Tectonics 2

Oct 01, 2012

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The Evidence Builds. Once seafloor spreading was proven, a unifying theory was devised to explain all of the Earth's crustal motionsCanadian J. Tuzo Wilson and American Jason Morgan (geophysicists) coined Plate Tectonics in 1968. Plate Tectonics. Basic ConstructsLithosphere (upper mantle and crus

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Tectonics 2

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PLATE TECTONICS

PLATE TECTONICS. Nafisa Skeie. What is plate tectonics?. The build up of plates…?. Or is it the build up of food onto a plate…?. Geographically…. Plate: Large, rigid slab of Earth’s solid rock. + Tectonics: From the Greek root “to build”. Plate Tectonics =

1.14k views • 19 slides

PLATE TECTONICS

PLATE TECTONICS. Objectives. Explain how paleomagnetism provided the definitive evidence for continental drift. Define seafloor spreading. Define theory of plate tectonics. Describe the different types of plate margins. Explain the role of mantle convection in plate tectonics.

1.31k views • 28 slides

Chapter 2: Global Tectonics Our Dynamic Planet

Chapter 2: Global Tectonics Our Dynamic Planet . Introduction. Each rocky body, whether planet or moon, started with a hot interior. Each has been kept warm over time by energy released by the decay of radioactive isotopes .

1.31k views • 103 slides

Volcanoes and Plate Tectonics (part 2)

Volcanoes and Plate Tectonics (part 2). “an opening in the Earth’s crust through which an eruption takes place”. Volcanoes Three types. Cinder Cones . Cinder Cone. Inside a Cinder Cone. Cinder Cone. Steep sloped sides (angles close to 40 °)

727 views • 59 slides

Plate Tectonics Chapter 3: 2 nd Half

Plate Tectonics Chapter 3: 2 nd Half. Plate Tectonics . Incorporates the ideas of continental drift and seafloor spreading in a unified model. 7 Major Plates. The Plates are Outlined by the Major Earthquake/Volcanic Belts of the World. Boundary Types. Divergent Boundary.

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Chapter 2: Plate Tectonics

Chapter 2: Plate Tectonics. What is plate tectonics? Plate tectonics is the study of the origin and arrangement of the broad physical features of the Earth. Plate tectonics is the basic idea that the Earth is divided into a few large plates that move slowly and change in size.

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Chapter 2 - Plate Tectonics and Physical Hazards

Chapter 2 - Plate Tectonics and Physical Hazards. The Big Picture. Pieces of Earth’s surface Move around Grind sideways Collide Sink into Earth’s hot interior Collisions create mountain ranges, cause tsunami Less directly, mountain ranges affect weather and climate.

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Plate Tectonics

Plate Tectonics. Continental Drift. Alfred Wegener suggested all earth’s land masses collided 300 million years ago to form one supercontinent He named it PANGAEA. Pangaea. Wegener’s Proofs #1 and #2. 1. He saw a jigsaw fit between South America and Africa.

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Plate Tectonics Day 2

Plate Tectonics Day 2. Just for fun Scrat and Continental Drift-Ice Age 4 Pangaea’s Moving Farther Apart Again Song The Continental Drift Song (Breaking Up Is Hard to Do). Review. Plate tectonic Theory http://www.odsn.de/odsn/services/paleomap/animation.html

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Volcanoes Plate tectonics part 2

Volcanoes Plate tectonics part 2. Mt. Arenal, Costa Rica. Hawaii. Surtsey, Iceland. Basaltic -hottest,most fluid, low[gas],lowSiO 2 ……….CALMEST………. Devil’s Tower, SD. Andesitic- over subduction zones;intermediate. Mt. St. Helens. Tambora Indonesia.

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TECTONICS

TECTONICS. What is the structure of the Earth?. Introduction. Learning objectives. What is the structure of the Earth? What are Plate Tectonics?. Crust (Earths outershell) Solid rock-4-35km thick. Mantle 2,900km thick Very Hot – 2500 o C It is like ‘Blu Tack’. Outer Core

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Plate Tectonics Tectonics

Plate Tectonics Tectonics. The Problem with Continental Drift. While Wegener was able to find evidence of continental drift, there were 2 major problems with his ideas: Wegener could not explain what could cause the continents to drift

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Chapter 2: Plate Tectonics

Chapter 2: Plate Tectonics. Tectonic Plates of Earth. Pangaea. Pangaea: Pan = all Gaea = Earth Panthalassa Thalassa = sea AKA Tethys Sea. Continental Drift. Progressive breakup of Pangaea into modern continents Similar to sea ice. Wegner’s Evidence.

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Plate Tectonics Day 2

Plate Tectonics Day 2. Just for fun Scrat and Continental Drift-Ice Age 4 Pangaea’s Moving Farther Apart Again Song The Continental Drift Song (Breaking Up Is Hard to Do). Review. Plate tectonic Theory Pangaea-one big continent Proof-fossils, geology, and climate

271 views • 15 slides

Plate Tectonics

Plate Tectonics. What Did The Earth Look Like In The Past?. CONTINENTAL DRIFT THEORY.

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Unit 5-2: Plate Tectonics

Unit 5-2: Plate Tectonics. Moving plates cover the Earth. How did the Earth come to have the features it currently has? Why don’t we see craters everywhere from the meteors that struck the earth eons ago? Have features only been worn down by the sands of time?

249 views • 14 slides

Plate Tectonics 2 Making oceans and continents

http://www.ucmp.berkeley.edu/geology/tectonics.html. Plate Tectonics 2 Making oceans and continents. Pangea* seen at about 225 mya. Collision of Laurasia and Gondwana. Sir Francis Bacon 1620. Benjamin Franklin 1782 The crust of the earth must be a shell floating on a fluid

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Unit 2: Plate Tectonics

Unit 2: Plate Tectonics. The Big EQ: How does the movement of Earth’s plates affect our planet’s surface? Resource: Textbook Chapter 3. What does ‘Plate Tectonics’ mean?. Let’s take a look at a preview… http://www.brainpop.com/science/earthsystem/platetectonics/.

499 views • 33 slides

Section 2: The Theory of Plate Tectonics

Section 2: The Theory of Plate Tectonics. Preview Key Ideas How Continents Move Tectonic Plates Types of Plate Boundaries Causes of Plate Motion Plate Tectonics. Key Ideas. Summarize the theory of plate tectonics. Identify and describe the three types of plate boundaries.

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Unit 2: Plate Tectonics Test Review

Unit 2: Plate Tectonics Test Review. What is the name of the SUPERCONTINENT that was once one land mass?. Pangaea. Wegener’s THEORY that best explains the movement of continents over millions of years is called ___. Continental Drift. Untold tragedies of Continental Drift.

658 views • 64 slides

Chapter 2 – Plate Tectonics

Chapter 2 – Plate Tectonics. Part 1. Chapter 2 The Sea Floor. Figure 2.01. 71% of the earth’s surface is water. Two thirds of earth’s crust is in the northern hemisphere. 80% of the southern hemisphere is ocean. Figure 2.02.

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Plate Tectonics – Part 2

Plate Tectonics – Part 2. Types of Convergent Boundaries. PLATE COLLISIONS!!!!. Oceanic – Continental Convergence. 1. Collision!!! 2. Continental Crust is less dense so Oceanic crust sinks ( subducts ) into the asthenosphere. Oceanic – Continental Convergence.

136 views • 12 slides

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