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http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify plate boundaries?

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Page 1: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

http://plateboundary.rice.edu/

Where are the Earth’s tectonic plates and their boundaries?

What happens at plate boundaries?

How do Earth scientists classify plate boundaries?

http://plateboundary.rice.edu/
Page 2: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

Part 1. Identify the patterns of your area of expertise –

volcanology, seismology, geography, geochronology - AT PLATE BOUNDARIES

Describe what you observe – do not interpret what you see, just describe the patterns

Use descriptive terms: Wide or narrow, straight or curved, symmetric or not symmetric, deep or shallow, ridge or valley, active or inactive

Identify 3-5 boundary types; color each on your transparency; define in words

Page 3: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

Part 2. Bring together areas of expertise –

volcanology, seismology, geography, geochronology

Correlate your data sets; what collective patterns emerge?

Identify 3-5 boundary types; color each on a master transparency; define in words

Page 4: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

Part 3.

Describe the different types of boundaries

What patterns were related in the different data sets?

Page 5: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

Plate Boundaries

Where Stuff Happens

Page 6: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

Plate Tectonics Theory• The upper mechanical layer of Earth (lithosphere) is

divided into rigid plates that move away, toward, and along each other

• Most (!) geologic action occurs at plate boundaries in DISTINCT patterns

Page 7: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

CompositionalCrust - 2MantleCore

Physical / MechanicalLithosphere

AsthenosphereMesosphere

Page 8: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

3 Basic Boundary Interactions

5 Basic Boundary Types

Page 9: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 10: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 11: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 12: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 13: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

1. Divergent Boundaries

Mid-AtlanticRidge

North AmericanPlate

EurasianPlate

• Volcanic activity in fissures, some volcanos• Shallow earthquakes, on plate boundary• Young crust, symmetrical around boundary• Ridge• Rocks?

Page 14: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 15: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

South American Plate

Nazca Plate

Antarctic Plate

Page 16: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 17: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

Andes Mountains

Page 18: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 19: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

2. Convergent Boundaries(a) Ocean-continent convergence

Nazca

Plate

AndesMountains

South American Plate

Peru-Chile Trench

• Volcanos tight, parallel boundary, landward• Shallow to deep earthquakes• Age varies on one side of the boundary; not symmetrical• Trench, mountain chain• Rocks?

Page 20: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 21: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 22: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 23: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 24: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

2. Convergent Boundaries(b) Ocean-ocean convergence

• Volcanos tightly spaced, parallel boundary, arc• Shallow to deep earthquakes• Age varies on one side of the boundary; not symmetrical• Trench, volcanic island chain• Rocks?

Page 25: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 26: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

Eurasian Plate

Indian Plate

Page 27: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

Himalaya Mountains

Page 28: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

Tibetan Plateau

Himalayan Mtns.

Mt. Everest

Page 29: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

2. Convergent Boundaries(c) Continent-continent convergence

TibetanPlateau

Indian-Australian Plate

EurasianPlate

HimalayanMountains

• Volcanos rare, dispersed• Shallow (to medium) dispersed earthquakes• No age data• High mountain chain• Rocks?

Page 30: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 31: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 32: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify
Page 33: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

3. Transform-Fault Boundaries

• Volcanos dispersed, most on one side• Earthquakes complex, shallow (to medium) on both sides• Age data not symmetrical, one side of boundary• Complex topography, wide mountains and basins• Rocks?

Page 34: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

Plate Tectonics• The upper mechanical layer of Earth (lithosphere) is

divided into rigid plates that move away, toward, and along each other

• Most (!) geologic action occurs at plate boundaries in DISTINCT patterns

Page 35: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

What’s Driving Plate Tectonics

on Earth?

Page 36: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

It’s all about convection and heat (loss)!Vigorous convection drives plate tectonics

Page 37: Http://plateboundary.rice.edu/ Where are the Earth’s tectonic plates and their boundaries? What happens at plate boundaries? How do Earth scientists classify

What skills did you use in undertaking this activity?

Historical use …

How might you use it in your classroom?

What might you modify?


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