Alfred Wegener's Theory of Continental Drift Became Modern Plate
... Active Sea Floor Spreading that Drives Africa and South America Apart ...
... Active Sea Floor Spreading that Drives Africa and South America Apart ...
Plate Tectonics Lecture 7: Structures
... High confining pressure, high temperature, low strain rates (deep crust and mantle) = ductile deformation Brittle-ductile transition occurs at about 15km Folds: an individual bend or warp in a layered rock caused by plastic deformation Synclines: concave, trough-like folds (inner rocks are youngest) ...
... High confining pressure, high temperature, low strain rates (deep crust and mantle) = ductile deformation Brittle-ductile transition occurs at about 15km Folds: an individual bend or warp in a layered rock caused by plastic deformation Synclines: concave, trough-like folds (inner rocks are youngest) ...
Chapter 16 - Cenozoic - Tertiary
... continued leading to present configuration of continents. 3. Cenozoic orogenies occur in 2 belts: one circling the Pacific O; other E-W from Alps to Himalayas 4. Laramide orogeny occurred in western N America (Late Cretaceous to Eocene) 5. subduction zone present along western edge of US until ...
... continued leading to present configuration of continents. 3. Cenozoic orogenies occur in 2 belts: one circling the Pacific O; other E-W from Alps to Himalayas 4. Laramide orogeny occurred in western N America (Late Cretaceous to Eocene) 5. subduction zone present along western edge of US until ...
Why is Earth Unique? - Bakersfield College
... • Continued convergence producing the Cascade Volcanoes • subduction of the Farallon plate stratacomposite volcanoes • Sierra Nevada batholith, Idaho batholith faulted and uplifted • Mesozoic batholiths exposed to the surface • The onset of the San Andreas Fault • A portion of California (North Am ...
... • Continued convergence producing the Cascade Volcanoes • subduction of the Farallon plate stratacomposite volcanoes • Sierra Nevada batholith, Idaho batholith faulted and uplifted • Mesozoic batholiths exposed to the surface • The onset of the San Andreas Fault • A portion of California (North Am ...
Powerpoint Presentation Physical Geology, 10/e
... Geologic Structures • Geologic structures are dynamically-produced patterns or arrangements of rock or sediment that result from, and give information about, forces within the Earth – Produced as rocks change shape and orientation in response ...
... Geologic Structures • Geologic structures are dynamically-produced patterns or arrangements of rock or sediment that result from, and give information about, forces within the Earth – Produced as rocks change shape and orientation in response ...
time
... Cross-cutting relationships: A rock unit is always older than any feature which cuts across or disrupts it. ...
... Cross-cutting relationships: A rock unit is always older than any feature which cuts across or disrupts it. ...
Sample final
... of the questions chosen. Make sure your answer is in paragraph form. 15. Look at rock samples A, B and C. Determine if they are sedimentary, metamorphic or igneous. Explain, for each sample, how you determined its type; you cannot use “elimination” since there may be two of one type and none of anot ...
... of the questions chosen. Make sure your answer is in paragraph form. 15. Look at rock samples A, B and C. Determine if they are sedimentary, metamorphic or igneous. Explain, for each sample, how you determined its type; you cannot use “elimination” since there may be two of one type and none of anot ...
Weathering, Soil, and Erosion Study Guide
... Weathering, Soil, and Erosion Study Guide 1. Define upward expansion. a. Rock is lifted up and the rocks above it are worn away. The rocks form sheets and break off (exfoliation). 2. Define erosion and give an example of how this occurs. a. The removal and transport of materials by natural agents su ...
... Weathering, Soil, and Erosion Study Guide 1. Define upward expansion. a. Rock is lifted up and the rocks above it are worn away. The rocks form sheets and break off (exfoliation). 2. Define erosion and give an example of how this occurs. a. The removal and transport of materials by natural agents su ...
Igneous Rocks - sir
... Partial melting and magma formation formation of granitic magmas most likely form as the end product of crystallization of andesitic magma granitic magmas are more viscous than other magmas—tend to lose their mobility before reaching the surface. produce large plutonic structures ...
... Partial melting and magma formation formation of granitic magmas most likely form as the end product of crystallization of andesitic magma granitic magmas are more viscous than other magmas—tend to lose their mobility before reaching the surface. produce large plutonic structures ...
Chapter 21 Notes - Valdosta State University
... oceans of the world. At these ridges, hot magma rises to the surface and is cooled, forming new surface rock. The existing rock surrounding the ridge is then pushed away from the ridge causing the entire ocean floor to move away from the ridge. Evidence that supports the idea of seafloor spreading i ...
... oceans of the world. At these ridges, hot magma rises to the surface and is cooled, forming new surface rock. The existing rock surrounding the ridge is then pushed away from the ridge causing the entire ocean floor to move away from the ridge. Evidence that supports the idea of seafloor spreading i ...
Plate Boundaries
... Occurs because oceanic crust is more dense As oceanic crust subducts into the mantle it melts Melted oceanic crust rise and forms mountains and volcanoes (ex. Andes Mts.) – called continental volcanic arc ...
... Occurs because oceanic crust is more dense As oceanic crust subducts into the mantle it melts Melted oceanic crust rise and forms mountains and volcanoes (ex. Andes Mts.) – called continental volcanic arc ...
Chapter 1
... 2) T or F: The asthenosphere is a relatively cool and rigid shell that overlies the lithosphere. False 3) T or F: The doctrine of uniformitarianism implies that the current forces and processes shaping the Earth have been operating for a very long time. True 5) T or F: The currently accepted age of ...
... 2) T or F: The asthenosphere is a relatively cool and rigid shell that overlies the lithosphere. False 3) T or F: The doctrine of uniformitarianism implies that the current forces and processes shaping the Earth have been operating for a very long time. True 5) T or F: The currently accepted age of ...
Scott Foresman Science
... speed and direction. Some stop completely when they reach the outer core. By studying the vibrations from earthquakes everywhere, scientists can learn about Earth’s layers. Scientists can also learn about the mantle and core through laboratory experiments. Materials that are likely inside Earth are ...
... speed and direction. Some stop completely when they reach the outer core. By studying the vibrations from earthquakes everywhere, scientists can learn about Earth’s layers. Scientists can also learn about the mantle and core through laboratory experiments. Materials that are likely inside Earth are ...
Exam Block #3
... • Metamorphism progresses in increments from lowgrade to high-grade, but the rock remains solid! ...
... • Metamorphism progresses in increments from lowgrade to high-grade, but the rock remains solid! ...
Practice Exam #1
... 4. Why must a planet with divergent plate boundaries also have convergent plate boundaries? 5. How does the temperature of a substance affect its volume, density and buoyancy? 6. What is the energy source and driving mechanism for the movement of plates? Describe how this process works. 7. Two ident ...
... 4. Why must a planet with divergent plate boundaries also have convergent plate boundaries? 5. How does the temperature of a substance affect its volume, density and buoyancy? 6. What is the energy source and driving mechanism for the movement of plates? Describe how this process works. 7. Two ident ...
Geology of the Cripple Creek gold
... The Cresson Pipe, a lamprophyre breccia, represents one of the more notable geologic features in the district. Lamprophyric rocks are the youngest known igneous rocks exposed in the district. Although they constitute only 1-2% of the volume of igneous rocks in the district, mineralized lamprophyres ...
... The Cresson Pipe, a lamprophyre breccia, represents one of the more notable geologic features in the district. Lamprophyric rocks are the youngest known igneous rocks exposed in the district. Although they constitute only 1-2% of the volume of igneous rocks in the district, mineralized lamprophyres ...
Semester 01 Syllabus/Study Guide Accelerated Earth Science
... 5. Tutoring is available Wednesdays at 8:20 a.m. and other days by appointment. No tutoring will be available on Fridays. 6. Students will have access to USA Test Prep. More information will follow. 7. On-Line Textbook – www.pearsonsuccessnet.com: username: lanierms, password: gwinnett Rocks and the ...
... 5. Tutoring is available Wednesdays at 8:20 a.m. and other days by appointment. No tutoring will be available on Fridays. 6. Students will have access to USA Test Prep. More information will follow. 7. On-Line Textbook – www.pearsonsuccessnet.com: username: lanierms, password: gwinnett Rocks and the ...
Continental Formation - Department of Geosciences
... • In the Sierras, we are confident that pre-existing crustal materials have been involved in a second stage melting process that made the granitic “batholith” • We know now that some 35 km of the crust is granitic • Since at least that much residue is required, and it had to be located at 35-70 (or ...
... • In the Sierras, we are confident that pre-existing crustal materials have been involved in a second stage melting process that made the granitic “batholith” • We know now that some 35 km of the crust is granitic • Since at least that much residue is required, and it had to be located at 35-70 (or ...
Mountain-building processes
... How to reduce the negative impact of earthquakes? __________ Prediction Scientific methods have been developed to predict when and where hazards will occur. ...
... How to reduce the negative impact of earthquakes? __________ Prediction Scientific methods have been developed to predict when and where hazards will occur. ...
Oxford University Press 2001
... How to reduce the negative impact of earthquakes? __________ Prediction Scientific methods have been developed to predict when and where hazards will occur. ...
... How to reduce the negative impact of earthquakes? __________ Prediction Scientific methods have been developed to predict when and where hazards will occur. ...
see powerpoint
... The process by which new oceanic crust forms at mid-ocean ridges as tectonic plates are pulled away from each other. ...
... The process by which new oceanic crust forms at mid-ocean ridges as tectonic plates are pulled away from each other. ...
HW #2 Earthquake Causes 1. Describe the process causing
... 1. Describe the process causing earthquakes. Rising of the earth’s molten mantle causes the earth’s crust to spread outward at mid-ocean ridges, called rift valleys. Pieces of the earth’s crust, called plates, move relative to one another. Friction forces develop at the boundaries between plates. Su ...
... 1. Describe the process causing earthquakes. Rising of the earth’s molten mantle causes the earth’s crust to spread outward at mid-ocean ridges, called rift valleys. Pieces of the earth’s crust, called plates, move relative to one another. Friction forces develop at the boundaries between plates. Su ...
BUILDING STONES OF THE BROOKLYN COLLEGE CAMPUS
... limestone with irregular, angular shapes. When such deposits of broken rock are cemented together, they form a rock called breccia in which the irregular, angular fragments are still evident (see Examples of Grainy Textures Plate). Pressure increases the solubility of calcite, and so the burial of ...
... limestone with irregular, angular shapes. When such deposits of broken rock are cemented together, they form a rock called breccia in which the irregular, angular fragments are still evident (see Examples of Grainy Textures Plate). Pressure increases the solubility of calcite, and so the burial of ...
Deep crustal structure of the northeastern margin of the Arabian
... UAE-Oman mountain belt is reasonably well known through the exploitation of a diverse range of techniques, information on deeper structure remains little. Moreover, the mechanisms by which dense oceanic crustal and mantle rocks are emplaced onto less dense and more buoyant continental crust are stil ...
... UAE-Oman mountain belt is reasonably well known through the exploitation of a diverse range of techniques, information on deeper structure remains little. Moreover, the mechanisms by which dense oceanic crustal and mantle rocks are emplaced onto less dense and more buoyant continental crust are stil ...
building stones of the brooklyn college campus
... limestone with irregular, angular shapes. When such deposits of broken rock are cemented together, they form a rock called breccia in which the irregular, angular fragments are still evident (see Examples of Grainy Textures Plate). Pressure increases the solubility of calcite, and so the burial of ...
... limestone with irregular, angular shapes. When such deposits of broken rock are cemented together, they form a rock called breccia in which the irregular, angular fragments are still evident (see Examples of Grainy Textures Plate). Pressure increases the solubility of calcite, and so the burial of ...
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.