Lecture10 File
... ridges are plate boundaries, as are the deep ocean trenches around the Pacific. The areas between the zones of earthquakes are rigid, lacking deformation related to earthquakes. These are the Earth’s tectonic plates. For example, the African plate is composed of African continental crust plus ocean ...
... ridges are plate boundaries, as are the deep ocean trenches around the Pacific. The areas between the zones of earthquakes are rigid, lacking deformation related to earthquakes. These are the Earth’s tectonic plates. For example, the African plate is composed of African continental crust plus ocean ...
Unit 4 Notes
... -Many rocks on the ocean floor contain iron -As these rocks cool, they change from a liquid to a solid -As a liquid, magnetic particles can float freely and like tiny compasses, they line up with earth’s magnetic field and point north. -When the rock cools, the mineral grains lock in to place, reco ...
... -Many rocks on the ocean floor contain iron -As these rocks cool, they change from a liquid to a solid -As a liquid, magnetic particles can float freely and like tiny compasses, they line up with earth’s magnetic field and point north. -When the rock cools, the mineral grains lock in to place, reco ...
Oceans
... • Turbidity currents: originate along the continental slope and continue across the continental rise • Downslope movements of dense, sedimentladen water • Created when sand and mud are dislodged and thrown into suspension • Because mud-chocked water is denser than normal seawater , it flows downslop ...
... • Turbidity currents: originate along the continental slope and continue across the continental rise • Downslope movements of dense, sedimentladen water • Created when sand and mud are dislodged and thrown into suspension • Because mud-chocked water is denser than normal seawater , it flows downslop ...
U4-T2.5-Plate Boundaries
... Tensional forces cause the plates to move apart. New oceanic crust is being formed, and these boundaries are referred to as constructive margins. Examples include; Mid-Atlantic ridge and Mid-Indian ridge. Copyright © 2014 All rights reserved, Government of Newfoundland and Labrador ...
... Tensional forces cause the plates to move apart. New oceanic crust is being formed, and these boundaries are referred to as constructive margins. Examples include; Mid-Atlantic ridge and Mid-Indian ridge. Copyright © 2014 All rights reserved, Government of Newfoundland and Labrador ...
Plate Tectonics Student Booklet part 1
... Since new oceanic crust is continually being formed at constructive plate boundaries, old oceanic crust must be destroyed elsewhere, because the Earth is not getting any larger. Destructive plate boundaries are also known as subduction zones, which are regions where one plate is dipping, or subducti ...
... Since new oceanic crust is continually being formed at constructive plate boundaries, old oceanic crust must be destroyed elsewhere, because the Earth is not getting any larger. Destructive plate boundaries are also known as subduction zones, which are regions where one plate is dipping, or subducti ...
Mesozoic Plate Tectonics
... At the end of the Paleozoic there was one continent and one ocean. When Pangaea began to break apart about 180 million years ago, the Panthalassa Ocean separated into the individual but interconnected oceans that we see today on Earth. The Atlantic Ocean basin formed as Pangaea split apart. The seaf ...
... At the end of the Paleozoic there was one continent and one ocean. When Pangaea began to break apart about 180 million years ago, the Panthalassa Ocean separated into the individual but interconnected oceans that we see today on Earth. The Atlantic Ocean basin formed as Pangaea split apart. The seaf ...
Introduction to Plate Tectonics
... In this lab you will learn the basics of plate tectonics, including locations of the plate boundaries, distribution of earthquakes, and bathymetry and topography. This exercise uses Google Earth, Google Earth overlays created by various members of the scientific community, and information from the U ...
... In this lab you will learn the basics of plate tectonics, including locations of the plate boundaries, distribution of earthquakes, and bathymetry and topography. This exercise uses Google Earth, Google Earth overlays created by various members of the scientific community, and information from the U ...
Investigations Into The Sources of K and Th Decoupling Across
... between two different types of crusts. Class 6, is island-arc volcanism during oceanic-oceanic subduction, such as in the Marianas Island volcanics [11]. Class 7 is represented by continental-arc volcanism during oceanic-continental subduction such as in the Northern Andean mountain range of South A ...
... between two different types of crusts. Class 6, is island-arc volcanism during oceanic-oceanic subduction, such as in the Marianas Island volcanics [11]. Class 7 is represented by continental-arc volcanism during oceanic-continental subduction such as in the Northern Andean mountain range of South A ...
World Tectonic Maps package as a pdf file
... This is a set of 6 world maps that I compiled to help my students explore the distributions of earthquakes and volcanoes and their relationships to world plate boundaries. They show that lines of ...
... This is a set of 6 world maps that I compiled to help my students explore the distributions of earthquakes and volcanoes and their relationships to world plate boundaries. They show that lines of ...
Landforms of the Ocean
... What Can You Find Down There? • The ocean floor contains all of the geographic features that can be found on the continents: Mountains, volcanoes, plains, valleys, and canyons. • These underwater landforms are many times taller, deeper, longer, and wider than those on dry land. ...
... What Can You Find Down There? • The ocean floor contains all of the geographic features that can be found on the continents: Mountains, volcanoes, plains, valleys, and canyons. • These underwater landforms are many times taller, deeper, longer, and wider than those on dry land. ...
“I can” statements for Plate Tectonics unit 1. I can identify the layers
... 1. I can identify the layers of the Earth by their chemical composition. 2. I can identify the layers of the Earth by their physical properties. 3. I can describe a tectonic plate. 4. I can explain how scientists know what the inside of the Earth is like. 5. I can describe the continental drift hypo ...
... 1. I can identify the layers of the Earth by their chemical composition. 2. I can identify the layers of the Earth by their physical properties. 3. I can describe a tectonic plate. 4. I can explain how scientists know what the inside of the Earth is like. 5. I can describe the continental drift hypo ...
Alfred Wegener`s Theory of Continental Drift B M d Pl t T t i Became
... Tectonics is the basic organizing principle of the Earth Sciences because it explains so much: • Why the continents slowly move across the earth. Why the continents slowly move across the earth • Why the Continents and Oceans are fundamentally different. The rocks that comprise the ocean floor ar ...
... Tectonics is the basic organizing principle of the Earth Sciences because it explains so much: • Why the continents slowly move across the earth. Why the continents slowly move across the earth • Why the Continents and Oceans are fundamentally different. The rocks that comprise the ocean floor ar ...
Lecture Slides
... 2. Initial Pb must be known/modeled or you must chose minerals that have essentially no initial Pb (zircon, apatite, monazite). 3. 235U/238U known today (1/137.88) and invariant across most of planet. 4. Still a problem, the equation: ...
... 2. Initial Pb must be known/modeled or you must chose minerals that have essentially no initial Pb (zircon, apatite, monazite). 3. 235U/238U known today (1/137.88) and invariant across most of planet. 4. Still a problem, the equation: ...
Layers PangaeaCont drift Convection
... • This is where HOT Magma(Hot material) from deep within the Earth rises while cooler magma near the surface sinks. ...
... • This is where HOT Magma(Hot material) from deep within the Earth rises while cooler magma near the surface sinks. ...
Presentation #16 - the Middle East Seismological Forum
... Makran Accretionary Complex. Generally other Accretionary complexes have more closely spaced thrusts compared to the more open, simple structures in Makran. This is ascribed to the thick sedimentary cover (6-7 km) over the oceanic crust in the Gulf of ...
... Makran Accretionary Complex. Generally other Accretionary complexes have more closely spaced thrusts compared to the more open, simple structures in Makran. This is ascribed to the thick sedimentary cover (6-7 km) over the oceanic crust in the Gulf of ...
The reflection seismic survey of project TIPTEQ—the inventory of the
... & Shreve (1988) is a zone with varying thickness above the oceanic crust in which material being transported downwards, exhibits a velocity gradient with respect to both plates. The material flowing within the subduction channel is derived from trench deposits, off scrapings from the base of the upp ...
... & Shreve (1988) is a zone with varying thickness above the oceanic crust in which material being transported downwards, exhibits a velocity gradient with respect to both plates. The material flowing within the subduction channel is derived from trench deposits, off scrapings from the base of the upp ...
LITHOSPHERIC BUOYANCY - Lunar and Planetary Institute
... RESURFACING ON VENUS. E.M. Parmentier, J.W. Head, and P.C. Hess, Department of Geological Sciences, Brown University, Providence, RI 029 12 Impact craters on Venus are consistent with a surface age of 300-500 Myr and their distribution on the surface is indistinguishable from a random one. Despite t ...
... RESURFACING ON VENUS. E.M. Parmentier, J.W. Head, and P.C. Hess, Department of Geological Sciences, Brown University, Providence, RI 029 12 Impact craters on Venus are consistent with a surface age of 300-500 Myr and their distribution on the surface is indistinguishable from a random one. Despite t ...
UNIT 10 Plate Tectonics Study Guide
... - The rotation rate of Earth’s interior solid iron core spins faster than Earth’s liquid iron core. - The solid iron core has been found to spin at a rate [2/3 second] faster than the rest of the planet while the liquid iron core spins opposite of Earth’s rotation. This spin difference generates a m ...
... - The rotation rate of Earth’s interior solid iron core spins faster than Earth’s liquid iron core. - The solid iron core has been found to spin at a rate [2/3 second] faster than the rest of the planet while the liquid iron core spins opposite of Earth’s rotation. This spin difference generates a m ...
inner core
... As the name already suggests, this crust is below the oceans. Compared to continental crust, Oceanic crust is thin (6-11 km). It is more dense than continental crust and therefore when the two types of crust meet, oceanic crust will sink underneath continental crust. The rocks of the oceanic crust a ...
... As the name already suggests, this crust is below the oceans. Compared to continental crust, Oceanic crust is thin (6-11 km). It is more dense than continental crust and therefore when the two types of crust meet, oceanic crust will sink underneath continental crust. The rocks of the oceanic crust a ...
Guided Notes on the Causes of Plate Motions
... sink because of gravity. This matter is then warmed and rises, which causes other matter to cool and sink. The cycle continues…. ...
... sink because of gravity. This matter is then warmed and rises, which causes other matter to cool and sink. The cycle continues…. ...
Oceans: The Last Frontier
... • Oceanic ridges are characterized by: – An elevated position – Extensive faulting – Numerous volcanic structures that have developed on newly formed crust • Consist of layer upon layer of faulted and uplifted basaltic rocks • Mid-Atlantic ridge has been studied more thoroughly than any other ridge ...
... • Oceanic ridges are characterized by: – An elevated position – Extensive faulting – Numerous volcanic structures that have developed on newly formed crust • Consist of layer upon layer of faulted and uplifted basaltic rocks • Mid-Atlantic ridge has been studied more thoroughly than any other ridge ...
Bedrock - NH Division of Forests and Lands
... the slab of oceanic lithosphere (the Nazca Plate in this example) subducting under the continental lithosphere (the South American Plate in this example) that it is colliding with partially melts, thus supplying the magmas that erupt at the surface as lavas that ultimately build the overlying range ...
... the slab of oceanic lithosphere (the Nazca Plate in this example) subducting under the continental lithosphere (the South American Plate in this example) that it is colliding with partially melts, thus supplying the magmas that erupt at the surface as lavas that ultimately build the overlying range ...
How much do we make
... The earth has two kinds of crust: continental crust and oceanic crust. Continents are made of continental curst, which is made up of rocks that are less dense than those of oceanic crust. Plate boundaries occur where the edges of plates meet. You have learned about the three types of boundaries – co ...
... The earth has two kinds of crust: continental crust and oceanic crust. Continents are made of continental curst, which is made up of rocks that are less dense than those of oceanic crust. Plate boundaries occur where the edges of plates meet. You have learned about the three types of boundaries – co ...
IM_chapter9 Seafloor
... Submarine canyons, mostly on continental slopes, carry huge quantities of sediment by turbidity currents into deeper water, where it is deposited as overlapping submarine fans that make up a large part of the continental rise. ...
... Submarine canyons, mostly on continental slopes, carry huge quantities of sediment by turbidity currents into deeper water, where it is deposited as overlapping submarine fans that make up a large part of the continental rise. ...
Plate Tectonics
... isostatic equilibrium: the concept that the oceanic crust and the continental crust float buoyantly in the denser mantle beneath. • Earth’s internal layers are studied by observing how earthquake waves change as they pass through the earth. • In plate tectonic theory the Earth’s outer rigid surface ...
... isostatic equilibrium: the concept that the oceanic crust and the continental crust float buoyantly in the denser mantle beneath. • Earth’s internal layers are studied by observing how earthquake waves change as they pass through the earth. • In plate tectonic theory the Earth’s outer rigid surface ...
Oceanic trench
The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They are also the deepest parts of the ocean floor. Oceanic trenches are a distinctive morphological feature of convergent plate boundaries, along which lithospheric plates move towards each other at rates that vary from a few mm to over ten cm per year. A trench marks the position at which the flexed, subducting slab begins to descend beneath another lithospheric slab. Trenches are generally parallel to a volcanic island arc, and about 200 km (120 mi) from a volcanic arc. Oceanic trenches typically extend 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor. The greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level. Oceanic lithosphere moves into trenches at a global rate of about 3 km2/yr.