAMIS • Some of the WORST VOLCANIC ERUPTIONS ...
... SUBDUCTION ZONES occur all around the edge of the Pacific Ocean. Responsible for the world’s • BIGGEST E-Quakes • MOST TERRIBLE TSUNAMIS • Some of the WORST VOLCANIC ERUPTIONS ...
Geoscience 10: Geology of The National Parks Unit 3 - e
... tetrahedra that try to polymerize (stick together in chains, sheets, etc.) to make lumps; Can break up lumps with great heat and much iron (in basalt); makes lavas that flow easily and don’t explode, so Hawaii is a shield volcano, much wider than high; ...
... tetrahedra that try to polymerize (stick together in chains, sheets, etc.) to make lumps; Can break up lumps with great heat and much iron (in basalt); makes lavas that flow easily and don’t explode, so Hawaii is a shield volcano, much wider than high; ...
Classifying Common Igneous Rocks
... sizes, or grain sizes, that are larger than sand-sized and, under rare circumstances, may be larger than a penny. If the melted rock materials cooled on or near the Earth’s surface, they are called extrusive igneous rocks. If extrusive igneous rocks have crystals, they are smaller than sand-sized. H ...
... sizes, or grain sizes, that are larger than sand-sized and, under rare circumstances, may be larger than a penny. If the melted rock materials cooled on or near the Earth’s surface, they are called extrusive igneous rocks. If extrusive igneous rocks have crystals, they are smaller than sand-sized. H ...
Engineering Geological Properties of the Volcanic Rocks and Soils
... being typical for poorly-cofIllacted tuffs and higher than 20 kN/m' for well-cofIllacted tuffs; tuff cOfIllosition af fects their density, with higher densities shown by the ba saltic tuffs and lower ones by acidic tuffs. The strength of the tuffs varies with the degree of cOfIllaction, grain size ...
... being typical for poorly-cofIllacted tuffs and higher than 20 kN/m' for well-cofIllacted tuffs; tuff cOfIllosition af fects their density, with higher densities shown by the ba saltic tuffs and lower ones by acidic tuffs. The strength of the tuffs varies with the degree of cOfIllaction, grain size ...
Term - rgs.org
... Pyroclastic material which is over 64mm in size, often associated with explosive eruptions ...
... Pyroclastic material which is over 64mm in size, often associated with explosive eruptions ...
Sea Floor Spreading NOTES 2016 Key
... 1. Magnetic ___Reversals_____: Throughout Earth’s history, the north and south magnetic poles have changed places many times. When the poles change places, the ___polarity__ of Earth’s magnetic poles changes ...
... 1. Magnetic ___Reversals_____: Throughout Earth’s history, the north and south magnetic poles have changed places many times. When the poles change places, the ___polarity__ of Earth’s magnetic poles changes ...
Powerpoint Presentation Physical Geology, 10/e
... (crystals >5 cm) formed when magma cools very slowly at depth • A glassy texture contains no crystals at all, and is formed by rapid cooling ...
... (crystals >5 cm) formed when magma cools very slowly at depth • A glassy texture contains no crystals at all, and is formed by rapid cooling ...
Rocks and Minerals posted version
... —Last minerals - higher amounts of silica and lower melting point ...
... —Last minerals - higher amounts of silica and lower melting point ...
6th Grade Science 1st Semester Final Exam / Common Assessment
... a. The continents have always been where they are now b. Today’s continents were once part of a single land mass that split apart. c. The continents are made of rock. d. The continents will one day join to form a single continent. 43. (S6E5g) What can fossils reveal about Earth’s past? a. Only chang ...
... a. The continents have always been where they are now b. Today’s continents were once part of a single land mass that split apart. c. The continents are made of rock. d. The continents will one day join to form a single continent. 43. (S6E5g) What can fossils reveal about Earth’s past? a. Only chang ...
Chapter 8 Section 2 Types of Volcanoes
... • A set of deep cracks form in an area called a rift zone. • Hot mantle rock rises to fill these cracks. • As the rock rises, a decrease in pressure causes hot mantle rock to melt and form magma. • The magma that reaches Earth’s surface is called lava. Basaltic magma rises to Earth’s surface through ...
... • A set of deep cracks form in an area called a rift zone. • Hot mantle rock rises to fill these cracks. • As the rock rises, a decrease in pressure causes hot mantle rock to melt and form magma. • The magma that reaches Earth’s surface is called lava. Basaltic magma rises to Earth’s surface through ...
Review Topics for Test I
... Also formed from chemical weathering where minerals are dissolved in fluid then precipitated (solidified) again when the fluid evaporates or becomes saturated. (example: halite = rock salt) Sedimentary rocks form in all environments on Earth as the solid earth breaks down, waters evaporate, or miner ...
... Also formed from chemical weathering where minerals are dissolved in fluid then precipitated (solidified) again when the fluid evaporates or becomes saturated. (example: halite = rock salt) Sedimentary rocks form in all environments on Earth as the solid earth breaks down, waters evaporate, or miner ...
Earth Revealed #10: Geologic Time
... 5. True or False. Because of their high density and viscosity, some mud and debris flows can move large boulders and even cars. 6. True or False. Mass wasting is never a concern for home owners or land developers. 7. Avalanches can have speeds of over a. 100 km/hour ...
... 5. True or False. Because of their high density and viscosity, some mud and debris flows can move large boulders and even cars. 6. True or False. Mass wasting is never a concern for home owners or land developers. 7. Avalanches can have speeds of over a. 100 km/hour ...
Study Guide: Volcano Test
... A. divergent boundary - two plates moving apart; allows magma to rise to the surface and causes a volcano to form B. convergent boundary - two plates moving together; one plate subducts causing a volcano to form hot spot - an area where material deep within the mantle rises and then melts forming ma ...
... A. divergent boundary - two plates moving apart; allows magma to rise to the surface and causes a volcano to form B. convergent boundary - two plates moving together; one plate subducts causing a volcano to form hot spot - an area where material deep within the mantle rises and then melts forming ma ...
Notes-Volcanoes
... - Lahar is an Indonesian word for volcanic debris flow - Lahars are flows of water and loose volcanic debris - They are especially prevalent at snow-clad and ice-clad volcanoes -Lahars are volcanic mudflows - They are triggered in one of three ways: 1) Volcanic activity melting snow and ice on the v ...
... - Lahar is an Indonesian word for volcanic debris flow - Lahars are flows of water and loose volcanic debris - They are especially prevalent at snow-clad and ice-clad volcanoes -Lahars are volcanic mudflows - They are triggered in one of three ways: 1) Volcanic activity melting snow and ice on the v ...
Chapter 8 Volcanic Activity
... slope of a shield volcano is very gentle near the top, but it increases on the flanks Composite volcanoes: Known for their beautiful cone shape, characterized by magma with an intermediate silica conten ...
... slope of a shield volcano is very gentle near the top, but it increases on the flanks Composite volcanoes: Known for their beautiful cone shape, characterized by magma with an intermediate silica conten ...
unit 8: Metamorphic Rocks
... change due to pressure or heat in the earth. Marble is an example of a metamorphic rock. Limestone changes under heat and pressure, transforming into a new kind of rock, marble. Metamorphism means "change" in rocks. Heat, pressure, and fluids that contain chemicals can convert mineral composition in ...
... change due to pressure or heat in the earth. Marble is an example of a metamorphic rock. Limestone changes under heat and pressure, transforming into a new kind of rock, marble. Metamorphism means "change" in rocks. Heat, pressure, and fluids that contain chemicals can convert mineral composition in ...
UP7.LP2.TypesofRocksGN
... __________ Heat and pressure can turn the other two types into this __________ Bits and pieces of the other two types can be found in this Directions: Complete this chart by choosing phrases from the list and writing them in the correct spaces. ...
... __________ Heat and pressure can turn the other two types into this __________ Bits and pieces of the other two types can be found in this Directions: Complete this chart by choosing phrases from the list and writing them in the correct spaces. ...
Basalt
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.