Deformation of the Earth’s Crust

Slides:

Advertisements

Similar presentations

Deforming the Earth’s Crust

Advertisements

Forces in Earth’s Crust

MOVEMENT OF THE EARTH’S CRUST

Science *Stack Test Corrections for collection

Forces in Earth’s Crust

Deforming Earth’s Crust

Earth’s Crust in Motion

Deforming the Earth’s Crust

Section 1: Forces in Earth’s Crust

Lesson 1 – Forces in Earth’s Crust

Earth’s Crust In Motion

Deforming the Earth’s crust

Do Now for Wednesday, February 20 th ! Use your knowledge of the Law of Superposition to arrange the layers of Earth from oldest to youngest.

Crust Deformation: Forces, Faults and Folds. Deformation The bending, tilting, and breaking of the earth’s crust major cause of deformation = plate tectonics.

Deforming the Earth’s Crust

Name: __________________ Period: _______ Date: ___________.

3 Types of Stress 1. Tension: stress that pulls rock apart Rock gets thinner in the middle 2. Compression: stress that pushes rock together 3. Shearing:

NOTES FAULTS and FOLDS.

STRESS, FAULTS, AND FOLDS. Deformation is the bending, tilting, and breaking of the Earth’s crust. Plate tectonics is the major cause of crustal deformation.

Chapter 6 Earthquakes.

Earthquakes The shaking of the Earth’s crust caused by a release of energy. The major cause is the build up of stress between two lithospheric plates.

Ch6 Sec1 Forces in Earth’s Crust. Key Concepts How does stress in the crust change Earth’s surface? Where are faults usually found, and why do they form?

Chapter 11 Deformation of the Crust

Mountain Building Lesson 4.7 How are mountains formed? Lesson 4.7.

Mountain Building Folding and Faulting. Stress in the Crust Stress from plate motions causes crustal rocks to deform –Rocks near the surface are cool.

FOLDS, FAULTS, AND MOUNTAIN TYPES.  1. Volcanic  2. Folded  3. Faulted Mountains formation – Three types.

Fault Types ~Notes~.

Deforming the Earth’s Crust

Forces in Earth’s Crust

Unit 4 Lesson 3 Mountain Building

Deforming the Earth’s Crust Faults and Folds

Deforming the Earth’s Crust Faults and Folds

Deforming Earth’s Crust

Section 1: How Rock Deforms

6.3 Deforming Earth’s Crust

Unit 4 Lesson 3 Mountain Building

Sci. 4-4 Deforming the Earth’s Crust Page

Deforming the Earth’s Crust Faults and Folds

Forces in Earth’s Crust

Chapter 7 Plate Tectonics:

4.1 Forces in Earth’s Crust

Unit 4 Lesson 3 Mountain Building

Forces in Earth’s Crust

Forces in Earth’s Crust

Earth’s Materials and Processes-Part 10 Mountain Building and Faults

Ch.4, Sec.4 - Deforming the Earth’s Crust

Stress and Faults.

Athletic field in Taiwan

Forces in EARTH’s Crust

Deforming Earth’s Crust

Chapter 5, Lesson 1, Interactions at Plate Boundaries

Chapter 11: Deformation of the Crust

Chapter 7 Plate Tectonics.

Chapter 6 Section 1: Forces in Earth’s crust

Earth’s Crust in Motion

What exactly is an earthquake?

Forces in the Earth’s Crust

Chapter 7 Plate Tectonics.

Earth Science Turn in “Locating an Earthquake” activity from Friday!

Deformation of the Earth’s Crust

Kinds of Faults.

Forces in the Earth’s Crust

Chapter 7 Plate Tectonics 14 min. Plate Tectonics.

Forces in EARTH’s Crust

The Results of Stress.

Earth's Crust in Motion.

Stress in the Earth.

Deforming the Earth’s Crust Faults and Folds

Presentation transcript:

Deformation of the Earth’s Crust

The shape of the earth’s crust is always changing. Deformation is the bending, tilting, and breaking of the earth’s crust. Deformation occurs because of STRESS. Plate movement causes stress. Stress is caused by the pressure that builds up in the crust because of plate movement. The crust is exposed to three main types of stress.

1. Compression Rocks are squeezed together. Rocks are pushed higher into the air (C-C), deeper into the crust (O-O) or a combination of both (C-O). Occurs at convergent boundaries.

2. Tension Rocks are pulled apart. As a result, rocks become thinner. Occurs at divergent boundaries.

3. Shearing Rocks are pushed in opposite horizontal directions This causes rocks to twist, bend or break apart. Occurs at transform boundaries.

When enough stress is applied, the shape of a rock can change permanently.

Rocks can respond to stress in 3 ways: They either: Fold Fracture Fault

Folding The permanent bending of a rock exposed to extreme stress. The rock is permanently deformed, but it does not break. Caused by compression stress at convergent boundaries. 2 types of folds: Anticline Syncline

Anticline: a fold in the rock that bends upward.

Syncline: a fold in the rock that bends downward.

Sliding Hill in Western maryland

Fracture: the rock breaks, but the rock on either side of the break does not move.

Fault: rock breaks and the rock on either side of the break does move!

3 Types of Faults 1. Normal Fault: when one side of the fault plane drops down. Rock above the normal fault line is called the hanging wall and the rock below the normal fault line is called the foot wall. Occurs along divergent boundaries because of tension stress.

2. Reverse/thrust fault: when one side of the fault plane moves up (hanging wall up; footwall down). Opposite of a normal fault. Occurs along convergent boundaries because of compression stress.

3. Strike-Slip Fault: rock on either side of the fault plane slide horizontally. Occurs along transform fault because of shearing stress. Ex. San Andreas fault.