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Schematic illustration of the two strike-slip fault types. The view is of the Earth's surface from above. In geology, the terms sinistral and dextral refer to the horizontal component of the movement of blocks on either side of a fault or the sense of movement within a shear zone. These are terms of relative direction, as the movement of the ...
A fault bend, or fault stepover, forms when individual segments of the fault overlap and link together. The type of structures which form along the strike-slip fault depend on the sense of slip relative to the sense of stepping. When a sinistral fault steps to the right or a dextral fault steps to the left, a restraining bend is formed. [2]
Strike-slip faults with left-lateral motion are also known as sinistral faults and those with right-lateral motion as dextral faults. [18] Each is defined by the direction of movement of the ground as would be seen by an observer on the opposite side of the fault. A special class of strike-slip fault is the transform fault when it forms a plate ...
Strike-slip tectonics or wrench tectonics is a type of tectonics that is dominated by lateral (horizontal) movements within the Earth's crust (and lithosphere).Where a zone of strike-slip tectonics forms the boundary between two tectonic plates, this is known as a transform or conservative plate boundary.
Vergence can be classified as dextral, when there is apparent clockwise rotation, or sinistral, when there is apparent anticlockwise rotation. [4] Although there is a shared relationship in the description of both vergence and fold pairs, they are independent of each other, as vergence is defined as a direction and not a shape.
Diagram showing the major different types of shear zones. Displacement, shear strain, and depth distribution are also indicated. Strength profile and change in rock type with depth in idealised fault/shear zone Margin of a dextral sense ductile shear zone (about 20 m thick), showing transition from schists outside the zone to mylonites inside, Cap de Creus,
A transform fault or transform boundary, is a fault along a plate boundary where the motion is predominantly horizontal. [1] It ends abruptly where it connects to another plate boundary, either another transform, a spreading ridge, or a subduction zone. [2] A transform fault is a special case of a strike-slip fault that also forms a plate boundary.
Atotsugawa Fault: Japan: Dextral strike-slip: Active: 1858 Hietsu earthquake (M~7) ... Piqiang Fault >70: China: Sinistral strike-slip: Active: 2024 Uqturpan earthquake: