Lesson 5: Rock Behavior Under Stress (Identification) Flashcards
It is the force applied to an object
Stress
In Earth Science it is the force unit area that is placed on the rock. What is this?
Stress
This means that the rock change its shape or size.
Deform
What are the 2 types of stress
- Confining Stress
- Defferential Stress
What are 3 types of differential stress?
- Tensional Stress
- Compressional Stress
- Shear Stress
What stress is caused for rocks to lengthen and break apart?
Tensional Stress
What type of stress can be found in divergent plate boundaries?
Tensional Stress
What type of stress that cause rocks to fold or fracture. This squeezes the rock together?
Compressional Stress
Where compressional stress usually happen?
Convergent plate boundaries
What type of stress where rocks past each other in opposite direction, this cause slippage and translation?
Shear Stress
This type of stress usually happens in transform plate boundaries.
Shear Stress
There are 3 stages of rock deformation and what are those?
- Elastic Deformation
- Ductile Deformation
- Fracture
What stage of deformation is when the rock return to its original shape when the stress is removed?
Elastic Deformation
What stage of rock deformation is it when the rock didn’t go back to its original shape when the stress is removed?
Ductile Deformation
It is the stage when the rock breaks.
Fracture
When the stress and strain goes up the the elastic region will show until the plastic region and then the rock will fracture.
It is the stage when the rock breaks.
Fracture
When the stress and strain goes up the the elastic region will show until the plastic region and then the rock will fracture.
What are the factors affecting the rock deformation?
- Rock type
- Temperature
- Pressure condition
- Time
- Type of stress
This refers when the rock experienced compressive stress and deformed plastically.
Folds
This cause the bending or rocks.
Folds
What are three types of folds?
- Monoclines
- Anticlines
- Synclines
This refer to the type of folds where there is a bending of rock layer wherein the oldest rock are at the bottom and the youngest are at the top?
Monoclines
What type of folds that arches upward where the oldest rocks are found at the center while the youngest rocks are draped over them at the top of the structure.
Anticlines
What structure us refer to when the upward folding of rocks form a circular structure?
Dome
What type of folds that bends downward which rocks are curved down to the center?
Synclines
What type of folds where the youngest rock are at the center and the older rocks are at the outside edges?
Synclines
What called to the rock bend downeard in a circular structure ?
Basin
It is a rock under ample stress that can crack or fracture?
Faults
What called to the fracture because there is a block of rock left standing on either side of a fracture line?
Joint
It is the rock that place on the top of the fault.
Footwall
It is the rock that place on the top of the fault.
Footwall
This can be found below the Earth.
Hanging wall
Faults can be calssified into 3. What are those?
- Normal Faults
- Reverse Faults
- Strike Slip Faults
This refers to the type of fault that can be found usually in divergent boundaries?
Normal Faults
This faults, in relationto the footwall, it develops as hanging wall derops down
Normal Faults
This type of fault is commonly found in convergent boundaries
Reverse Fault
This fault forms when a hanging wall moves up and this creates the world’s highest mountain range
Reverse Fault
What type of fault is commonly found on transform plate boundaries?
Strike slip fault
What type of faults formed when the walls move sideways?
Strike Slip Fault
