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Structural discontinuity surface in the Earth's crust and upper mantle
In geology, a shear zone is a thin zone within the Earth's crust or upper mantle that has been strongly deformed, due to the walls of rock on either side
Shear_zone
Response of rock to deformation
may be difficult to place a distinct fault plane into the shear zone. Shear zones may form zones of much more intense foliation, deformation, and folding
Shear_(geology)
Geological feature in Temagami, Ontario, Canada
Dan Shear Zone is a north–south trending shear zone in Northeastern Ontario, Canada, located in the municipality of Temagami. The Big Dan Shear Zone was
Big_Dan_Shear_Zone
River in India
of Achankovil Shear Zone..." ResearchGate. Retrieved 24 October 2021. Praharaj, P.; S, R. (1 December 2018). "The Achankovil Shear Zone, Southern India:
Achankovil
Tectonic deformation zone in the western United States
of a spatially segregated displacement field. The eastern California shear zone is the portion of the Walker Lane that extends south from Owens Valley
Walker_Lane
Geological fault system in Africa
The Central African Shear Zone (CASZ) (or Shear System) is a wrench fault system extending in an ENE direction from the Gulf of Guinea through Cameroon
Central_African_Shear_Zone
Australian mountain building event
deformation: the Redbank Shear Zone and the Officer Basin. The Redbank Shear Zone in the Arunta Block, is a reverse sense shear zone dipping north at about
Alice_Springs_Orogeny
Biotite granite rocks that are considered to be the final fractionation product of magma
low in rare-earth elements. In northern Portugal, along the Vigo–Régua shear zone, the monzogranites belong to the syn-F3 biotite granitoid group. They
Monzogranite
the named shear zones affecting the rocks of Great Britain and the Isle of Man. See the main article on shear for a fuller treatment of shear in rocks
List of shear zones of Great Britain
List_of_shear_zones_of_Great_Britain
Ductile shear zone across Zambia
The Mwembeshi Shear Zone is a ductile shear zone about 550 million years old that extends ENE–WSW across Zambia. In Zambia, it separates the Lufilian Belt
Mwembeshi_Shear_Zone
Fault zone in Cameroon
The Foumban Shear Zone, or Central Cameroon Shear Zone (CCSZ), is a fault zone in Cameroon that has been correlated with the Pernambuco fault in northeastern
Foumban_Shear_Zone
Sierra Ballena Shear Zone or SBSZ is a sinistral strike-slip shear zone running across the Uruguayan Shield in eastern Uruguay and the Brazilian state
Sierra_Ballena_Shear_Zone
Earthquake in California
east, near the border with Nevada and Arizona, the Eastern California Shear Zone (ECSZ) takes up to 25 percent of the plate motion. The ECSZ consists of
1968 Borrego Mountain earthquake
1968_Borrego_Mountain_earthquake
Exposure of Precambrian crystalline rocks on the flanks of the Red Sea
shear zones include the Hamisana Shear Zone (665–610 Ma), the Ar-Rika–Qazaz Shear Zone (640–610 Ma) within the Najd Fault System, and the Oko Shear Zone
Arabian-Nubian_Shield
Province of the larger West Australian Shield in central South Australia
the Kalaran Orogeny which generated a major fold belt or shear zone, the Fowler Shear Zone, ca. 1600–1540 Ma. Economically important deposits found in
Gawler_Craton
Rock structures caused by shearing forces
fractures that are parallel to the major stress orientation, σ1, in a shear zone. They are subsequently filled by precipitation of a mineral, typically
En_echelon_veins
Large early layered igneous intrusion
Shear Zone (PSZ), the Thabazimbi-Murchison Lineament (TML), the Brits Shear Zone (BSZ), the Olifants River Shear Zone (ORSZ) and the Steelpoort Shear
Bushveld_Igneous_Complex
Geologic feature in California, United States
Sierra Nevada mountains called the Walker Lane or Eastern California Shear Zone. The reason for this is not clear. Several hypotheses have been offered
San_Andreas_Fault
depositional contacts, while faults and shear zones are of particular interest in structural geology. Faults and shear zones can be regarded as a form of secondary
Contact_(geology)
Metamorphic rock
ductilely deformed rocks formed by the accumulation of large shear strain, in ductile fault zones. There are many different views on the formation of mylonites
Mylonite
Geologic fault in north-west Wales
reactivates an older zone of ductile shear, the Berw Shear Zone. It forms the northwesternmost part of the [[Menai Strait Fault Zone]], which also includes
Berw_Fault
Economically recoverable concentrations of uranium within the Earth's crust
overall ore grade is only about 0.1% uranium. The Bohemian Massif contains shear zone hosted uranium deposits with the most important one being Rozna-Olsi in
Uranium_ore
Chain of volcanoes in the Gulf of Guinea
Foumban Shear Zone, which was active before and during the opening of the South Atlantic in the Cretaceous period. The western end of the shear zone is obscured
Cameroon_line
Major shear zone that developed in the Precambrian
Trans Brazilian Lineament (TBL), or Transbrasiliano Lineament, is a major shear zone that developed in the Precambrian period, and that has been reactivated
Trans_Brazilian_Lineament
Sedimentary basin of the Congo River in Central Africa
Craton Shear zones Aswa Dislocation Broodkop Shear Zone Central African Shear Zone Chuan Shear Zones Foumban Shear Zone Kandi Fault Zone Mwembeshi Shear Zone
Congo_Basin
Stack of originally planar surfaces
hinge zone. Concentric folds are caused by warping from active buckling of the layers, whereas similar folds usually form by some form of shear flow where
Fold_(geology)
Geology of peninsula in southwestern Europe
Malpica-Lamego line is a shear zone forming a line running north–south on the west side of the Galicia-Trás-os-Montes zone. It is 275 km long and associated
Geology of the Iberian Peninsula
Geology_of_the_Iberian_Peninsula
Canyon in Angola
Craton Shear zones Aswa Dislocation Broodkop Shear Zone Central African Shear Zone Chuan Shear Zones Foumban Shear Zone Kandi Fault Zone Mwembeshi Shear Zone
Tundavala_Gap
Glenburgh Terrane collided with the Yilgarn craton, creating the Errabiddy Shear Zone. Mineral lineation from the orogeny is common although it is sometimes
Glenburgh_orogeny
Shear zone in East Africa
the Aswa mylonite belt, Aswa Lineament or Aswa Shear Zone, is a north-west trending ductile shear zone that runs to the east of Lake Victoria in East
Aswa_Dislocation
ductile shear zone within which this outcrop resides. The spherical conglomerate pebbles stretched along the direction of movement of this shear zone, attaining
Lineation_(geology)
Geological feature in Japan
Yoshino River) to Mie Prefecture on the east coast. There is an active shear zone north of the river in the southern foothills of the Izumi Mountains, which
Japan_Median_Tectonic_Line
Natural hazard involving ground movement
called shear zones) in which large deformations are concentrated. Slides are also sub-classified by the form of the surface(s) or shear zone(s) on which
Landslide
July 4–5, 2019, earthquakes in California
foreshock originated along a strike-slip fault in the Eastern California Shear Zone, a region frequented by earthquake swarms, near the edge of Death Valley
2019_Ridgecrest_earthquakes
Mountain building event caused by the collision of Laurentia, Baltica and Avalonia
trending ductile sinistral shear zone in the Dalradian. The Donegal batholith (c. 428–400 Ma) was emplaced into this shear zone. The Leannan Fault is a major
Caledonian_orogeny
Laboratory equipment
A high-shear mixer disperses, or transports, one phase or ingredient (liquid, solid, gas) into a main continuous phase (liquid), with which it would normally
High-shear_mixer
System of geological faults in northern Chile
deformation occurred in the Late Jurassic, creating north-striking mylonitic shear zones. A belt formed through a compressive regime in the early Cretaceous,
Atacama_Fault
Geologic feature in Washington and Oregon, United States
the Oregon—Idaho border where it hits the north-trending Western Idaho Shear Zone (WISZ), a nearly vertical tectonic boundary between the accreted oceanic
Olympic–Wallowa_lineament
project in Finland. The projects are primarily located within the Pajala shear zone, in the northern Baltic Shield (also sometimes called the Fennoscandian
Northland_Resources
Tectonic process
component. The trench parallel component is accommodated by localized shear zones (short-term deformation) or trench parallel strike slip fault systems
Oblique_subduction
Area of ore deposits in Colorado, United States
beginning in 1858. The belt is a "northeast-striking zone defined by: a Proterozoic shear zone system (McCoy, 2001); a suite of Laramide-aged plutons
Colorado_Mineral_Belt
Underground mine in Ontario, Canada
michenerite was crystallized. The zonation of the sulfarsenides was preserved through a later stage of deformation caused by shear zones. However, the PGM were "
Creighton_Mine
Defunct gold mine in Northwest Territories, Canada (1948–2004)
the gold deposits was not known until 1944, when a massive gold-bearing shear zone was uncovered beneath the drift-filled Baker Creek Valley. The discovery
Giant_Mine
Geologic formation in Northeastern Ontario, Canada
northeast-trending shear zones less than 5 m (16 ft) wide intersect the edifice, extending along the Net Lake-Vermilion Lake Deformation Zone. This layered
Temagami_Greenstone_Belt
Highway in Antarctica
Plateau are relatively stable. Most crevasses occur in the short steep shear zone between them, where the road climbs along Leverett Glacier from near the
South_Pole_Traverse
Geologic fault in Brazil
The Pernambuco Fault or Pernambuco Shear Zone in northeastern Brazil is a fault radiating from the Trans Brazilian Lineament eastwards to the coast, a
Pernambuco_Fault
Physical attribute in geology
determine the shear sense in shear zones and their associated rocks, usually mylonites. Oblique foliation is mainly encountered in shear zones, where it forms
Oblique_foliation
accepted definition of the Main Central Thrust is that it is a ductile shear zone along which the High-grade Great Himalayan Crystalline complex was placed
Main_Central_Thrust
Geologic massif that covers a large area in the northwest of France
striking shear zones (the North and South Armorican Shear Zones). The divisions are simply called the North, Central and South Armorican Zones. Generally
Armorican_Massif
Basin in Ogaden region that reserves crude oil and natural gas
Craton Shear zones Aswa Dislocation Broodkop Shear Zone Central African Shear Zone Chuan Shear Zones Foumban Shear Zone Kandi Fault Zone Mwembeshi Shear Zone
Ogaden_Basin
Desert in Mauritania and Mali
Craton Shear zones Aswa Dislocation Broodkop Shear Zone Central African Shear Zone Chuan Shear Zones Foumban Shear Zone Kandi Fault Zone Mwembeshi Shear Zone
El_Djouf
Fault zone in the Bolivian Andes
The Cochabamba Fault Zone or Cochabamba Shear Zone (Spanish: Zona de falla de Cochabamba) is an east-southeast trending zone of sinistral strike-slip
Cochabamba_Fault_Zone
Mesoproterozoic mountain-building event
high-strain shear zone separates the dome into the highlands to the southeast and the lowlands to the northwest. It is believed that the shear zone (the Carthage-Colton)
Grenville_orogeny
Tectonic plate underlying Africa
recent Neoproterozoic sediments. The plate includes shear zones such as the Central African Shear Zone (CASZ) where, in the past, two sections of the crust
African_plate
Mountain range in California, United States
volcanic field located on a fault zone within the western Mina Deflection near the northern Eastern California shear zone (ECSZ) and the Walker Lane belt
Adobe_Hills
Large endorheic basin mainly in Kenya and Ethiopia
Craton Shear zones Aswa Dislocation Broodkop Shear Zone Central African Shear Zone Chuan Shear Zones Foumban Shear Zone Kandi Fault Zone Mwembeshi Shear Zone
Turkana_Basin
Archean rocks. It includes three zones. The Zona Transversal is in the central sub-province between the Pernambuco Shear Zone and the São Francisco Craton
Geology_of_Brazil
Liquid and/or gas trapped within a crystal
fluid activities are considerably more in shear zones in an orogenic belt, the fluid inclusions in a shear zone have been also used to explore the seismic
Fluid_inclusion
Geological region in Central Asia
surrounded by three large, former continents: to the north-east the Gornostaev Shear Zone separates it from Siberia with which it collided during the Carboniferous;
Kazakhstania
Medium-sized continental block in Uruguay, eastern Argentina and southern Brazil
the Sierra Ballena Shear Zone (SBSZ). West of Cuchilla Dionisio, the Nico Pérez Terrane is delimited by two longitudinal shear zones: the SBSZ and the
Río_de_la_Plata_Craton
The Link Lake Deformation Zone, also known as the Link Lake Zone of Deformation and the Link Lake Shear Zone, is a zone of deformation in Strathy Township
Link_Lake_Deformation_Zone
Neoproterozoic to Cretaceous landmass
continents, including the Central African Rift System and the Central African Shear Zone which lasted until c. 85 Ma. At Brazilian latitudes spreading is more
Gondwana
Bed of an extinct river in Sudan
is the bed of an extinct river in Sudan. Following the Central African Shear Zone, it stretches for 560 km from the lake of Umm Badr in North Kurdufan NE-trending
Wadi_al-Malik
Two types of chirality
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 blocks
Sinistral_and_dextral
within the SGT: Moyar-Bhavani Shear Zone: Separates the Dharwar Craton from the Nilgiri Block. Palghat-Cauvery Shear Zone (PCSZ): A massive tectonic boundary
Geography_of_India
Granite and metamorphic rock in Western Australia
from the Yilgarn craton to the south by a major fault, the Errabiddy Shear Zone. To the east and northeast rocks of the complex are overlain unconformably
Gascoyne_Complex
Tiny intergrowths of quartz and feldspar in rocks
due to deformation-induced Na-Ca-metasomatism. His sampling beyond the shear zone revealed an undeformed, felsic biotite diorite whose primary plagioclase
Myrmekite
Seismic fault in China and Vietnam
along the fault trace. The Red River Fault was a sinistral strike-slip shear zone until Miocene times when it became reactivated as a brittle dextral strike-slip
Red_River_Fault
major shear zones both running roughly in north-south direction the dextral Sarandí del Yí-Piriápolis Shear Zone and the sinistral Sierra Ballena Shear Zone
Geology_of_Uruguay
Rift basin in the Niger Delta
caused by the thickened crust. Moving basinward is a transition zone, and a contraction zone, which lies in the deep-sea part of the basin. The sediment fill
Niger_Delta_Basin_(geology)
significant vertical displacement along the Ross Lake fault zone, a major orogen-parallel shear zone in the Cordillera of western North America". Tectonics
Ross_Lake_Fault
Strike slip shear zone in Uruguay
The Sarandí del Yí Shear Zone is a strike slip shear zone in Uruguay. The shear zone has a NNW-SSE orientation and a dextral relative direction. It runs
Sarandí_del_Yí_Shear_Zone
Failure mechanism within deformed materials
along the shear zone, thereby reducing the barrier for shear band propagation. Timothy, S. P. (1987-02-01). "The structure of adiabatic shear bands in
Adiabatic_shear_band
Series of major mountain-forming events in the Neoproterozoic
produced by the closure of the Adamastor Ocean, this belt includes a shear zone known as the 733–550 Ma-old Puros lineament in southern Angola. It contains
Pan-African_orogeny
the northeast portion of the island down to the south in the Ranotsara shear zone. Rocks in the northern portion of Madagascar are greenstone belts, from
Geology_of_Madagascar
Linear landscape feature
straight coastline or indeed a combination of these features. Fracture zones, shear zones and igneous intrusions such as dykes can also be expressed as geomorphic
Lineament
Major intracontinental shear zone between the Hearne craton and Wyoming craton
The Great Falls Tectonic Zone is a major intracontinental shear zone between the Hearne craton and Wyoming craton basement rock of the Archean Eon which
Great_Falls_Tectonic_Zone
Craton Shear zones Aswa Dislocation Broodkop Shear Zone Central African Shear Zone Chuan Shear Zones Foumban Shear Zone Kandi Fault Zone Mwembeshi Shear Zone
Iullemmeden_Basin
Complex. The district is traverse by the NNE-oriented Infiernillo Shear Zone. This shear zone there is marked by mylonites and synkinematic migmatites. Alteration
San_Juan_(mining_district)
Mineralized zone in Ontario, Canada
secondary commodities. It occurs in a quartz vein within a diabase-porphyry shear zone. Pyrite and chalcopyrite are present in small amounts. The Occurrence
Danlou_Occurrence
Geologic region of Iberia and north Africa
arcuate mountain belt. A major left-lateral strike-slip fault zone, the Trans-Alboran Shear Zone, crosscuts the Gibraltar Arc with a NE trend from the eastern
Gibraltar_Arc
Tunnel collapse and rescue in India
Himalayas which is a major geological fault and is generally accepted to be a shear zone. The Border Roads Organisation said in a statement that the tunnel was
Uttarakhand_tunnel_rescue
Earthquake with a hypocenter depth exceeding 300 km
response to shear stress in a fine-grained shear zone. The transformation occurs along the plane of maximal shear stress. Rapid shearing can then occur
Deep-focus_earthquake
Orogenic belt in southwestern Sweden and southern Norway
Eastern Segment. The segments are separated from each other by large-scale shear zones. Bamble Terrane: The Bamble Terrane lies together with Kongsberg Terrane
Sveconorwegian_orogeny
Mountain range along the Pacific coast of Mexico
numerous grabens and half-grabens, as well an east–west left shear zone, the El Roble shear zone. At the west end of these grabens and half-grabens are the
Sierra_Madre_Occidental
Mountains in South Island, New Zealand
Gorge Fault which places chlorite zone TZ III schist against TZ IV. This low-angle fault zone has resulted in shear zone-hosted gold mineralisation in the
Dunstan_Mountains
American geologist
recrystallization of feldspar: a mechanism for ductile shear zone formation: Tullis and Yund (1985) Ductile shear zone from brittle precursors in feldspathic rocks:
Jan_Tullis
Stress test with different levels of stress in each perpendicular direction
In materials science, a triaxial shear test is a common method to measure the mechanical properties of many deformable solids, especially soil (e.g.,
Triaxial_shear_test
Unincorporated community in San Bernardino County, California, United States
earthquakes. Trona is located in the Eastern California Shear Zone, a seismically active zone that accommodates up to 25% of the fault movement between
Trona, San Bernardino County, California
Trona,_San_Bernardino_County,_California
Type of rock
jasperoids are thought to form by extreme alteration of wall rocks within a shear zone, and may occur in sediments, andesites, trachytes and basalts. These bodies
Jasperoid
Norumbega fault or the Norumbega fault system is a 20 to 25km wide fault and shear zone of late Paleozoic era. It developed just inland from the Maine coast,
Norumbega_fault
strike-slip. Transtensional shear zones are characterized by the co-existence of different structures, related to both strike-slip shear and extension. End member
Transtension
Desert basin in Nevada, United States
Nevada. The south side of the valley is along the "Las Vegas Valley Shear Zone", and to the east is the Pintwater Range, to the southeast is the Las
Indian Springs Valley (Nevada)
Indian_Springs_Valley_(Nevada)
Geological feature in Australia
Kancoona-Kiera Shear Zone and the Gilmore Shear Zone. Other metamorphic complexes are Kuark, Camblong, Cooma, and Jerangle in the eastern side. These zones made
Lachlan_Fold_Belt
Gold mine in Red Lake, Ontario, Canada
archdetails:mdi&uuid=MDI52N04SW00014 [dead link] "Sanshaw Locates New Shear Zone", The Northern Miner, 10 September 1936. p. 21. Frank Rasky, Industry
Sanshaw_Gold_Mine
Earthquakes in Iran
subduction zone. In eastern Iran (south of the Kopet Dag), north–south trending right-lateral strike-slip faults in a 400 km (250 mi)-wide shear zone accommodate
1871–72_Quchan_earthquakes
Large granitic plutonic formation in central North Carolina
post-metamorphic, Alleghanian-age granite plutons. Magma generation was related to shear zone melt during the late Alleghenian Orogeny. The Churchland Plutonic suite
Churchland_Plutonic_Suite
Antarctica 2 serious burn injuries 2016 Snowmobile 1 McMurdo Shear Zone Accident McMurdo Shear Zone, Antarctica 2016 Aircraft 1 Pilot crevasse fatality unloading
List of disasters in Antarctica by death toll
List_of_disasters_in_Antarctica_by_death_toll
Belt of Archean to Paleoproterozoic rock in the Canadian Shield
Territories is bounded by the Great Slave Lake shear zone to the north and by the subsurface Snowbird Tectonic Zone to the south. TMZ is an Andean-type continental
Taltson_magmatic_zone
Earthquake in Papua Province, Indonesia
east–west left-lateral shear at a rate of 80 mm/yr. The shear zone is approximately 300 km (190 mi) long and is a complex zone of faults. The Sorong,
1979_Yapen_earthquake
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