Types of Mountains
... ejected from volcano 2. Ash: less than 2 mm in diameter 3. Dust: less than .25 mm diameter 4. Bombs: spinning cooling large blocks of material, cool to circular shape 5. Blocks: very large, as big as houses ...
... ejected from volcano 2. Ash: less than 2 mm in diameter 3. Dust: less than .25 mm diameter 4. Bombs: spinning cooling large blocks of material, cool to circular shape 5. Blocks: very large, as big as houses ...
Plate Tectonics Notes
... • Wegener found similar fossils on different continents • The fossils that he found could probably not have spread between continents ...
... • Wegener found similar fossils on different continents • The fossils that he found could probably not have spread between continents ...
Inside Edition
... Planetesimals joined together to form protoplanets which were molten, at first Dense materials like iron and nickel would tend to sink towards the middle As cooling progressed lighter materials floated to the surface like “scum” and formed the crust This was all completed about 4 billion years ago ...
... Planetesimals joined together to form protoplanets which were molten, at first Dense materials like iron and nickel would tend to sink towards the middle As cooling progressed lighter materials floated to the surface like “scum” and formed the crust This was all completed about 4 billion years ago ...
12.479 Trace-Element Geochemistry
... MORB magma erupts into seawater is unequivocally a quenched melt. However, this glass, and MORB whole-rocks in general, are characterized by relatively low (i.e., depleted) abundances of highly incompatible elements; this is a paradoxical result since by definition highly incompatible elements are e ...
... MORB magma erupts into seawater is unequivocally a quenched melt. However, this glass, and MORB whole-rocks in general, are characterized by relatively low (i.e., depleted) abundances of highly incompatible elements; this is a paradoxical result since by definition highly incompatible elements are e ...
Plate Tectonic Quiz Review
... shows evidence that ___. A. Antarctica was once located in a warm area closer to the equator B. Ferns grow in cool climates C. Fossils cannot tell us anything about climate D. Sid the sloth picked the ferns for Granny and ...
... shows evidence that ___. A. Antarctica was once located in a warm area closer to the equator B. Ferns grow in cool climates C. Fossils cannot tell us anything about climate D. Sid the sloth picked the ferns for Granny and ...
Plate Tectonics PPT
... billions of years ago, soon after the Earth formed. This crust is not a solid shell; it is broken up into huge, thick plates that drift atop the soft, underlying mantle. ...
... billions of years ago, soon after the Earth formed. This crust is not a solid shell; it is broken up into huge, thick plates that drift atop the soft, underlying mantle. ...
The Birth of Plate Tectonics
... oceanic Nazca Plate is pushed toward and beneath the continental portion of the South American Plate, is an example of a convergent plate boundary. ...
... oceanic Nazca Plate is pushed toward and beneath the continental portion of the South American Plate, is an example of a convergent plate boundary. ...
igneous rocks - Te reo Māori
... in the upper parts of the mantle or in the lowest areas of the crust usually at a depth of 50 to 200 kilometres. ...
... in the upper parts of the mantle or in the lowest areas of the crust usually at a depth of 50 to 200 kilometres. ...
Environmental Science
... The Earth’s outer core is a dense liquid layer. At the center of the Earth is a dense, solid inner core, which is made up mostly of iron and nickel. • Although the temperature of the inner core is estimated to be between 4,000°C to 5,000°C, it is solid because it is under enormous pressure. • The in ...
... The Earth’s outer core is a dense liquid layer. At the center of the Earth is a dense, solid inner core, which is made up mostly of iron and nickel. • Although the temperature of the inner core is estimated to be between 4,000°C to 5,000°C, it is solid because it is under enormous pressure. • The in ...
STUDY GUIDE FOR TEST 3 (PLATE TECTONICS, GEOLOGIC TIME
... have done it repeatedly? What are the observations that suggest that continents have moved across latitudes? 2. Sea-floor spreading If the oceanic crust off the North American continental shelf is basalt, but the nearest volcano is in the Mid-Atlantic Ridge, how did the basalt get to the edge of Nor ...
... have done it repeatedly? What are the observations that suggest that continents have moved across latitudes? 2. Sea-floor spreading If the oceanic crust off the North American continental shelf is basalt, but the nearest volcano is in the Mid-Atlantic Ridge, how did the basalt get to the edge of Nor ...
File
... moving toward each other. One type of convergent boundaries is when continental crust converges and collides with another continental crust. Because continental rocks are too buoyant to be forced into the mantle, the colliding edges of the continents are crumpled and uplifted to form a ...
... moving toward each other. One type of convergent boundaries is when continental crust converges and collides with another continental crust. Because continental rocks are too buoyant to be forced into the mantle, the colliding edges of the continents are crumpled and uplifted to form a ...
Chapter 18 PPT
... • The Hawaiian islands are at one end of the Hawaiian-Emperor volcanic chain. The oldest seamount, Meiji, is at the other end of the chain and is about 80 million years old. ...
... • The Hawaiian islands are at one end of the Hawaiian-Emperor volcanic chain. The oldest seamount, Meiji, is at the other end of the chain and is about 80 million years old. ...
Unit 5 – Planet Earth
... move on the Earth’s surface. Animation: http://www.ucmp.berkeley.edu/geology/anim1.html ...
... move on the Earth’s surface. Animation: http://www.ucmp.berkeley.edu/geology/anim1.html ...
Types of plate boundaries
... • Deep-Ocean Trenches • Like deep canyons that form in the ocean floor as a plate sinks • Most are found in the Pacific Ocean • The Mariana Trench is where the Pacific Plate is sinking under the ...
... • Deep-Ocean Trenches • Like deep canyons that form in the ocean floor as a plate sinks • Most are found in the Pacific Ocean • The Mariana Trench is where the Pacific Plate is sinking under the ...
Notebook #4 Catastrophic Events Affect Diversity GT
... * When these events are global in nature then mass extinctions can occur Impact of an asteroid or comet ...
... * When these events are global in nature then mass extinctions can occur Impact of an asteroid or comet ...
![Structure of Earth notes part 2 [Compatibility Mode]](http://s1.studyres.com/store/data/016249846_1-b55a4dc67cd5eaca487cb0e59fb7e496-300x300.png)
Structure of Earth notes part 2 [Compatibility Mode]
... denser plate sinks in a process called subduction. • The subduction process produces magmas through other processes (that we will discuss as needed later.) • Only oceanic plate can subduct. Continental crust is too thick and low density to sink. (acts like a float). ...
... denser plate sinks in a process called subduction. • The subduction process produces magmas through other processes (that we will discuss as needed later.) • Only oceanic plate can subduct. Continental crust is too thick and low density to sink. (acts like a float). ...
Plate Tectonics
... cracked shell of an egg •the pieces of the shell are Earth's tectonic plates -- there are 12 major ones -- and they float along on vast convection currents in the asthenosphere •the asthenosphere churns like a fluid ...
... cracked shell of an egg •the pieces of the shell are Earth's tectonic plates -- there are 12 major ones -- and they float along on vast convection currents in the asthenosphere •the asthenosphere churns like a fluid ...
Indirect evidence
... 7. Pressure increases the deeper you go because there is more and more weight on top. If you go down one mile, there is a mile of rock above pushing down. ...
... 7. Pressure increases the deeper you go because there is more and more weight on top. If you go down one mile, there is a mile of rock above pushing down. ...
File
... the mantle, setting the outer crust into motion. Once the descending plate starts to cool and fall, it becomes more dense, and essentially pulls the rest of the plate along after it in a process called slab pull. Convection currents in the asthenosphere are thus set in motion by the transfer of ener ...
... the mantle, setting the outer crust into motion. Once the descending plate starts to cool and fall, it becomes more dense, and essentially pulls the rest of the plate along after it in a process called slab pull. Convection currents in the asthenosphere are thus set in motion by the transfer of ener ...
Name___________________________ Date: Plate Tectonics
... When an oceanic crust collides with a continental crust, the ocean crust sinks (subducts) because it is thinner and more dense. 8. What happens along a subduction zone? Subduction zones occur at a convergent boundary between an oceanic plate and continental plate. The more dense oceanic crust sinks. ...
... When an oceanic crust collides with a continental crust, the ocean crust sinks (subducts) because it is thinner and more dense. 8. What happens along a subduction zone? Subduction zones occur at a convergent boundary between an oceanic plate and continental plate. The more dense oceanic crust sinks. ...
Chapter 3 Test Review
... A. a convergent boundary B. a strike-slip boundary C. a transform boundary D. a divergent boundary ...
... A. a convergent boundary B. a strike-slip boundary C. a transform boundary D. a divergent boundary ...
Plate Tectonics I
... able to show that this was physically not possible. The proposed mechanism was thus discredited, so the entire hypothesis was set aside (by most!) as yet more wishful thinking. ...
... able to show that this was physically not possible. The proposed mechanism was thus discredited, so the entire hypothesis was set aside (by most!) as yet more wishful thinking. ...
Large igneous province
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive), when hot magma extrudes from inside the Earth and flows out. The source of many or all LIPs is variously attributed to mantle plumes or to processes associated with plate tectonics. Types of LIPs can include large volcanic provinces (LVP), created through flood basalt and large plutonic provinces (LPP). Eleven distinct flood basalt episodes occurred in the past 250 million years, creating volcanic provinces, which coincided with mass extinctions in prehistoric times. Formation depends on a range of factors, such as continental configuration, latitude, volume, rate, duration of eruption, style and setting (continental vs. oceanic), the preexisting climate state, and the biota resilience to change.