Which of the following structures makes a pattern of rock layers that get older as you move outward from the hinge?
Which of the following structures makes a pattern of rock layers on the ground surface that looks like this: parallel stripes, showing bilateral symmetry across a midline (hinge), with rock getting older as you move outward from the hinge.
Which of the following conditions will tend to make rocks change by plastic or ductile deformation rather than by brittle deformation quizlet?
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.
When the buoyancy force pushing up on lithosphere equals the gravitational force pulling down on it?
Isostatic equilibrium occurs when a buoyancy force pushing the lithosphere up is less than the gravitational force pushing it down. All of the surface features on the Earth are the same elevation. As a member, you’ll also get unlimited access to over 84,000 lessons in math, English, science, history, and more.
What type of fault does the figure show?
| Fault type | Wikipedia Figure | Earthquakes |
|---|---|---|
| Normal | Cross section view | Generally minor, especially along ridges with hot, young (and weak) crust, and nothing to be damaged |
| Reverse/thrust | Cross section view | Major (include tsunamis) Megathrusts are major hazard |
| Oblique slip | Block diagram view |
What are the 5 types of faults?
Different types of faults include: normal (extensional) faults; reverse or thrust (compressional) faults; and strike-slip (shearing) faults.
What are the three types of fault?
There are three main types of fault which can cause earthquakes: normal, reverse (thrust) and strike-slip. Figure 1 shows the types of faults that can cause earthquakes. Figures 2 and 3 show the location of large earthquakes over the past few decades.
What are the two types of fault?
There are three different types of faults: Normal, Reverse, and Transcurrent (Strike-Slip).
- Normal faults form when the hanging wall drops down.
- Reverse faults form when the hanging wall moves up.
- Transcurrent or Strike-slip faults have walls that move sideways, not up or down.
What is an example of a normal fault?
A normal fault is a fault in which the hanging wall moves down relative to the footwall. An example of a normal fault is the infamous San Andreas Fault in California. The opposite is a reverse fault, in which the hanging wall moves up instead of down. A normal fault is a result of the earth’s crust spreading apart.
What are the 4 different types of faults?
There are four types of faulting — normal, reverse, strike-slip, and oblique. A normal fault is one in which the rocks above the fault plane, or hanging wall, move down relative to the rocks below the fault plane, or footwall.
Which type of fault is most dangerous?
Short-circuited fault is one of the most dangerous and common faults occurring in power system, which includes three-phase short circuit, two-phase short circuit, two-phase grounding short circuit and single-phase grounding short circuit.
What are the different models based on which faults are classified?
Basic fault models the stuck-at fault model. A signal, or gate output, is stuck at a 0 or 1 value, independent of the inputs to the circuit. the bridging fault model. Two signals are connected together when they should not be.
Is a normal fault vertical or horizontal?
Normal dip-slip faults are produced by vertical compression as Earth’s crust lengthens. The hanging wall slides down relative to the footwall. Normal faults are common; they bound many of the mountain ranges of the world and many of the rift valleys found along spreading margins of tectonic plates.
What is the angle of fault plane with the horizontal called?
Explanation: The dip of the fault is its inclination with the horizontal as measured in a vertical plane at right angles to the strike of the fault.
How do you identify fault structures?
A sharp change in dip amplitude or azimuth on a dipmeter log can indicate that a fault is present. Drag patterns may also be seen on the dip data above and below the fault intersection in the well (Figure 2).
What is the force applied to rocks?
LESSON SUMMARY. Stress is the force applied to a rock and may cause deformation. The three main types of stress are typical of the three types of plate boundaries: compression at convergent boundaries, tension at divergent boundaries, and shear at transform boundaries. Where rocks deform plastically, they tend to fold.
Are rock layers continuous in a normal fault?
Are the rock layers still continuous? No – they are now broken by the fault 4. Normal faults are formed by tensional forces 6. On the drawing label the hanging wall and the footwall.
What are the three components of deformation?
The total amount of deformation between two converging bodies is described by the three components of the displacement field: translation, rotation, and strain.
What are the 3 types of stress in geology?
There are three types of stress: compression, tension, and shear.
Which type of stress is a uniform?
There are four general types of stress. One type of stress is uniform, which means the force applies equally on all sides of a body of rock. The other three types of stress, tension, compression and shear, are non-uniform, or directed, stresses. All rocks in the earth experience a uniform stress at all times.
What does shear stress do to rocks?
Shearing in rocks. The white quartz vein has been elongated by shear. When stress causes a material to change shape, it has undergone strain or deformation. Deformed rocks are common in geologically active areas.
What is tensional stress?
Tensional stress is the stress that tends to pull something apart. 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 is an example of tensional stress?
Tensional stress, sometimes known as extensional stress, stretches and pulls rocks apart. A prime example of tensional stress is the mid-Atlantic ridge, where the plates carrying North and South America are moving west, while the plates carrying Africa and Eurasia are moving east.
What is a real example of tensional stress?
tensional stress: When something is being pulled apart. Causes a rock to elongate, or pull apart.
What does compressional stress look like?
Compressional stress involves forces pushing together, and the compressional strain shows up as rock folding and thickening. Shear stress involves transverse forces; the strain shows up as opposing blocks or regions of the material moving past each other.
What is a ductile deformation?
Ductile deformation involves the production of large, open folds in the sediments or rocks in front of an advancing glacier, which may develop into overfolds or begin to undergo internal thrusting due to continued ice advance.
What is compressional deformation?
Compressive deformation in the context of buried pipelines can be defined as the deformation of the pipe material when it is subjected to compressive forces. Compressive forces can be either stress or strain and can be measured using compressive strength tests.
What process causes stress in Earth’s crust?
What process causes stress in earth’s crust? The movement of earth’s plates create great forces that squeeze or pull rock in the crust. The collision of two plates can cause compression and folding of the crust over a wide area. Rock stressed by compression may bend without breaking.
What type of stress is shown?
Compression stress. COMPRESSION STRESS is shown in the image . COMPRESSION STRESS is shown in the image .
Which type of stress can cause an anticline?
compressional stress
Which type of stress causes the crust to become thinner?
Tension The stress force called tension pulls on the crust, stretching rock so that it becomes thinner in the middle.