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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.
Lateral strike-slip faults. Strike-slip faults occur when the blocks slide against each other laterally, parallel to the plane. The direction of the slip can be observed from either side of the fault, with the far block moving to the left indicating a left lateral slip, and the converse indicating a right lateral slip. See animation here [5]
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 ...
Horizontal motion is indicative of what is known as a strike-slip fault and does not usually show much vertical separation. This is when the motion along the fault is parallel to the fault trace, usually caused by underlying plate tectonics. These fault traces are often identified by some kind of linear feature on the surface such as a fence ...
Magmatism along strike-slip faults is the process of rock melting, magma ascent and emplacement, associated with the tectonics and geometry of various strike-slip settings, most commonly occurring along transform boundaries at mid-ocean ridge spreading centres [1] and at strike-slip systems parallel to oblique subduction zones. [2]
In the case of a fault-related event, it refers to the orientation of the fault plane that slipped, and the slip vector and is also known as a fault-plane solution. Focal mechanisms are derived from a solution of the moment tensor for the earthquake, which itself is estimated by an analysis of observed seismic waveforms. The focal mechanism can ...
Strike-slip: Active: 1868 Hayward (M6.3–6.7) Hellenic Arc: 1000: East Mediterranean Sea: Thrust/Strike-slip: 365 AD (M8.5+); 1303 AD (~8) Honey Lake Fault Zone: Nevada and California, United States: Dextral strike-slip: Active: Hope Fault: 130: South Island, New Zealand: Dextral strike-slip: Active: 1888 North Canterbury (M7.3), 2016 North ...
Transtension is the state in which a rock mass or area of the Earth's crust experiences both extensive and transtensive shear.As such, transtensional regions are characterised by both extensional structures (normal faults, grabens) and wrench structures (strike-slip faults).