What are the three types of differential stress?
Three kinds of differential stress occur.
- Tensional stress (or extensional stress), which stretches rock;
- Compressional stress, which squeezes rock; and.
- Shear stress, which result in slippage and translation.
Sep 29, 2015
What are the three types of differential stress quizlet?
List the three types of differential stress. Describe these changes. Compressional, tensional, shear.
Is differential stress is most likely to be present at a plate boundary?
Differential stresses are likely to occur at plate boundaries. All rocks are classified based on their texture and composition. Which of the following are metamorphic facies? ___________ are processes associated with the rock cycle.
Which tectonic boundary is associated with tensional stress quizlet?
Tensional stress happens at divergent plate boundaries where two plates are moving away from each other.
What causes differential stress?
Differential stress – Plate tectonic forces cause larger stress in one direction than in other directions. This difference in stress is responsible for the deformed nature of metamorphic rocks. Time – a certain amount of time is required for chemical reactions to equilibrium.
Which type of stress in rocks occurs in convergent plate boundaries?
Compressive stress Compressive stress happens at convergent plate boundaries where two plates move toward each other. Tensional stress happens at divergent plate boundaries where two plates are moving away from each other. Shear stress is experienced at transform boundaries where two plates are sliding past each other.
What type of tectonic event formed the main structures in the Valley and Ridge province of the Appalachian Mountains?
Continental collision in the late Paleozoic produced a fold and thrust belt in which Paleozoic sedimentary rocks of the Valley & Ridge were folded and transported westward along thrust faults. The Great Valley is underlain by a two-tier duplex in which the entire Cambrian and Ordovician rock sequence is repeated.
What is the result of differential stress on rocks?
Differential stress if acting on a rocks can have a profound affect on the appearance or texture of the rock. Rounded grains can become flattened in the direction of maximum stress. Minerals that crystallize or grow in the differential stress field can have a preferred orientation.
Where does differential stress occur?
Differential Stress – solids such as rocks can support different magnitudes of stress in different directions. The difference between the largest and smallest stress is called differential stress. The largest and smallest stress always act at right angles.
What type of stress is common at convergent boundaries?
Compressive stress happens at convergent plate boundaries where two plates move toward each other.
What type of stress would you expect at divergent plate boundaries?
Which type of stress would you expect to find at a divergent boundary? Tension. Where two plates are moving away from each other at a divergent boundary, you would observe tensional stress being exerted on the rocks. This would result in relatively thinner crust along the boundary.
Which of the following stresses occurs at divergent plate boundaries?
Tensional stress Tensional stress happens at divergent plate boundaries where two plates are moving away from each other. Shear stress is experienced at transform boundaries where two plates are sliding past each other.
What type of stress occurs at divergent boundaries?
Tensional stress Tensional stress happens at divergent plate boundaries where two plates are moving away from each other. Shear stress is experienced at transform boundaries where two plates are sliding past each other.
What type of stress is occurring at the Mid Atlantic Ridge?
tensional stress 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. Tensional stress can also occur well within an existing plate, if an existing plate begins to split itself into two pieces.
What type of faulting occurred in the Valley and Ridge province?
Part of the eastern boundary of the Great Valley is a zone of thrust faulting; crystalline rocks of the Blue Ridge Province have been shoved northwestward tens of miles over Paleozoic sedimentary rocks in places.
What plate boundary causes earthquakes?
convergent boundaries About 80% of earthquakes occur where plates are pushed together, called convergent boundaries. Another form of convergent boundary is a collision where two continental plates meet head-on. Since neither plate is stronger than the other, they crumple and are pushed up.
What type of stress occurs when plates move apart?
Tensional stress Tensional stress, sometimes known as extensional stress, stretches and pulls rocks apart. This type of stress occurs along divergent plate boundaries, where two tectonic plates are tearing away from one another.
What type of stress is most likely to occur at this boundary?
Shear stress is the most common stress at transform plate boundaries.
Which type of stress is most likely to occur at this boundary?
Shear stress is the most common stress at transform plate boundaries.
Which type of stress occurs when plates move apart?
Tensional stress Tensional stress, sometimes known as extensional stress, stretches and pulls rocks apart. This type of stress occurs along divergent plate boundaries, where two tectonic plates are tearing away from one another.
What type of stress is occurring at the Mid Atlantic ridge?
tensional stress 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. Tensional stress can also occur well within an existing plate, if an existing plate begins to split itself into two pieces.
What type of stress would occur at subduction zone?
Compression: When Plates Collide When plates press against each other, one plate's edge is pressed downward by the compression as the other plate's edge rides over it. These subduction zones appear as deep ocean trenches, usually facing mountains — the protruding edge of the overriding plate.
What type of stress causes divergent boundaries?
Tension Tension is the major type of stress at divergent plate boundaries. When forces are parallel but moving in opposite directions, the stress is called shear (figure 2).
What kind of mountains are formed by faulting?
Fault-block mountains are formed by the movement of large crustal blocks when forces in the Earth's crust pull it apart.
What are the boundaries of the Valley and Ridge province?
The Valley and Ridge is the westernmost physiographic province of the Appalachian Mountains, bounded to the east by the Blue Ridge, the south by the Piedmont, and the northwest by the Appalachian Plateau.
What does divergent plate boundaries cause?
A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth's mantle to the surface, solidifying to create new oceanic crust.
What does convergent boundary cause?
A convergent plate boundary is a location where two tectonic plates are moving toward each other, often causing one plate to slide below the other (in a process known as subduction). The collision of tectonic plates can result in earthquakes, volcanoes, the formation of mountains, and other geological events.
What type of stress occurs along a transform plate boundary?
Shear stress is the most common stress at transform plate boundaries.
What stress occurs at a convergent plate boundary?
Compressive stress Compressive stress happens at convergent plate boundaries where two plates move toward each other. Tensional stress happens at divergent plate boundaries where two plates are moving away from each other. Shear stress is experienced at transform boundaries where two plates are sliding past each other.
What type of stress occurs at a convergent plate boundary?
Compressive stress Compressive stress happens at convergent plate boundaries where two plates move toward each other. Tensional stress happens at divergent plate boundaries where two plates are moving away from each other. Shear stress is experienced at transform boundaries where two plates are sliding past each other.