Fault block mountains are formed when large blocks of Earth's crust move up or down along faults. The stress that produces fault block mountains typically comes from the tectonic forces pushing or pulling on the Earth's crust, causing the blocks to move vertically relative to each other. This movement can create a tilted or lifted landscape with steep scarps and flat valleys.
In a reverse fault the maximum principal stress is horizontal, compression causes reverse (thrust) faults.
Fold-block mountains form when tension makes the lithosphere break into many normal faults.
Fault-block mountains form from vertical fault movement. These mountains are created when blocks of the Earth's crust are pushed up and down along fault lines, resulting in steep, jagged peaks and valleys. An example of a fault-block mountain range is the Sierra Nevada in California.
The San Andreas Fault is an example of a transform boundary in which plates slide past each other. This type of fault may also be known as a strike slip fault. During this plate motion, lithosphere is neither created nor destroyed. Shear stress causes the undeformed block of rock to experience tearing and smearing.
Shear stress pushes rocks in two different directions, causing them to slide or deform along parallel planes. This type of stress is common along fault lines where tectonic plates are moving past each other.
Tensional stress, which results from the pulling apart of the Earth's crust, causes fault block mountains to form. This stress leads to the extension and fracturing of the crust, resulting in the blocks of crust moving up or down along faults to create a mountain range.
In a reverse fault the maximum principal stress is horizontal, compression causes reverse (thrust) faults.
sliding
Fold-block mountains form when tension makes the lithosphere break into many normal faults.
Shear Stress
Fault-Block
faulting causes large blocks of the Earth's crust to drop down relative to other blocks
fault-block
fault block
Fault-Block
a fault block mountain.
Fault-Block