Download 10.16.2014 Chapter 5 Power Point

1) Turn in HW into the basket in the
front!!!
2) Warm Up:
At what type of plate boundary are island
arcs formed?
At what type of plate boundary are
mountains formed?
At what type of boundary are mid-ocean
ridges formed?
1) Turn in HW into the basket in the
front!!!
2) Warm Up:
At what type of plate boundary are island arcs
formed? Convergent Oceanic plates
At what type of plate boundary are mountains
formed? Convergent continental plates
At what type of boundary are mid-ocean ridges
formed? Divergent oceanic plates
Ch. 5
DEFORMATION OF
EARTH’S CRUST
5.1 How is the Crust Deformed?
2 Processes:
• Isostatic Adjustment
• Stress
Deformation
• Isostatic Adjustment
– Isostasy = Balance
Stress: Force per Unit Area
– Leads to Strain: change in shape or volume of
rocks
– 3 types of stress:
• Compression
• Tension
• Shearing
Forces that deform Rock:
Compression
Tension
Shearing
5.2 Results of Stress
• Folding
• Faulting
• Folding: permanent rock deformation with out
breaking
– 3 types
• Anticline = ridge
• Syncline = valley
• monocline
• Folding: permanent rock deformation with out
breaking
– 3 types
• Anticline = ridge
• Syncline = valley
• monocline
• Faulting: Break in rock
5.3 Mountain Formation
• Mountain Range: a group of adjacent mountains
– Example: Cascade Range
• Mountain System: a group of adjacent mountain
ranges
– Example: The Great Smoky, the blue
ridge, the Cumberland, and the
Green mountain ranges
are all a part of the Appalachian system
• Mountain Belt: Large adjacent mountain
systems form belts
Plate Tectonics and Mountains
Collisions
Continental and
Oceanic Crust
Oceanic
Oceanic
Continental
Continental
Types of Mountains
• Folded Mountains
• Fault-Block
• Grabens
• Plateaus
• Dome Mountains
• Volcanic Mountains
The End
Types of Deformation Inquiry Lab
Modeling Isostasy