Earth Science Library wk 8.cwk
... Thus it cannot be subducted very far. Thus when two continents collide neither plate dives into the mantle. Instead, the plates smash into each other greatly deforming and folding up the rocks near the plate ...
... Thus it cannot be subducted very far. Thus when two continents collide neither plate dives into the mantle. Instead, the plates smash into each other greatly deforming and folding up the rocks near the plate ...
EQ AND INTERIOR online
... 12. What do we call this zone of shallow, intermediate, and deep focus earthquakes? Why does this occur? 13. Go to the IRIS earthquake website: http://ds.iris.edu/seismon/ The map shows recent earthquake activity (red circles occurred today, etc.) so you can see just how common earthquakes are (over ...
... 12. What do we call this zone of shallow, intermediate, and deep focus earthquakes? Why does this occur? 13. Go to the IRIS earthquake website: http://ds.iris.edu/seismon/ The map shows recent earthquake activity (red circles occurred today, etc.) so you can see just how common earthquakes are (over ...
view PDF
... current regional geological setting of Namibia as well as the local geology of all the settlements including Windhoek. If we consider the whole earth, it has long been recognised that the earth is divided into several plates which move against or away from one another. Today there is evidence which ...
... current regional geological setting of Namibia as well as the local geology of all the settlements including Windhoek. If we consider the whole earth, it has long been recognised that the earth is divided into several plates which move against or away from one another. Today there is evidence which ...
Webquest 14
... 9. On the “Spreading the Motion” screen, fill in the blanks: “Tectonic plates are somewhat _______________. The motion between them is not confined entirely to their own boundaries. The motion extends into their _______________ and is spread out among a system of __________________ all around the pl ...
... 9. On the “Spreading the Motion” screen, fill in the blanks: “Tectonic plates are somewhat _______________. The motion between them is not confined entirely to their own boundaries. The motion extends into their _______________ and is spread out among a system of __________________ all around the pl ...
Inside the Restless Earth
... c. At transform boundaries the plates are moving sideways past each other and large earthquakes can occur. The San Andreas Fault in CA is an example. 13. Why do tectonic plates move? Explain. About how much do tectonic plates move per year? Tectonic plates move because convection occurs in the mantl ...
... c. At transform boundaries the plates are moving sideways past each other and large earthquakes can occur. The San Andreas Fault in CA is an example. 13. Why do tectonic plates move? Explain. About how much do tectonic plates move per year? Tectonic plates move because convection occurs in the mantl ...
Complete Earth.s struct
... • These are large underwater mountain ranges that are thousands of kilometres long. They cut through the abyssal plains. They can be so high that they emerge from the water and create islands, as is the case of Iceland. • Ridges have a fissure down their middle, called a rift. Rift ...
... • These are large underwater mountain ranges that are thousands of kilometres long. They cut through the abyssal plains. They can be so high that they emerge from the water and create islands, as is the case of Iceland. • Ridges have a fissure down their middle, called a rift. Rift ...
The Engine that Drives the Earth
... Earth’s mantle is the solid, rocky interior of our planet that extends from the base of the crust all the way down to Earth’s core, about 2,900 kilometers (1,800 miles) below the surface. Although they are solid, the rocks in Earth’s mantle can deform and flow by viscous creep over long time periods ...
... Earth’s mantle is the solid, rocky interior of our planet that extends from the base of the crust all the way down to Earth’s core, about 2,900 kilometers (1,800 miles) below the surface. Although they are solid, the rocks in Earth’s mantle can deform and flow by viscous creep over long time periods ...
Chap 01 Earth Structure
... Average density of Earth = 5.5 g / cm3 Density of crust: continents = 2.7 g / cm3 ocean floor = 3.3 g / cm3 this difference reflects mostly a change in composition, some effect from pressure What does it imply that oceanic and continental crust are MUCH lower density than the average? ...
... Average density of Earth = 5.5 g / cm3 Density of crust: continents = 2.7 g / cm3 ocean floor = 3.3 g / cm3 this difference reflects mostly a change in composition, some effect from pressure What does it imply that oceanic and continental crust are MUCH lower density than the average? ...
Surface-interior exchange on rocky and icy planets
... Eu is a spectroscopic proxy for r –process elements such as U & Th. Eu/Si trends indicate that the young Galaxy is Si – poor. Effects on present-day conditions: Including cosmochemical trends in [U] and [Th] lowers mantle temperature (Tm) by up to 50 K for young planets, while raising Tm by up to 40 ...
... Eu is a spectroscopic proxy for r –process elements such as U & Th. Eu/Si trends indicate that the young Galaxy is Si – poor. Effects on present-day conditions: Including cosmochemical trends in [U] and [Th] lowers mantle temperature (Tm) by up to 50 K for young planets, while raising Tm by up to 40 ...
Fundamental discoveries about the growth and recycling of continents
... of geologic time, then during the past 2.5 billion years (~half of Earth history) about 50% of the mass of terrestrial crust made before or during this time has been recycled. Intriguingly, present estimates of the global rate of formation of new or juvenile terrestrial crust is also about 1.5 km3/y ...
... of geologic time, then during the past 2.5 billion years (~half of Earth history) about 50% of the mass of terrestrial crust made before or during this time has been recycled. Intriguingly, present estimates of the global rate of formation of new or juvenile terrestrial crust is also about 1.5 km3/y ...
5th EDITION - Gill Education
... ranges were formed during the Alpine foldings only about 35 million years ago. They are very high because they have not yet been worn down as much as other fold ...
... ranges were formed during the Alpine foldings only about 35 million years ago. They are very high because they have not yet been worn down as much as other fold ...
11 Sea Floor
... • Volcanoes outgasses water to fill oceans • Average depth = 4 km • Continental Margins mark edge of continent from deep sea floor – 2 types of margins ...
... • Volcanoes outgasses water to fill oceans • Average depth = 4 km • Continental Margins mark edge of continent from deep sea floor – 2 types of margins ...
Plate Tectonics – Guided Notes
... 1. _________________ ___________________ : Occur where two plates slide past one another. • They move in opposite directions or in the same direction at different rates. Features: _____________________ The ________ ______________ ______________ is part of a transform plate boundary. It has been the ...
... 1. _________________ ___________________ : Occur where two plates slide past one another. • They move in opposite directions or in the same direction at different rates. Features: _____________________ The ________ ______________ ______________ is part of a transform plate boundary. It has been the ...
Chapter 8 Notes-Student Guide
... 4. Tectonic plates move in different directions and at different speeds. As a result, numerous features called faults exist in the Earth’s crust. ...
... 4. Tectonic plates move in different directions and at different speeds. As a result, numerous features called faults exist in the Earth’s crust. ...
class outline - WordPress.com
... Preclass video: Students view Tectonic Plates and answer related questions in an online quiz (for example see https://geosciencevideos.files.wordpress.com/2015/05/tectonic_plates_quiz.pdf). ...
... Preclass video: Students view Tectonic Plates and answer related questions in an online quiz (for example see https://geosciencevideos.files.wordpress.com/2015/05/tectonic_plates_quiz.pdf). ...
Evolution of the Pacific Margin: Progress and Future
... Extension of transform margins takes about 8% of the total length of the current continental margins that makes this type of plate boundaries important. However, all the geodynamic reconstructions that have been published until presently use the subduction model for all the boundaries between ocea ...
... Extension of transform margins takes about 8% of the total length of the current continental margins that makes this type of plate boundaries important. However, all the geodynamic reconstructions that have been published until presently use the subduction model for all the boundaries between ocea ...
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. ...
Mr. Phillips Earth Structure and Plate Tectonics Reading Questions
... reversed itself several times in its past. a. magnetic field b. core c. gravity ___ 7. The Glomar Challenger aided the theory of plate tectonics by providing ___. a. high altitude photos of existing continents b. samples of sediment cores from different locations between S. American and Africa c. sa ...
... reversed itself several times in its past. a. magnetic field b. core c. gravity ___ 7. The Glomar Challenger aided the theory of plate tectonics by providing ___. a. high altitude photos of existing continents b. samples of sediment cores from different locations between S. American and Africa c. sa ...
Section 20.1 - CPO Science
... A moving line of grocery carts is a good analogy of a moving lithospheric plate. Although a plate may be moving as a single unit, its boundaries act like they were made of many small sections like the line of carts. ...
... A moving line of grocery carts is a good analogy of a moving lithospheric plate. Although a plate may be moving as a single unit, its boundaries act like they were made of many small sections like the line of carts. ...
Lexie Carletti
... I am honored that you have chosen me to be your resource for these questions. As you may know many earthquakes occur much around the United States and with preparedness, awareness, and knowledge you can save many Americans lives. So with the help of these answers they will teach you how to better in ...
... I am honored that you have chosen me to be your resource for these questions. As you may know many earthquakes occur much around the United States and with preparedness, awareness, and knowledge you can save many Americans lives. So with the help of these answers they will teach you how to better in ...
This Dynamic Planet
... Pacific plate over a mantle magma source that is relatively fixed in one spot, called a hotspot. These features are thought by many geologists to be caused by long, thin convection plumes rising through the mantle. In the overlying plate, partial melting produces new magma that collects into blobs t ...
... Pacific plate over a mantle magma source that is relatively fixed in one spot, called a hotspot. These features are thought by many geologists to be caused by long, thin convection plumes rising through the mantle. In the overlying plate, partial melting produces new magma that collects into blobs t ...
This Dynamic Planet
... Impact Craters Cratering by impact of extraterrestrial comets or asteroids (bolides) has been a significant process on the rocky moons and planets of our solar system. Impact cratering was particularly important during the first 500 million years of the Earth’s history. Although many small meteorite ...
... Impact Craters Cratering by impact of extraterrestrial comets or asteroids (bolides) has been a significant process on the rocky moons and planets of our solar system. Impact cratering was particularly important during the first 500 million years of the Earth’s history. Although many small meteorite ...
Why does Earth`s crust move? The mystery of the moving crust has
... results amazed everyone. It was obvious that there were mountains on the sea floor. Moreover, there were long mountain ranges or ridges in some places, just like the mountain ranges that existed on land. Scientists identified a mountain ridge that stretched from north to south along the middle of th ...
... results amazed everyone. It was obvious that there were mountains on the sea floor. Moreover, there were long mountain ranges or ridges in some places, just like the mountain ranges that existed on land. Scientists identified a mountain ridge that stretched from north to south along the middle of th ...
Post-glacial rebound
Post-glacial rebound (sometimes called continental rebound) is the rise of land masses that were depressed by the huge weight of ice sheets during the last glacial period, through a process known as isostatic depression. Post-glacial rebound and isostatic depression are different parts of a process known as either glacial isostasy, glacial isostatic adjustment, or glacioisostasy. Glacioisostasy is the solid Earth deformation associated with changes in ice mass distribution. The most obvious and direct affects of post-glacial rebound are readily apparent in northern Europe (especially Scotland, Estonia, Latvia, Fennoscandia, and northern Denmark), Siberia, Canada, the Great Lakes of Canada and the United States, the coastal region of the US state of Maine, parts of Patagonia, and Antarctica. However, through processes known as ocean siphoning and continental levering, the effects of post-glacial rebound on sea-level are felt globally far from the locations of current and former ice sheets.