Name
... o Explain how the Himalaya Mountains formed. The Himalaya Mountains formed when the plate carrying India (The Indian Plate) collided with the plate which carried Asia (The Eurasian Plate). Because continental crust is too buoyant to be subducted, the rocks were folded and uplifted forming the Himala ...
... o Explain how the Himalaya Mountains formed. The Himalaya Mountains formed when the plate carrying India (The Indian Plate) collided with the plate which carried Asia (The Eurasian Plate). Because continental crust is too buoyant to be subducted, the rocks were folded and uplifted forming the Himala ...
Geo 221_14 copy
... mineral crystallizes from a magma or recrystallizes during metamorphism. During crystalliza8on, however, the number of daughter atoms in a mineral is not necessarily reset to zero, so the ini8al number of ...
... mineral crystallizes from a magma or recrystallizes during metamorphism. During crystalliza8on, however, the number of daughter atoms in a mineral is not necessarily reset to zero, so the ini8al number of ...
What are Igneous rocks?
... are in plug due to this process the texture of the rock changed , this kind of metamorphism is known as cataclastic metamorphism. • Dynamo thermal metamorphism: It is also called as regional metamorphism. This involves development of large scale changes in the structural and chemical constitution of ...
... are in plug due to this process the texture of the rock changed , this kind of metamorphism is known as cataclastic metamorphism. • Dynamo thermal metamorphism: It is also called as regional metamorphism. This involves development of large scale changes in the structural and chemical constitution of ...
Students should know the physical properties (e.g., hardness, color
... existence of Pangaea. As plates move in relation to one another, landforms and topographic features, such as volcanoes, mountains, valleys, ocean trenches, and midocean ridges, are generated along plate boundaries. Those regions are also frequently associated with geothermal and seismic activity. Th ...
... existence of Pangaea. As plates move in relation to one another, landforms and topographic features, such as volcanoes, mountains, valleys, ocean trenches, and midocean ridges, are generated along plate boundaries. Those regions are also frequently associated with geothermal and seismic activity. Th ...
Teacher`s Guide - Discovery Education
... Definition: Molten rock in the Earth’s crust Context: Earth’s surface has hot, molten rock called magma. ...
... Definition: Molten rock in the Earth’s crust Context: Earth’s surface has hot, molten rock called magma. ...
V.V. Beloussov (1907-1990) Famous opponent of plate tectonics
... Studied the East Africa Rift and became convinced that continental regions can become oceanic regions through infiltration of mafic magma and chemical transformation of crust (oceanization) Belossov interpreted Earth history in terms of vertical movement of the crust, and proposed that oceans become ...
... Studied the East Africa Rift and became convinced that continental regions can become oceanic regions through infiltration of mafic magma and chemical transformation of crust (oceanization) Belossov interpreted Earth history in terms of vertical movement of the crust, and proposed that oceans become ...
Chapter 10 Volcanoes and other Igneous Activity Section 10.1
... ___________________________ plate boundaries. Some volcanoes form far from plate boundaries above ________________________ in the crust. ...
... ___________________________ plate boundaries. Some volcanoes form far from plate boundaries above ________________________ in the crust. ...
First Exam - Practice Test
... a. Is the source of Sun’s energy b. Occurs when the nucleus of an atom fissions and releases energy c. Radiates throughout the universe d. Is the reason that Jupiter has no solid surface e. All the above 3. Mercury, Venus, and Mars are different than Earth because: a. They are closer to the Sun. b. ...
... a. Is the source of Sun’s energy b. Occurs when the nucleus of an atom fissions and releases energy c. Radiates throughout the universe d. Is the reason that Jupiter has no solid surface e. All the above 3. Mercury, Venus, and Mars are different than Earth because: a. They are closer to the Sun. b. ...
Earth Structure and Plate Tectonics
... suggesting the Earth’s crust is divided into sections. ◦ 2. Sediment samples – the layers were thin or absent at the oceanic ridges, and thicker away from the oceanic ridges. This suggests newer crust at the ridges. ◦ 3. Radiometric dating was used to determine the age of rocks. Scientists have foun ...
... suggesting the Earth’s crust is divided into sections. ◦ 2. Sediment samples – the layers were thin or absent at the oceanic ridges, and thicker away from the oceanic ridges. This suggests newer crust at the ridges. ◦ 3. Radiometric dating was used to determine the age of rocks. Scientists have foun ...
File
... process where the ocean floor sinks back down into the mantle. When convection currents in the mantle make tectonic plates pull apart and it can create 51. Divergent boundary land forms such as rift valleys, volcanoes, and mid-ocean ridges When convection currents in the mantle make tectonic plates ...
... process where the ocean floor sinks back down into the mantle. When convection currents in the mantle make tectonic plates pull apart and it can create 51. Divergent boundary land forms such as rift valleys, volcanoes, and mid-ocean ridges When convection currents in the mantle make tectonic plates ...
Untitled - Vermont Fish and Wildlife
... evolved. During those times, calcium-rich sediments, the remnants of marine life, collected on the sea floor. The history of Vermont’s rocks is filled with tales of continental movement, the building and wearing away of mountains, and intense volcanic activity. We will tell this story only briefly a ...
... evolved. During those times, calcium-rich sediments, the remnants of marine life, collected on the sea floor. The history of Vermont’s rocks is filled with tales of continental movement, the building and wearing away of mountains, and intense volcanic activity. We will tell this story only briefly a ...
Chapter 21: Metamorphism
... Specific Metamorphic Rock Types Greenschist/Greenstone: a low-grade metamorphic rock that typically contains chlorite, actinolite, epidote, and albite. Note that the first three minerals are green, which imparts the color to the rock. Such a rock is called greenschist if foliated, and greenstone if ...
... Specific Metamorphic Rock Types Greenschist/Greenstone: a low-grade metamorphic rock that typically contains chlorite, actinolite, epidote, and albite. Note that the first three minerals are green, which imparts the color to the rock. Such a rock is called greenschist if foliated, and greenstone if ...
Define and discuss on Geothermal Gradients Submitted by WWW
... The geothermal gradient of 25 degrees centigrade/kilometer is thought to be restricted to the upper part of the crust. If it continued at this rate uniformly from the surface, the internal temperature of the earth would be greater than 2,000 degrees centigrade within the lithosphere—a temperature th ...
... The geothermal gradient of 25 degrees centigrade/kilometer is thought to be restricted to the upper part of the crust. If it continued at this rate uniformly from the surface, the internal temperature of the earth would be greater than 2,000 degrees centigrade within the lithosphere—a temperature th ...
Rock
... - Pushing the mantle’s soft rock up (as it warms) and down (as it cools) like a conveyor belt - The lithosphere is dragged along with the mantle - Continents have combined, separated, and recombined over millions of years • Pangaea = all landmasses were joined into 1 supercontinent 225 million years ...
... - Pushing the mantle’s soft rock up (as it warms) and down (as it cools) like a conveyor belt - The lithosphere is dragged along with the mantle - Continents have combined, separated, and recombined over millions of years • Pangaea = all landmasses were joined into 1 supercontinent 225 million years ...
Rock Cycle - science-b
... - Pushing the mantle’s soft rock up (as it warms) and down (as it cools) like a conveyor belt - The lithosphere is dragged along with the mantle - Continents have combined, separated, and recombined over millions of years • Pangaea = all landmasses were joined into 1 supercontinent 225 million years ...
... - Pushing the mantle’s soft rock up (as it warms) and down (as it cools) like a conveyor belt - The lithosphere is dragged along with the mantle - Continents have combined, separated, and recombined over millions of years • Pangaea = all landmasses were joined into 1 supercontinent 225 million years ...
Quiz 1 Rocks and Plates
... B. two, converging, oceanic plates meeting head-on and piling up into a mid-ocean ridge C. a divergent boundary where the continental plate changes to an oceanic plate D. a deep, vertical fault along which two plates slide past one another in opposite directions Mount St. Helens and the other Cascad ...
... B. two, converging, oceanic plates meeting head-on and piling up into a mid-ocean ridge C. a divergent boundary where the continental plate changes to an oceanic plate D. a deep, vertical fault along which two plates slide past one another in opposite directions Mount St. Helens and the other Cascad ...
Seafloor Spreading and Plate Tectonics
... Relative Motions at Transform Faults • Note: relative motion between two displaced features is in opposite direction to that which would have produced such an offset in the absence of seafloor spreading • Compare direction of red arrows on left panel to yellow arrows on right panel (San Andreas Fau ...
... Relative Motions at Transform Faults • Note: relative motion between two displaced features is in opposite direction to that which would have produced such an offset in the absence of seafloor spreading • Compare direction of red arrows on left panel to yellow arrows on right panel (San Andreas Fau ...
Plate Tectonics and Continental Drift
... (1) Just below the crust (2) Relatively cold by virtue of being near the cool surface (3) Is chemically different than most of the mantle due to the extraction of melt that produced the crust, and is therefore thought to be anomalously strong (i.e., resistant to deformation). ...
... (1) Just below the crust (2) Relatively cold by virtue of being near the cool surface (3) Is chemically different than most of the mantle due to the extraction of melt that produced the crust, and is therefore thought to be anomalously strong (i.e., resistant to deformation). ...
PLATE TECTONICS
... up of rocks that are less dense than oceanic crust – The ocean floor is made up of oceanic crust, which is made up of rocks that are more dense than continental crust ...
... up of rocks that are less dense than oceanic crust – The ocean floor is made up of oceanic crust, which is made up of rocks that are more dense than continental crust ...
Bedrock Geologic Map of Saratoga National Historical Park and
... The onslaught of the Taconic Orogeny closed up the western portion of the Iapetus Ocean, eventually resulting in the collision of the Taconia volcanic island arc with the edge of the Laurentian shelf. This slow process was accompanied by the depression of the shallow shelf as Taconia approached. The ...
... The onslaught of the Taconic Orogeny closed up the western portion of the Iapetus Ocean, eventually resulting in the collision of the Taconia volcanic island arc with the edge of the Laurentian shelf. This slow process was accompanied by the depression of the shallow shelf as Taconia approached. The ...
Layers of the Earth
... thin compared to the other layers. The crust is only about 3-5 miles (8 km) thick under the oceans (oceanic crust) and about 25 miles (32 km) thick under the continents (continental crust). The crust is made up of mainly silicate rocks (about 85%). Continental crust is mostly granite while oceanic c ...
... thin compared to the other layers. The crust is only about 3-5 miles (8 km) thick under the oceans (oceanic crust) and about 25 miles (32 km) thick under the continents (continental crust). The crust is made up of mainly silicate rocks (about 85%). Continental crust is mostly granite while oceanic c ...
classifying rocks
... CLASSIFYING ROCKS It is much cooler on Earth’s surface than it is below. When lava cools on Earth’s surface, it solidifies very quickly. This does not give mineral crystals very much time to grow, so they will be quite small. Sometimes, they will cool so quickly that no crystals will form at all. In ...
... CLASSIFYING ROCKS It is much cooler on Earth’s surface than it is below. When lava cools on Earth’s surface, it solidifies very quickly. This does not give mineral crystals very much time to grow, so they will be quite small. Sometimes, they will cool so quickly that no crystals will form at all. In ...
F SR Faults and Folds Lab
... 12. Place the three layers of foam, in different colors, on top of each other. Push in equally on both ends, moving each end in about six inches. Make a drawing of the fold here, and label it as an “anticline”. Label the areas of the anticline that undergo tension or compression. ...
... 12. Place the three layers of foam, in different colors, on top of each other. Push in equally on both ends, moving each end in about six inches. Make a drawing of the fold here, and label it as an “anticline”. Label the areas of the anticline that undergo tension or compression. ...
Introducing Igneous Rocks
... part of the Earth is rigid (it doesn’t flow) so it cools by conduction. Deeper layers are ductile (they can flow) so they lose heat by convection. As you go down into the Earth, the temperature that rocks melt changes. We can show this on the geotherm graph using a melting line. If the geotherm cros ...
... part of the Earth is rigid (it doesn’t flow) so it cools by conduction. Deeper layers are ductile (they can flow) so they lose heat by convection. As you go down into the Earth, the temperature that rocks melt changes. We can show this on the geotherm graph using a melting line. If the geotherm cros ...
Introduction to the British Tertiary
... dominantly basaltic lava flows cover extensive areas in Skye and Mull. Laterally extensive swarms of basaltic dykes are most intense near Skye, Rum, Mull, and Arran but extend to the Outer Hebrides, southern Scotland, Cleveland in north Yorkshire and parts of North Wales and central England. Central ...
... dominantly basaltic lava flows cover extensive areas in Skye and Mull. Laterally extensive swarms of basaltic dykes are most intense near Skye, Rum, Mull, and Arran but extend to the Outer Hebrides, southern Scotland, Cleveland in north Yorkshire and parts of North Wales and central England. Central ...
Algoman orogeny
The Algoman orogeny, known as the Kenoran orogeny in Canada, was an episode of mountain-building (orogeny) during the Late Archean Eon that involved repeated episodes of continental collisions, compressions and subductions. The Superior province and the Minnesota River Valley terrane collided about 2,700 to 2,500 million years ago. The collision folded the Earth's crust and produced enough heat and pressure to metamorphose the rock. Blocks were added to the Superior province along a 1,200 km (750 mi) boundary that stretches from present-day eastern South Dakota into the Lake Huron area. The Algoman orogeny brought the Archaen Eon to a close, about 2,500 million years ago; it lasted less than 100 million years and marks a major change in the development of the earth’s crust.The Canadian shield contains belts of metavolcanic and metasedimentary rocks formed by the action of metamorphism on volcanic and sedimentary rock. The areas between individual belts consist of granites or granitic gneisses that form fault zones. These two types of belts can be seen in the Wabigoon, Quetico and Wawa subprovinces; the Wabigoon and Wawa are of volcanic origin and the Quetico is of sedimentary origin. These three subprovinces lie linearly in southwestern- to northeastern-oriented belts about 140 km (90 mi) wide on the southern portion of the Superior Province.The Slave province and portions of the Nain province were also affected. Between about 2,000 and 1,700 million years ago these combined with the Sask and Wyoming cratons to form the first supercontinent, the Kenorland supercontinent.