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What is sheet jointing?
Sheet jointing is a geological term describing the formation of fractures in rock masses due to stress, mostly found in igneous and metamorphic rocks. These cracks run parallel to the exposed surfaces of the rock and are commonly found in areas where large masses of rock are exposed to weathering and erosion. Sheet joints can influence the stability and erosion of rock formations.
Folding is usually the result of what type of stress?
Folding is usually the result of compressional stress, where rocks are squeezed together and deform due to tectonic forces. This can lead to the bending or curving of rock layers.
Is a A normal fault is the result of compressional stress?
No, a normal fault is the result of extensional stress, where the hanging wall moves down relative to the footwall due to tensional forces pulling the crust apart. Compressional stress typically results in reverse faults, where the hanging wall moves up relative to the footwall due to compression forces pushing the crust together.
Are reverse faults rock layers placed under tensional stress?
No, reverse faults occur in response to compressional stress, not tensional stress. In a reverse fault, the hanging wall moves up relative to the footwall due to compression forces pushing the rocks together.
The squeezing together of rocks by stress is called?
The squeezing together of rocks by stress is called compression. This compressional stress can cause rocks to deform and change shape due to the forces acting upon them.
How are synclines formed?
Synclines are formed by the downward folding of rock layers in a trough-like structure. This folding occurs due to compressional forces in the Earth's crust, causing the layers to bend downward. Over time, erosion and other geological processes may further shape and expose the syncline.
What part of compressional waves has the area of greatest density?
The part of a compressional wave with the greatest density is the compression region, where particles are closest together due to the wave's compressional nature. This region represents the highest density of particles in the wave's pattern.
At a reverse fault what force pushes on rocks from opposite directions?
In a reverse fault, compressional forces push rocks from opposite directions, causing the rocks to move vertically along the fault plane. The hanging wall moves up relative to the footwall due to this compressional force.
How does the position of a hanging wall relative to the footwall give evidence of the stress placed on a rock layer?
The position of the hanging wall relative to the footwall in a fault zone can indicate the direction and type of stress that caused the faulting. In a normal fault, the hanging wall moves downward relative to the footwall due to extensional stress. In a reverse fault, the hanging wall moves up relative to the footwall due to compressional stress. Strike-slip faults show lateral movement caused by horizontal shear stress.
Explain what type of stress in the crust results in the formation of folded mountains?
Folded mountains are the result of compression stress in the earth's crust. This is a movement of plates that presses together or squeezes Earth's crust and is also known as convergent boundary.
What is friction stress?
stress caused due to friction
What is the difference between tensile stress and breaking stress?
tensile stress is due to just the tension in the load whereas breaking stress can be due to breaking,shearing or compression!
