Under which of these conditions would a body of rock be more likely to exhibit plastic behavior?
As already noted, different rocks at different temperatures will behave in different ways to stress. Higher temperatures lead to more plastic behaviour. Some rocks or sediments are also more plastic when they are wet. Another factor is the rate at which the stress is applied.
Under which conditions would a body of rock be most likely to exhibit brittle?
A rock deformed quickly is likely to exhibit brittle behavior.
Which type of stress is placed on rocks when they are pulled apart?
Tension stress pulls rocks apart. Tension causes rocks to lengthen or break apart. Tension is the major type of stress found at divergent plate boundaries.
Which of the following conditions will tend to make rocks change by plastic deformation rather than by brittle deformation?
Which of the following conditions will tend to make rocks change by plastic (or ductile) deformation rather than by brittle deformation? occurs when many atomic bonds are broken quickly and rock pieces separate. It is a permanent change of shape, while elastic strain is a temporary change of shape.
What happens to rock that is undergoing compression?
Compression squeezes rocks together, causing rocks to fold or fracture (break) (figure 1). Compression is the most common stress at convergent plate boundaries. Rocks that are pulled apart are under tension. Rocks under tension lengthen or break apart.
How will compressional force change a rock body?
How will compressional force change a rock body? Shorten and thicken the rock.
How do rocks behave under compression stress?
Compression stresses act toward each other, pushing or squeezing rock together. The stress causes the rock to break or fracture. In general, high temperatures and pressures favor ductile behavior and make fracture less likely to occur. The rock strains , but the change is not permanent.
What is compressional stress on rocks?
The stress that squeezes something. It is the stress component perpendicular to a given surface, such as a fault plane, that results from forces applied perpendicular to the surface or from remote forces transmitted through the surrounding rock.
How do rocks behave during compression stress?
Compression: Stress which causes rock to squeeze or push against other rock. Tension: Stress which occurs when rock pulls apart or gets longer. Shear Stress: Stress which occurs when tectonic plates move past each other causing rock to twist or change shape.
What types of deformation do rocks undergo during formation of an orogenic belt such as the Alps?
What changes do rocks undergo during formation of an orogenic belt such as the Alps? In orogenic belts, rocks undergo deformation as a response to stress. Deformation can include faulting, jointing, folding, and the development of metamorphic foliation.
What is compression stress on rocks?
The stress that squeezes something. It is the stress component perpendicular to a given surface, such as a fault plane, that results from forces applied perpendicular to the surface or from remote forces transmitted through the surrounding rock.
What changes do rocks undergo during formation of a mountain belt?
What changes do rocks undergo during formation of an orogenic belt such as the Alps? In orogenic belts, rocks undergo deformation as a response to stress. Deformation can include faulting, jointing, folding, and the development of metamorphic foliation.
What fault is caused by compression?
reverse-slip fault Reverse fault—the block above the inclined fault moves up relative to the block below the fault. This fault motion is caused by compressional forces and results in shortening. A reverse fault is called a thrust fault if the dip of the fault plane is small. (Other names: reverse-slip fault or compressional fault.)
Can rock undergo compression tension and shear stress all at once?
Therefore, it is not possible for a rock to undergo compression, tension, and shear stress all at once if they are applied in the same area. For these three forces to happen all at once, they have to occur at different areas or parts in the rock.
What will happen when the rocks undergo compressional and tensional stress under ductile deformation?
When rocks deform in a ductile manner, instead of fracturing to form faults or joints, they may bend or fold, and the resulting structures are called folds. Folds result from compressional stresses or shear stresses acting over considerable time.
What happens compressive stress?
Compressive stress is the force that is responsible for the deformation of the material such that the volume of the material reduces. It is the stress experienced by a material which leads to a smaller volume. High compressive stress leads to failure of the material due to tension.
What is compression in stress?
Compressive stress is a force that causes a material to deform to occupy a smaller volume. When a material is experiencing a compressive stress, it is said to be under compression. A high amount of compressive stress, such as tensile stress, leads to failure due to tension.
What types of deformation do rocks undergo during formation of an orogenic belt such as the Alps quizlet?
What changes do rocks undergo during formation of an orogenic belt such as the Alps? In orogenic belts, rocks undergo deformation as a response to stress. Deformation can include faulting, jointing, folding, and the development of metamorphic foliation.
What are the effects of compressional stress?
Compressional stresses cause a rock to shorten. Tensional stresses cause a rock to elongate, or pull apart. Shear stresses causes rocks to slip past each other.
Which of the following process does mountain building undergo?
Folding, faulting, volcanic activity, igneous intrusion and metamorphism can all be parts of the orogenic process of mountain building.
Which type of fault would probably occur from a compressional stress?
reverse faults In terms of faulting, compressive stress produces reverse faults, tensional stress produces normal faults, and shear stress produces transform faults.
What type of faults form from compressional stress?
Compressional stress, meaning rocks pushing into each other, creates a reverse fault. In this type of fault, the hanging wall and footwall are pushed together, and the hanging wall moves upward along the fault relative to the footwall.
What is compression in rocks?
Compression (squashing) occurs as tectonic plates are pushed together and the crust becomes shorter and thicker, building mountain ranges like the Alps or Himalayas. The rocks are folded and metamorphosed at depth. They may be faulted nearer the surface. Folded rocks in the Alps.
How is ductile deformation different from elastic deformation?
Ductile deformation requires internal fracturing of the rock, whereas elastic deformation does not.
What is compressional orogeny?
An orogeny is an event that takes place at a convergent plate margin when plate motion compresses the margin. An orogenic belt or orogen develops as the compressed plate crumples and is uplifted to form one or more mountain ranges.
What happens during the process of mountain building?
The mountain building process: Thick sequences of sedimentary and volcanic rocks accumulate during the accumulation stage. The mountain building process: Intense deformation of the layered rocks into folds and faults along with igneous and metamorphic activity characterizes the orogenic stage.
What type of fault usually occurs because of the compression?
Answer and Explanation: The type of fault that usually occurs because of compression is a reverse fault.
What types of faults are most commonly formed by compressional stress?
Reverse Faults – faults that are caused by compressional stress. In the case of a reverse fault, the hanging wall moves up relative to the footwall.
What is compressional force in geography?
The stress that squeezes something. It is the stress component perpendicular to a given surface, such as a fault plane, that results from forces applied perpendicular to the surface or from remote forces transmitted through the surrounding rock.
What changes do rocks undergo during formation of an orogenic belt?
What changes do rocks undergo during formation of an orogenic belt such as the Alps? In orogenic belts, rocks undergo deformation as a response to stress. Deformation can include faulting, jointing, folding, and the development of metamorphic foliation. Contrast brittle and ductile deformation.