Deformation of the Earth’s Crust ©2015 http://www.uwyo.edu/geolgeophys/research/ structural-geology-tectonics.html Deformation of the Earth’s Crust

Isostasy Isostasy-The balance between the pull of gravity on the lithosphere and the push of the asthenosphere. If the mass of the crust increases, it sinks. New mountains, glaciers, sediment deposition

Isostasy If the mass of the crust decreases, it rises. Erosion of mountains, melting of glaciers.

Stress ©2015 http://thenaturalhistorian.com/2014/07/12/nh-notes-bent-rock-on-display-the-sideling-hill-road-cut/ Stress-The squeezing, stretching and twisting of the Earth’s crust. Types of stress: Compression-Pushing together   Tension-Pulling apart   Shearing- sliding in opposite directions  

Folds Folds-bend in rock layers. Happen below the crust where it is experiencing stress. ©2015 http://bio-geo-terms.blogspot.com/2007/12/anticline.html

Types of Folds Anticline Syncline folds upwards. (look like an A) Oldest rock is in the center of the fold. folds downwards (looks like a U) The youngest layer is in the center of the fold. ©2015 http://beccahessmountains.wikispaces.com ©2015 http://www.zmescience.com/science/geology/geological-folds/

Label the picture ©2015 http://csmsgeologypost.blogspot.com/2015/08/folds-anticlines-synclines-monoclines.html

Fault-a break in rock in which there is movement. Hanging wall-The rock above the fault. Foot wall-The rock below the fault. Label the picture ©2015 http://mitep.mtu.edu/earth_cache/hancock_fault.php

Types of Faults Normal Fault-hanging wall moves down, footwall moves up. Caused by tension stress What type of plate boundary would this most likely occur at? ©2014 http://www.hp1039.jishin.go.jp/eqchreng/figures/af ©2010 Kit Morse

Back of the page. Reverse Fault-hanging wall moves up, footwall move down. Caused by compression stress What type of plate boundary would this most likely occur at? ©2014 http://www.hp1039.jishin.go.jp/eqchreng/figures/af

Caused by shearing stress. Strike Slip Fault-rock on either side of the fault slides horizontally past each other in opposite directions. Caused by shearing stress. What type of plate boundary would this most likely occur at? ©2014 http://www.hp1039.jishin.go.jp/eqchreng/figures/af ©2016 USGS

Label the 3 pictures with the type of fault they are.

How Mountains Form Mountain Range-A group of mountains that are close together and formed together. Ex. Rocky Mountains ©2016 http://www.tourist-destinations.net/2015/03/the-rocky-mountains-canada.html

Mountain System-A group of mountain ranges that are close to each other. Ex: The Appalachian Mountain system. ©2016 http://theresilientearth.com/?q=content/appalachian-mountains-rock-ice-age

©2015 http://appscgroup. blogspot ©2015 http://appscgroup.blogspot.com/2014/07/mountain-types-examples-world-geography-for-ssc-exams-general-awareness-download.html