
lecture 01s - Kean University
... Third type of plate boundary Plates slide past one another and no new lithosphere is created or destroyed ...
... Third type of plate boundary Plates slide past one another and no new lithosphere is created or destroyed ...
ps 2-7-08 - elyceum-beta
... • Nothing is pushed down much, similar density • Build Mountains • Keep building as long as pushing occurs • No volcanos ...
... • Nothing is pushed down much, similar density • Build Mountains • Keep building as long as pushing occurs • No volcanos ...
On this day in 1815, Women`s Rights Leader Elizabeth Cady
... Ocean-Ocean Plate Collision • When two oceanic plates collide, one runs over the other which causes it to sink into the mantle forming a subduction zone. • The subducting plate is bent downward to form a very deep depression in the ocean floor called a trench. • The worlds deepest parts of the ocea ...
... Ocean-Ocean Plate Collision • When two oceanic plates collide, one runs over the other which causes it to sink into the mantle forming a subduction zone. • The subducting plate is bent downward to form a very deep depression in the ocean floor called a trench. • The worlds deepest parts of the ocea ...
restless continents text
... A chain of submerged mountains runs through the center of the Atlantic Ocean. The chain is part of a worldwide system of mid-ocean ridges. Mid-ocean ridges are underwater mountain chains that run through Earth’s ocean basins. Mid-ocean ridges are places where sea-floor spreading takes place. Sea-flo ...
... A chain of submerged mountains runs through the center of the Atlantic Ocean. The chain is part of a worldwide system of mid-ocean ridges. Mid-ocean ridges are underwater mountain chains that run through Earth’s ocean basins. Mid-ocean ridges are places where sea-floor spreading takes place. Sea-flo ...
Oceanic Crust
... • Plates are made of crust and upper mantle (lithosphere) • There are 2 types of plate • There are 3 types of plate boundaries • Volcanoes and Earthquakes are closely linked to the margins of the tectonic plates ...
... • Plates are made of crust and upper mantle (lithosphere) • There are 2 types of plate • There are 3 types of plate boundaries • Volcanoes and Earthquakes are closely linked to the margins of the tectonic plates ...
Layers of the Earth - Atlanta Public Schools
... •A rigid layer made up of the uppermost part of the mantle and the crust. •There are two kinds of crust: continental and oceanic. Yes, there is even crust under the ...
... •A rigid layer made up of the uppermost part of the mantle and the crust. •There are two kinds of crust: continental and oceanic. Yes, there is even crust under the ...
Earth Science - Lisle CUSD 202
... Intensity of light decreases with depth Water absorbs light, so oceans are dark Light sufficient for photosynthesis only exists in the top 100 m of the ocean ...
... Intensity of light decreases with depth Water absorbs light, so oceans are dark Light sufficient for photosynthesis only exists in the top 100 m of the ocean ...
Layers of the Earth Power Point
... •A rigid layer made up of the uppermost part of the mantle and the crust. •There are two kinds of crust: continental and oceanic. Yes, there is even crust under the ...
... •A rigid layer made up of the uppermost part of the mantle and the crust. •There are two kinds of crust: continental and oceanic. Yes, there is even crust under the ...
SOL 5.6 Interrelationships in Earth/Space Systems (Oceans)
... rise. Deeper than the shelf and has a steep incline. ...
... rise. Deeper than the shelf and has a steep incline. ...
faults_heating
... mountain ranges are common in this region. The Nazca Plate is sinking smoothly and continuously into the trench, the deepest part of the subducting plate breaks into smaller pieces that become locked in place for long periods of time before suddenly moving to generate large earthquakes. Such earthqu ...
... mountain ranges are common in this region. The Nazca Plate is sinking smoothly and continuously into the trench, the deepest part of the subducting plate breaks into smaller pieces that become locked in place for long periods of time before suddenly moving to generate large earthquakes. Such earthqu ...
... ntil about 130 years ago, scholars believed that no life could exist in the deep ocean. The abyss was simply too dark and cold to sustain life. The discovery of many animals living in the abyssal environment by Sir Charles Wyville Thompson during HMS Challenger’s 1872– 1876 circumnavigation stunned ...
Chapter 1: Planet Ocean: A Historical Perspective
... Ice Comets were also important to adding water to the Earth system ...
... Ice Comets were also important to adding water to the Earth system ...
4 Resources from the Ocean Critical Thinking
... bottom of the ocean. It includes the animals living near, on, or in the ocean floor. The pelagic environment is found near the ocean surface and in the open and deep-ocean water. It gets more sunlight than any other zone, so many phytoplankton can grow. These phytoplankton act as food for other mari ...
... bottom of the ocean. It includes the animals living near, on, or in the ocean floor. The pelagic environment is found near the ocean surface and in the open and deep-ocean water. It gets more sunlight than any other zone, so many phytoplankton can grow. These phytoplankton act as food for other mari ...
Plate margin... - Consortium for Ocean Leadership
... at several convergent margins suggests that only 2050% of the subducted sediment fluxes are recycled to the arc, with the remainder possibly continuing into the deep mantle. Because sediments ultimately derive from the continents, this downward flux is a net loss of mass from the continents, and thr ...
... at several convergent margins suggests that only 2050% of the subducted sediment fluxes are recycled to the arc, with the remainder possibly continuing into the deep mantle. Because sediments ultimately derive from the continents, this downward flux is a net loss of mass from the continents, and thr ...
Document
... Seafloor Recycling • Since new material is created at the midocean ridges and Earth is not expanding, somewhere material must be removed from the surface. • It turns out that old ocean floor is “subducted” into the mantle at subduction zones. ...
... Seafloor Recycling • Since new material is created at the midocean ridges and Earth is not expanding, somewhere material must be removed from the surface. • It turns out that old ocean floor is “subducted” into the mantle at subduction zones. ...
Magma Type and Plate Margins
... Explain the relationship between igneous activity, magmatic composition, rock types and plate boundaries. ...
... Explain the relationship between igneous activity, magmatic composition, rock types and plate boundaries. ...
Document
... • Oceanic lithosphere subducts underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises forming volcanism • E.g. The Andes ...
... • Oceanic lithosphere subducts underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises forming volcanism • E.g. The Andes ...
Pangaea and Seafloor Spreading Notes
... of miles apart, that rock types and rock formations were the same on continents thousands of miles apart, that the continents shapes seemed to have edges that could readily fit into each other, and that the climates many continents were now experiencing would not support the fossil types found there ...
... of miles apart, that rock types and rock formations were the same on continents thousands of miles apart, that the continents shapes seemed to have edges that could readily fit into each other, and that the climates many continents were now experiencing would not support the fossil types found there ...
Pangaea and Seafloor Spreading Notes
... continents thousands of miles apart, that rock types and rock formations were the same on continents thousands of miles apart, that the continents shapes seemed to have edges that could readily fit into each other, and that the climates many continents were now experiencing would not support the fos ...
... continents thousands of miles apart, that rock types and rock formations were the same on continents thousands of miles apart, that the continents shapes seemed to have edges that could readily fit into each other, and that the climates many continents were now experiencing would not support the fos ...
Chapter 16
... Marine and Coastal Ecosystems 1. Regions of ocean water differ greatly, and some zones support more life than others. a. The uppermost 10 m (33 ft) of water absorbs 80% of solar energy, so nearly all of the oceans’ primary productivity occurs in the top layer, or photic zone. b. Habitats and ecosyst ...
... Marine and Coastal Ecosystems 1. Regions of ocean water differ greatly, and some zones support more life than others. a. The uppermost 10 m (33 ft) of water absorbs 80% of solar energy, so nearly all of the oceans’ primary productivity occurs in the top layer, or photic zone. b. Habitats and ecosyst ...
plates - pribaudo
... What evidence do we have to support this idea of seafloor spreading? o Midocean ridges are warmer than surrounding ocean floors o Active volcanoes on ridges, earthquakes on ridges o Midocean ridge rocks are younger than surrounding ocean floor rocks o Midocean ridge volcanoes are younger than volc ...
... What evidence do we have to support this idea of seafloor spreading? o Midocean ridges are warmer than surrounding ocean floors o Active volcanoes on ridges, earthquakes on ridges o Midocean ridge rocks are younger than surrounding ocean floor rocks o Midocean ridge volcanoes are younger than volc ...
Seafloor spreading - School of Ocean and Earth Science and
... precipitate suddenly when the superheated water is injected into the surrounding ~2°C seawater, forming sulfide chimneys. White and clear smokers occur at lower temperatures. The chemical reactions provide energy for an unusual kind of life that does not depend on photosynthesis but flourishes as ch ...
... precipitate suddenly when the superheated water is injected into the surrounding ~2°C seawater, forming sulfide chimneys. White and clear smokers occur at lower temperatures. The chemical reactions provide energy for an unusual kind of life that does not depend on photosynthesis but flourishes as ch ...
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.