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Mountain Building. Chapter 11 September 29, 2010. Complete the following using Ch . 11 of your textbook (page 308 ) on your warm up doc: Define deformation Define stress Define strain List the three types of deformation List the three types of stress

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Mountain building

Mountain Building

Chapter 11

September 29, 2010


Mountain building

  • Complete the following using Ch. 11 of your textbook (page 308) on your warm up doc:

    • Define deformation

    • Define stress

    • Define strain

    • List the three types of deformation

    • List the three types of stress

    • Which type of fault (p. 312) could result in having older rock layers on top of younger rock layers?


Exploratory lab

Exploratory Lab

  • In groups, you are going to complete the Inquiry Activity on page 307

    • Be careful with the sticks- if you do not behave maturely, you will not be allowed to do labs

  • Record your observations for Steps 1-4 and answer the Think About Itquestions


Objectives 9 29 10

Objectives 9/29/10

  • I will be able to… DESCRIBE THE FACTORS AFFECTING ______________________

  • I will be able to… DIFFERENTIATE BETWEEN THE ________________CAUSING ROCK DEFORMATION


Key points

Key Points

  • __________occurs when there is a change in the size and/or shape of a rock body

  • Deformation is caused by movements of tectonic plates and interactions at plate boundaries

    • Types of deformation: ductile, elastic and brittle

  • _______is the force per unit area that is acting on a solid

    • Types of stress: compressional, tensional, shear

  • Strain is the change in shape of a rock as a result of stress


Rock deformation

Rock Deformation

  • Rocks are strong- but no matter how strong, there is a point when rocks will ____________

  • Deformation refers to __________________ _____________________________________

  • Most deformation occurs along _____margins


Rock deformation1

Rock Deformation

  • Deformation is the result of ________

  • Stress is the ________ per unit area that is acting on a solid

  • When a rock is put under more stress than it can handle it will deform- usually by _______ _____________________


Rock deformation2

Rock Deformation

  • The ____________ that is caused by stress on rocks is called _____________

  • Factors influencing the strength of a rock and how it will deform:

    • ____________

    • ___________types

    • Confining ____________

    • ___________


Types of deformation

Types of Deformation

  • ______deformation: rocks _______to their original size and shape when the force is removed

    • Stress is applied ____________

  • _______deformation: rocks _______and fracture

    • Temperatures and confining pressures are ______

  • _____________deformation: rocks change their shape and size _________________

    • Temperatures and confining pressures are _______


Factors affecting deformation

Factors Affecting Deformation

  • Temperature and Pressure

    • __________temperatures and pressure increase the likelihood the rock will show __________deformation

  • Rock Type

    • Rocks with _______bonds usually show brittle deformation

    • Sedimentary and foliated metamorphic rocks are more likely to show ductile deformation

  • Time

    • Forces that might not deform a rock at first can cause a rock to show _______deformation if applied over a long period of time


Types of stress

Types of Stress

  • _________ - pull apart

  • __________ - squeeze together

  • _______ - top and bottom are pushed

    in different directions


Types of stress1

Types of Stress

  • Can you think of some examples of each type of stress?

    • Tensional

    • Compressional

    • Shear


Examples of stress

Examples of Stress

  • Brainstorm examples of the different types of stress from life: (at least 3 types for each)

Tensional

Compressional

Shear


Examples of stress1

Examples of Stress

  • Choose one example from the list for each type of stress.

  • Write 2 sentences explaining the affect the stress has in each example.


Predicting stress

Predicting Stress

  • PREDICT what sort of affect each of those types of stress might have on a mountain being formed.

  • Write 2 sentences explaining the affect each type of stress might have on a new mountain.


Check in

Check-in

  • Define deformation:

  • What are the 3 types of rock deformation?

  • What type of deformation involves rocks returning to their original shape and size after stress is removed?

  • What type of deformation involves rocks permanently changing shape without fracturing?

  • What are the three types of stress?


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