Plate Tectonic Notes
... through the ___________________________ toward surface, causing the convection currents, ___________________________ •____________________________ -string of undersea divergent boundaries where new ocean crust is formed. •These are called spreading centers and are associated with mountainous areas o ...
... through the ___________________________ toward surface, causing the convection currents, ___________________________ •____________________________ -string of undersea divergent boundaries where new ocean crust is formed. •These are called spreading centers and are associated with mountainous areas o ...
Key concepts
... -know the difference between oceanic crust & continental crust -know how pressure and temperature change as you move through the layers of the earth and their effects on the behavior of rocks -know the internal source of heat inside the earth and how heat moves by conduction or convection -know how ...
... -know the difference between oceanic crust & continental crust -know how pressure and temperature change as you move through the layers of the earth and their effects on the behavior of rocks -know the internal source of heat inside the earth and how heat moves by conduction or convection -know how ...
Part2-Summary of Sediments
... continental shelf. The seds are sorted out as they flow, and settle in a regular pattern: the coarses particles settle first, then medium, then fine. Repeated sequences of this graded bedding indicates that an are has had many underwater landslides. • Volcanic ash is produced by violent volcanic eru ...
... continental shelf. The seds are sorted out as they flow, and settle in a regular pattern: the coarses particles settle first, then medium, then fine. Repeated sequences of this graded bedding indicates that an are has had many underwater landslides. • Volcanic ash is produced by violent volcanic eru ...
Unit 7 Study Guide Answer Key
... 1. The three main layers of the Earth are the Crust (thin, rocky outer layer), the Mantle (thick layer of hot, but solid rock), and the Core (a large sphere of metal that occupies the Earth’s center.) 2. The Lithosphere is a layer of relatively cool rigid rock that include the upper most mantle and ...
... 1. The three main layers of the Earth are the Crust (thin, rocky outer layer), the Mantle (thick layer of hot, but solid rock), and the Core (a large sphere of metal that occupies the Earth’s center.) 2. The Lithosphere is a layer of relatively cool rigid rock that include the upper most mantle and ...
No Slide Title - physicalallen
... other plates creating Earth’s surface features ~ mountains, trenches & volcanoes ...
... other plates creating Earth’s surface features ~ mountains, trenches & volcanoes ...
Plate Tectonics
... Defense needs – mapping the seafloor Anti-submarine technology GI Bill – a wave of scientists and engineers Booming postwar economy and support for science ...
... Defense needs – mapping the seafloor Anti-submarine technology GI Bill – a wave of scientists and engineers Booming postwar economy and support for science ...
Atlantic Ocean Floor Topography Lab.
... With the help of reference books or diagrams, label the following topographic features on your graph. Remember: both sides of the ocean basin may have the same topographic features but reversed! Continental Shelf Continental Slope Continental Rise Abyssal Plains Mid-Atlantic Ridge Rift ...
... With the help of reference books or diagrams, label the following topographic features on your graph. Remember: both sides of the ocean basin may have the same topographic features but reversed! Continental Shelf Continental Slope Continental Rise Abyssal Plains Mid-Atlantic Ridge Rift ...
Aquatic Science Final Review (Semester 1)
... 44. What factor is used to determine an areas climate? 45. ____________ left striations, or scars in the bedrock of continents giving evidence of continetal drift. 46. As you move closer to mid-ocean ridge, the seafloor gets __________ in age. 47. The most prominent topographic feature on earth is t ...
... 44. What factor is used to determine an areas climate? 45. ____________ left striations, or scars in the bedrock of continents giving evidence of continetal drift. 46. As you move closer to mid-ocean ridge, the seafloor gets __________ in age. 47. The most prominent topographic feature on earth is t ...
Plate Tectonics Study Guide
... As oceanic crust moves away from the mid-ocean ridge, it cools and becomes more dense. The supercontinent that began to break apart about 225 million years ago is called Pangaea. A rift valley forms along a divergent boundary on land. Fossils of tropical plants found on an island in the Arctic Ocean ...
... As oceanic crust moves away from the mid-ocean ridge, it cools and becomes more dense. The supercontinent that began to break apart about 225 million years ago is called Pangaea. A rift valley forms along a divergent boundary on land. Fossils of tropical plants found on an island in the Arctic Ocean ...
Key concepts
... -know the difference between active and passive continental margins and the structures found at each -be able to identify the features of a continental margin (continental shelf, shelf break, continental slope, continental rise) -know what factors affect continental shelf width -know that turbidity ...
... -know the difference between active and passive continental margins and the structures found at each -be able to identify the features of a continental margin (continental shelf, shelf break, continental slope, continental rise) -know what factors affect continental shelf width -know that turbidity ...
Glossary for Plate tectonics and associated hazards
... Composite cone Steep sided volcano with layers of ash and lava at destructive plate margins. Cone Conical landform Conservative Plates meeting at an oblique angle, with horizontal movement. E.g. California margin Constructive New plate material is being added through fissures when sea floor spreads. ...
... Composite cone Steep sided volcano with layers of ash and lava at destructive plate margins. Cone Conical landform Conservative Plates meeting at an oblique angle, with horizontal movement. E.g. California margin Constructive New plate material is being added through fissures when sea floor spreads. ...
Beyond_the_Beach
... hot basalt, thermal expansion creates elevation moves away from ridge axis in both directions Abyssal basins water depth – 4000-6000 m (only trenches are deeper) abyssal hills, include rough relief from volcanic formation abyssal plains, smooth surface due to burial by sediment Continental margins c ...
... hot basalt, thermal expansion creates elevation moves away from ridge axis in both directions Abyssal basins water depth – 4000-6000 m (only trenches are deeper) abyssal hills, include rough relief from volcanic formation abyssal plains, smooth surface due to burial by sediment Continental margins c ...
Plate Tectonics Inside Earth Chapter 1 Study
... A. Developed by a scientist named Alfred Wegener 1 His hypothesis was that all the continents has once been joined together as a single landmass and have since drifted apart. 2. He named this supercontinent Pangaea. 3. The idea that the continents slowly moved over Earth’s surface became known as co ...
... A. Developed by a scientist named Alfred Wegener 1 His hypothesis was that all the continents has once been joined together as a single landmass and have since drifted apart. 2. He named this supercontinent Pangaea. 3. The idea that the continents slowly moved over Earth’s surface became known as co ...
Key concepts
... -know the difference between oceanic crust & continental crust -know how pressure and temperature change as you move through the layers of the earth and their effects on the behavior of rocks -know the internal source of heat inside the earth and how heat moves by conduction or convection -know how ...
... -know the difference between oceanic crust & continental crust -know how pressure and temperature change as you move through the layers of the earth and their effects on the behavior of rocks -know the internal source of heat inside the earth and how heat moves by conduction or convection -know how ...
Powerpoint
... The process by which the ocean floor sinks beneath a deepocean trench and back into the mantle is called ...
... The process by which the ocean floor sinks beneath a deepocean trench and back into the mantle is called ...
Lecture 13 Summary
... which new oceanic lithosphere (crust + mantle) is generated in response to partial melting of mantle lherzolite undergoing adiabatic decompression in a narrow zone of upwelling. Essentially the oceanic crust can be divided into two major domains: (1) The accreting plate boundary zone (mid-ocean ridg ...
... which new oceanic lithosphere (crust + mantle) is generated in response to partial melting of mantle lherzolite undergoing adiabatic decompression in a narrow zone of upwelling. Essentially the oceanic crust can be divided into two major domains: (1) The accreting plate boundary zone (mid-ocean ridg ...
Testing the plate tectonics model Evidence for the plate tectonics
... What happens at a divergent plate boundary Sea Floor Spreading • Two plates move apart • Mantle material upwells to create new seafloor • Mid-Oceanic ridges (underwater mountain range) develop along welldeveloped divergent boundaries • Mid-Atlantic Ridge • East Pacific Rise ...
... What happens at a divergent plate boundary Sea Floor Spreading • Two plates move apart • Mantle material upwells to create new seafloor • Mid-Oceanic ridges (underwater mountain range) develop along welldeveloped divergent boundaries • Mid-Atlantic Ridge • East Pacific Rise ...
The plates consist of an outer layer of the Earth, the lithosphere
... of the mid-ocean ridges? These questions could not be answered without also knowing the significance of these ridges. In 1961, scientists began to theorize that mid-ocean ridges mark structurally weak zones where the ocean floor was being ripped in two lengthwise along the ridge crest. New magma fro ...
... of the mid-ocean ridges? These questions could not be answered without also knowing the significance of these ridges. In 1961, scientists began to theorize that mid-ocean ridges mark structurally weak zones where the ocean floor was being ripped in two lengthwise along the ridge crest. New magma fro ...
1. There is a link between WHY they occur and - DP
... volcanoes tend to be found at Destructive margins. Volcanoes that produce lava flows are associated with Constructive margins. ...
... volcanoes tend to be found at Destructive margins. Volcanoes that produce lava flows are associated with Constructive margins. ...
Chapter 4
... Magnetic polarity reversals •At irregular time intervals, the “magnet turns around”. •Lava that solidified during these reversals allows us to determine the date of these reversals. •Volcanic rocks dated to 760,000 years ago in several locations, including the ski area up at Mammoth Lakes, Californ ...
... Magnetic polarity reversals •At irregular time intervals, the “magnet turns around”. •Lava that solidified during these reversals allows us to determine the date of these reversals. •Volcanic rocks dated to 760,000 years ago in several locations, including the ski area up at Mammoth Lakes, Californ ...
Plate Tectonics Review Worksheet
... Plate Tectonics Review Worksheet 1. Continental Drift: A theory proposed by Alfred Wegner that said all continents were once joined 300 million years ago in a single land mass called Pangaea. Over time the continents moved to their present day locations. 2. What are four pieces of evidence for cont ...
... Plate Tectonics Review Worksheet 1. Continental Drift: A theory proposed by Alfred Wegner that said all continents were once joined 300 million years ago in a single land mass called Pangaea. Over time the continents moved to their present day locations. 2. What are four pieces of evidence for cont ...
Arnaud_lecture8
... Count Rumford explains the measurements… But a still more striking, and I might, I believe, say, an incontrovertible proof of the existence of currents of cold water at the bottom of the Sea, setting from the poles towards the equator, is the very remarkable difference that has been found to subsis ...
... Count Rumford explains the measurements… But a still more striking, and I might, I believe, say, an incontrovertible proof of the existence of currents of cold water at the bottom of the Sea, setting from the poles towards the equator, is the very remarkable difference that has been found to subsis ...
Test 2
... According to plate tectonic theory, the number of major crustal plates is about: (49) The place where seafloor spreading originates and where new crust is produced is: (50+) The basic driving force for plate tectonics seems to be ____________. (48) The upper lithosphere is also called the: (43) As c ...
... According to plate tectonic theory, the number of major crustal plates is about: (49) The place where seafloor spreading originates and where new crust is produced is: (50+) The basic driving force for plate tectonics seems to be ____________. (48) The upper lithosphere is also called the: (43) As c ...
Abyssal plain
An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth’s surface. They are among the flattest, smoothest and least explored regions on Earth. Abyssal plains are key geologic elements of oceanic basins (the other elements being an elevated mid-ocean ridge and flanking abyssal hills). In addition to these elements, active oceanic basins (those that are associated with a moving plate tectonic boundary) also typically include an oceanic trench and a subduction zone.Abyssal plains were not recognized as distinct physiographic features of the sea floor until the late 1940s and, until very recently, none had been studied on a systematic basis. They are poorly preserved in the sedimentary record, because they tend to be consumed by the subduction process. The creation of the abyssal plain is the end result of spreading of the seafloor (plate tectonics) and melting of the lower oceanic crust. Magma rises from above the asthenosphere (a layer of the upper mantle) and as this basaltic material reaches the surface at mid-ocean ridges it forms new oceanic crust. This is constantly pulled sideways by spreading of the seafloor. Abyssal plains result from the blanketing of an originally uneven surface of oceanic crust by fine-grained sediments, mainly clay and silt. Much of this sediment is deposited by turbidity currents that have been channelled from the continental margins along submarine canyons down into deeper water. The remainder of the sediment is composed chiefly of pelagic sediments. Metallic nodules are common in some areas of the plains, with varying concentrations of metals, including manganese, iron, nickel, cobalt, and copper. These nodules may provide a significant resource for future mining ventures.Owing in part to their vast size, abyssal plains are currently believed to be a major reservoir of biodiversity. The abyss also exerts significant influence upon ocean carbon cycling, dissolution of calcium carbonate, and atmospheric CO2 concentrations over timescales of 100–1000 years. The structure and function of abyssal ecosystems are strongly influenced by the rate of flux of food to the seafloor and the composition of the material that settles. Factors such as climate change, fishing practices, and ocean fertilization are expected to have a substantial effect on patterns of primary production in the euphotic zone. This will undoubtedly impact the flux of organic material to the abyss in a similar manner and thus have a profound effect on the structure, function and diversity of abyssal ecosystems.