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Continental Drift- The Theory

Continental Drift- The Theory

Continental Drift- The Theory. The Earth’s crust is broken into about 12 rigid plates, which slide over a semi-molten plastic layer of the mantle. Tectonic Plates on Modern Earth. There are three types of plate boundaries:. 1- Convergent 2- Divergent 3- Transform.

By lotus
(337 views)

Plate Tectonics What is it and what makes it work? Steven Earle, Geology Department Malaspina University-College

Plate Tectonics What is it and what makes it work? Steven Earle, Geology Department Malaspina University-College

Plate Tectonics What is it and what makes it work? Steven Earle, Geology Department Malaspina University-College. The Earth’s interior. 1000 C. 4000 C. 7000 C. Pea-soup analogy. mantle convection. Heat transfer from the core to the mantle produces slow convection of the mantle material.

By neville
(155 views)

Plate Tectonics

Plate Tectonics

CHAPTER. Plate Tectonics. 18. Three factors cause the movement of Earth’s tectonic plates: mantle convection, ridge push, and slab pull. Forces at plate boundaries produce landscape features such as mountains, trenches, and island arches. CHAPTER. Plate Tectonics. 18.

By khuyen
(806 views)

The Earth’s interior

The Earth’s interior

Plate Tectonics What is it and what makes it work? Steven Earle, Geology Department Malaspina University-College. The Earth’s interior. 1000 C. 4000 C. 7000 C. Pea-soup analogy. mantle convection. Heat transfer from the core to the mantle produces slow convection of the mantle material.

By grazia
(133 views)

Class lectures available

Class lectures available

Class lectures available. http://geology.uprm.edu/cavosie.html. World Lithospheric Plates. Source: After W. Hamilton, U.S. Geological Survey. North American Plate. Caribbean Plate. Source: http://woodshole.er.usgs.gov/project-pages/caribbean/background.htmli.

By rowdy
(85 views)

Earth ~200 million years ago

Earth ~200 million years ago

Earth ~200 million years ago. The Geologic Time Scale. Based on. *Fossils *Correlation. Later. *Calibrated with radiometric dating. The Continental Drift Hypothesis. Proposed by Alfred Wegener in 1915. Supercontinent Pangaea started to break up about 200 million years ago.

By Rita
(192 views)

Plate Tectonics II

Plate Tectonics II

Plate Tectonics II. Modern discoveries supporting Plate Tectonic Theory. Symmetry of magnetic polarity across mid-ocean ridges Mid-ocean ridges – underwater mountain chains that circle the globe and often mimic the shape of the coastline Distribution of earthquakes and volcanoes

By geona
(251 views)

The Earth: Everyone’s favorite nested sphere

The Earth: Everyone’s favorite nested sphere

The Earth: Everyone’s favorite nested sphere. Earth’s magnetic field is probably generated by the motion of the highly conducting liquid Outer Core. Motion in the Outer Core. From: Arnou. Mantle Convection and Plumes. Convection at ocean ridges cools the mantle

By gazelle
(94 views)

Terrestrial Planetary Geology: Basic Processes & Earth

Terrestrial Planetary Geology: Basic Processes & Earth

Terrestrial Planetary Geology: Basic Processes & Earth. What are terrestrial planets like on the inside?. Planets (inc. Moon) to scale, with typical surface features. Earth’s Interior. Core: Highest density; nickel and iron Mantle: Moderate density; silicon, oxygen, etc.

By hidi
(159 views)

Earth Structure Swag

Earth Structure Swag

Earth Structure Swag. Jack and Cameron. The Crust. t he crust is Earths outermost layer t hinnest layer t hinnest at ocean t hickest at mountains. crust. The Mantle. r ocky layer t emperatures from 3,300°F able to flow s olid. Inner and Outer Core. i nner core is solid

By amena
(89 views)

RESOURCEs & Environment Ch. 3. internal energy of the earth

RESOURCEs & Environment Ch. 3. internal energy of the earth

RESOURCEs & Environment Ch. 3. internal energy of the earth. Volcanic clouds in Iceland (April 14, 2010) http://inthepark.egloos.com/4727911. 3-1. plate tectonics. 3-1-1. Plate Tectonics?

By oralee
(84 views)

1 st QUARTER TEST Prep

1 st QUARTER TEST Prep

1 st QUARTER TEST Prep. SOME STUDY IS HIGHLY RECOMMENDED BY THE MANAGEMENT. Simply put, what is the theory of plate tectonics ?. The earth’s crust is made up of plates that are moved around by convection currents in the mantle. The outer layer of the Earth, the CRUST is what?

By ifama
(92 views)

Theory of Plate Tectonics

Theory of Plate Tectonics

Theory of Plate Tectonics. Plate Tectonics Plate Boundaries Causes of Plate Tectonics. Plate Tectonics. What is Plate Tectonics. The Earth’s crust and upper mantle are broken into sections called plates Plates move around on top of the mantle like rafts. What is a plate?.

By whitley
(280 views)

Open Questions in Geosciences

Open Questions in Geosciences

Open Questions in Geosciences. Mapping Elements & Structure in the Earth. Geophysics tells us where we are at today Geochemistry tells us how we got there…. Collaborators : - Ricardo Arévalo, Mario Luong : UMD - Kevin Wheeler, Dave Walker : Columbia Univ

By dore
(68 views)

Lecture 3. Global models: Towards modeling plate tectonics

Lecture 3. Global models: Towards modeling plate tectonics

Lecture 3. Global models: Towards modeling plate tectonics. Global surface observables Major ingredients of plate tectonics Linking mantle convection and lithospheric deformations. Key questions. How weak are the plate boundaries? How weak is asthenosphere ?

By taylor
(93 views)

PLATETECTONICS Or Are we dancing on an eggshell? Is there a magma ocean below? …and much more…

PLATETECTONICS Or Are we dancing on an eggshell? Is there a magma ocean below? …and much more…

PLATETECTONICS Or Are we dancing on an eggshell? Is there a magma ocean below? …and much more…. PLATETECTONICS. What causes plate movement? Heat transfer by mantle convection!. geotherm. Earth’s mantle: peridotite !!!. olivine. Olivine (cut gems). Olivine: thin section.

By kirti
(66 views)

Causes of Plate Motion

Causes of Plate Motion

Causes of Plate Motion. Objectives. Explain the process of convection. Summarize how convection in the mantle is related to the movements of tectonic plates. Compare and contrast the processes of ridge push and slab pull. Vocabulary. Mantle Convection Current ridge push slab pull.

By astin
(122 views)

Lijun Liu Seismo Lab, Caltech Dec. 18, 2006

Lijun Liu Seismo Lab, Caltech Dec. 18, 2006

Inferring Mantle Structure in the Past. --- Adjoint method in mantle convection. Lijun Liu Seismo Lab, Caltech Dec. 18, 2006. Present. Plate Tectonics. Seismic Tomography. Dynamic Topography. Geoid. ?. Other Data. Much less is known about the earth’s interior in the past. Past.

By manon
(85 views)

Geodynamics 4: Mixing

Geodynamics 4: Mixing

Geodynamics 4: Mixing. Louise Kellogg University of California, Davis. Outline:. Why care about mixing? Physics of mixing Mixing in the mantle. Global scale: mantle contains both well-mixed regions and heterogeneity. Fine-scale variations in the Galapagos. Fine scale heterogeneity.

By gari
(171 views)

CIG Overview

CIG Overview

CIG Overview. NSF Workshop on Tectonic Modeling Breckenridge, Colorado June, 2005. Overview. Quick Overview of the Computational Infrastructure for Geodynamics (CIG) Why did we come up with CIG initiative? Want to move forward with more sophisticated methods faster

By lane
(360 views)

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