Tectonic Plates
... pushed underneath the continental crust • The melt rises forming volcanism • Example: The Andes ...
... pushed underneath the continental crust • The melt rises forming volcanism • Example: The Andes ...
Unit VI: Solid Earth Circulation
... margins, plates are slipping past each other. Each boundary type is represented differently at Earth’s surface. In other words, each type of plate margin is reflected in distinctive surface features: mid-ocean ridges, deep-sea trenches, and transform faults, respectively. ...
... margins, plates are slipping past each other. Each boundary type is represented differently at Earth’s surface. In other words, each type of plate margin is reflected in distinctive surface features: mid-ocean ridges, deep-sea trenches, and transform faults, respectively. ...
Slide 1
... OCEANIC – OCEANIC • The more dense of the 2 will go under and form a subduction zone / OCEAN TRENCH • The new mantle material produced from the melting of the subducted plate will eventually resurface to produce chain of volcanic islands on the ocean floor called ISLAND ARCS • As magma accumulates ...
... OCEANIC – OCEANIC • The more dense of the 2 will go under and form a subduction zone / OCEAN TRENCH • The new mantle material produced from the melting of the subducted plate will eventually resurface to produce chain of volcanic islands on the ocean floor called ISLAND ARCS • As magma accumulates ...
File
... Occurs when pressure difference across the tropical Pacific relaxes and both surface winds and ocean currents either cease or reverse. ...
... Occurs when pressure difference across the tropical Pacific relaxes and both surface winds and ocean currents either cease or reverse. ...
How the Earth Was Made: The Deepest Place on Earth
... 4. What is the pressure at the Challenger Deep compared to the pressure at sea level? What did it do to the dummy head in the video? (8:00) 5. The submersible Trieste was the first to venture to the bottom of the Marianas Trench in 1960 at a recorded depth of 35,800 feet. What hazards were the occup ...
... 4. What is the pressure at the Challenger Deep compared to the pressure at sea level? What did it do to the dummy head in the video? (8:00) 5. The submersible Trieste was the first to venture to the bottom of the Marianas Trench in 1960 at a recorded depth of 35,800 feet. What hazards were the occup ...
Examples posted for the midterm test.
... Buoyant rocks form the mantle. Volcanic mountains. Transform faults. Sea-floor stripes. None of the above. ...
... Buoyant rocks form the mantle. Volcanic mountains. Transform faults. Sea-floor stripes. None of the above. ...
In geologic terms, a plate is a large, rigid slab of solid rock
... calcium than the crust. The mantle is hotter and denser because temperature and pressure inside the Earth increase with depth. The upper part of the mantle is considered to be plastic-like or have plasticity. Plasticity means that the materials in the upper mantle, called the asthenosphere, are soli ...
... calcium than the crust. The mantle is hotter and denser because temperature and pressure inside the Earth increase with depth. The upper part of the mantle is considered to be plastic-like or have plasticity. Plasticity means that the materials in the upper mantle, called the asthenosphere, are soli ...
The spatial extent and characteristics of block fields in Alpine areas
... the peridotite layers in the sandwich runs. For both major and trace elements, the combined liquid compositional trends defined by the hornblendite melting experiments and our sandwich experiments are similar to the trends observed in natural basanite to alkali basalt suites. This suggests that the ...
... the peridotite layers in the sandwich runs. For both major and trace elements, the combined liquid compositional trends defined by the hornblendite melting experiments and our sandwich experiments are similar to the trends observed in natural basanite to alkali basalt suites. This suggests that the ...
2 The NorTh-easT aTlaNTic - The Quality Status Report 2010
... Although the vast waters of the OSPAR area and its diverse ecosystems present many challenges for management and environmental protection, there are many commonalities within each of the Regions, including common oceanic and open sea characteris tics that are strongly influenced by the dynamics of ...
... Although the vast waters of the OSPAR area and its diverse ecosystems present many challenges for management and environmental protection, there are many commonalities within each of the Regions, including common oceanic and open sea characteris tics that are strongly influenced by the dynamics of ...
Lecture 7 Plates and Plumes September 27th
... cannot be explained by plate tectonics. These Hot Spots appear to be stationary (i.e. they do not move like the plates They are thought to be produced by hot mantle plumes welling up from deep within the mantle (perhaps as deep as the core-mantle boundary?). ...
... cannot be explained by plate tectonics. These Hot Spots appear to be stationary (i.e. they do not move like the plates They are thought to be produced by hot mantle plumes welling up from deep within the mantle (perhaps as deep as the core-mantle boundary?). ...
What is a plate boundary?
... shown on the left, is based on composition (what the layers are made of). The other way, shown on the right, is based on physical properties of the layers (solid vs. liquid, rigid vs. soft, etc.). These may also be called zones. In most cases, the boundaries between the physical layers do not line u ...
... shown on the left, is based on composition (what the layers are made of). The other way, shown on the right, is based on physical properties of the layers (solid vs. liquid, rigid vs. soft, etc.). These may also be called zones. In most cases, the boundaries between the physical layers do not line u ...
9 - Mr. Neason`s Earth Science
... Exploring the Ocean Floor During the mid-1800’s, several nations sent ships on scientific expeditions to gather data about the oceans. Scientists wanted to know more about the topography of the ocean floor. Data from the middle of the Atlantic Ocean, revealed large undersea mountains. 1900s the disc ...
... Exploring the Ocean Floor During the mid-1800’s, several nations sent ships on scientific expeditions to gather data about the oceans. Scientists wanted to know more about the topography of the ocean floor. Data from the middle of the Atlantic Ocean, revealed large undersea mountains. 1900s the disc ...
Carib PISI Stern GSA Denver 2016
... Late Jurassic (M16; 141 Ma) reconstruction of the Proto-Caribbean ...
... Late Jurassic (M16; 141 Ma) reconstruction of the Proto-Caribbean ...
Plate Tectonics
... • Found the maximum age of the ocean floor and its sediments were less than 200 million years • Centers of continents are much older – Parts are more than 3.9 billion years old ...
... • Found the maximum age of the ocean floor and its sediments were less than 200 million years • Centers of continents are much older – Parts are more than 3.9 billion years old ...
The Crust - Fort Bend ISD
... The Lithosphere The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere. ...
... The Lithosphere The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere. ...
Exam 1 - cloudfront.net
... 19. Evidence for a united Pangaea comes from the fossil record of which type(s) of organisms? (a) plants (c) large terrestrial animals ...
... 19. Evidence for a united Pangaea comes from the fossil record of which type(s) of organisms? (a) plants (c) large terrestrial animals ...
Continental Drift through Plate Tectonics
... the continents. Later, that force was discovered at the bottom of the oceans. Write a letter to Alfred Wegener telling him that he was right about the moving continents, and that his missing evidence was found! ...
... the continents. Later, that force was discovered at the bottom of the oceans. Write a letter to Alfred Wegener telling him that he was right about the moving continents, and that his missing evidence was found! ...
Plate Boundaries
... Earth is broken into various plates. These plates drift on the asthenosphere at very slow rates. As plates move away from each other the lithosphere thins and tears. At these divergent plate boundaries new oceanic lithosphere is created in the gaps from upwelling magma from the mantle. This upwellin ...
... Earth is broken into various plates. These plates drift on the asthenosphere at very slow rates. As plates move away from each other the lithosphere thins and tears. At these divergent plate boundaries new oceanic lithosphere is created in the gaps from upwelling magma from the mantle. This upwellin ...
Earth Science Final Exam Study Guide Name Class Date ______
... 2. Which of the following plays a major part in determining the form of a volcano? a. magma composition c. nearness of other volcanoes b. elevation above sea level d. local soil type 3. Magma forms when solid rock in the crust and upper mantle a. cools. c. crystallizes. b. vaporizes. d. partially me ...
... 2. Which of the following plays a major part in determining the form of a volcano? a. magma composition c. nearness of other volcanoes b. elevation above sea level d. local soil type 3. Magma forms when solid rock in the crust and upper mantle a. cools. c. crystallizes. b. vaporizes. d. partially me ...
Oceanic crust
... The rocks of the oceanic crust are very young, not older than 200 million years, compared with the rocks of the continental crust 3.6 billion years old. The decompression occurs beneath rifts in the crust, such as those found at the mid-ocean ridges, and it is through these rifts that lava is extrud ...
... The rocks of the oceanic crust are very young, not older than 200 million years, compared with the rocks of the continental crust 3.6 billion years old. The decompression occurs beneath rifts in the crust, such as those found at the mid-ocean ridges, and it is through these rifts that lava is extrud ...
Plate and Pangaea Powerpoint
... • There are three main types of plate movement. Divergent boundaries Convergent boundaries Transform boundaries ...
... • There are three main types of plate movement. Divergent boundaries Convergent boundaries Transform boundaries ...
File
... A metamorphic facies is a set of metamorphic mineral assemblages that were formed under similar pressures and temperatures.[1] The assemblage is typical of what is formed in conditions corresponding to an area on the two dimensional graph of temperature vs. pressure (See diagram at right).[1] Rocks ...
... A metamorphic facies is a set of metamorphic mineral assemblages that were formed under similar pressures and temperatures.[1] The assemblage is typical of what is formed in conditions corresponding to an area on the two dimensional graph of temperature vs. pressure (See diagram at right).[1] Rocks ...
7-2 Summary
... able to determine the depth of the ocean using a device called an echo sounder. • Once ocean depths were determined, scientists used these data to create a topographic map of the sea floor that revealed vast mountain ranges, called mid-ocean ridges, that stretch for many miles deep below the ocean’s ...
... able to determine the depth of the ocean using a device called an echo sounder. • Once ocean depths were determined, scientists used these data to create a topographic map of the sea floor that revealed vast mountain ranges, called mid-ocean ridges, that stretch for many miles deep below the ocean’s ...
Oceanography
... Earth Science SOL Review Sheet #12: Oceanography Essential Knowledge and Skills Most waves on the ocean surface are generated by wind. The tides are the daily, periodic rise and fall of water level caused by the gravitational pull of the sun and moon. There are large current systems in the oce ...
... Earth Science SOL Review Sheet #12: Oceanography Essential Knowledge and Skills Most waves on the ocean surface are generated by wind. The tides are the daily, periodic rise and fall of water level caused by the gravitational pull of the sun and moon. There are large current systems in the oce ...
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.