Rock Behavior Under Stress Flashcards
Naturally occurring substance
Rock
A process wherein heat and pressure change rocks physical and chemical make up.
Metamorphism
The physical change that may occur during metamorphism.
Folistion
Identify two main types of metamorphism.
Contact metamorphism
Regional metamorphism
It is a type of metamorphism where contact rocks and changes it by extreme heat.
Contact metamorphism
It is a type of metamorphism when great masses of rock are exposed to pressure.
Regional metamorphism
The force per unit that is placed on rock.
Stress
Enumerate 3 types of stress.
Tensional stress, Compressional stress, and shear stress.
Type type of stress that causes rocks to be pulled apart. It can be found at the divergent plate boundaries.
Tensional stress
Type of stress that causes rocks to fold or fracture it squeezes rocks together.
It is a common type of stress and convergent plate boundaries.
Compressional stress
Compression
Type of stress that happens when forces light pass each other in opposite direction. It can be result to slippage and translation. Common stress found in transform plate boundaries
Shear stress
Enumerate two types of geologic structure.
Folds
Faults
It is formed when rocks experience compressive stress and deformed physically.
Folds
Enumerate three types of folds
Monocline
Anticline
Syncline
Simple bend in the rock layers where the oldest rocks are at the bottom and the youngest are at the top.
Monocline
It is a type of folds that arches upward where the oldest rocks are found at the center of anticline. The youngest the rocks are covered over them at the top of the structure
Anticline
It is a type of fold that bends downward which rocks are curved down to a center.
Syncline
It is the geologic structure which rocks under ample stress crack or fracture. The fracture is called a joint because there is a block of rock left standing on either side of a fracture line. Foot wall is the rock that plays on top of the fault while hanging wall is below the fault.
Faults
Enumerate three types of faults.
Normal faults
Reverse faults
Strike slip faults
It is a type of faults that is most common at divergent boundaries. It develops as a hanging wall drops down. Example: East African Rift
Normal faults
A type of fault that is common at divergent boundaries. Forms when the hanging wall moves up. Create the highest mountain ranges. Example: Himalayas mountain and Rocky mountain
Reverse faults
A type of fault that is formed when walls move sideways. Either right lateral or left lateral. Common on transform plate boundaries. Example: San Andres Fault
Strike slip Faults
