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Journal articles on the topic 'Mylonite'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

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1

Hanmer, Simon, Randy Parrish, Michael Williams, and Chris Kopf. "Striding-Athabasca mylonite zone: Complex Archean deep-crustal deformation in the East Athabasca mylonite triangle, northern Saskatchewan." Canadian Journal of Earth Sciences 31, no. 8 (1994): 1287–300. http://dx.doi.org/10.1139/e94-111.

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The geophysically defined Snowbird tectonic zone is manifested in northernmost Saskatchewan as a deep-crustal, multistage mylonitic structure, the East Athabasca mylonite triangle. The triangle, located at the northeastern apex of a stiff, crustal-scale "lozenge," is composed of mid-Archean annealed mylonites and late Archean ribbon mylonites, formed during two granulite facies events (850–1000 °C, 1.0 GPa). The flow pattern in the mylonites is geometrically and kinematically complex, and corresponds to that expected adjacent to the apex of a stiff elliptical volume subjected to subhorizontal

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2

Pearson, A., F. Heidelbach, and H. R. Wenk. "Texture Analysis of Quartz in a Granite Mylonite by EBSP-Orientation Imaging Microscopy." Textures and Microstructures 29, no. 3-4 (1997): 185–99. http://dx.doi.org/10.1155/tsm.29.185.

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The crystallographic preferred orientation (texture) of the quartz phase in a mylonitic leucogranite from the Santa Rosa mylonite zone was investigated using automated analysis of electron backscattering patterns (EBSP) in the scanning electron microscope (SEM). The separation of the quartz diffraction patterns from patterns of other constituents (feldspar, mica, etc.) in this polymineralic rock was achieved using an image quality parameter. The quartz phase displays a texture typical for high temperature mylonites (c-axis maximum in the intermediate strain direction). The misorientation distr

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3

V, Thirukumaran, Biswal T.K, Sundaralingam K, Sowmya V, Boopathi S, and Mythili R. "Strain Pattern Analysis of Mylonites From Sitampundi-Kanjamalai Shear Zone, Thiruchengode, South India." International Journal of Civil, Environmental and Agricultural Engineering 1, no. 1 (2019): 25–34. http://dx.doi.org/10.34256/ijceae1914.

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This study aims to investigate the petrography and strain pattern of mylonites from parts of N-S trending Sitampundi-Kanjamalai Shear Zone (SKSZ) around Thiruchengode. The petrographic study indicates the presence of recrystallized quartz, K-feldspar, plagioclase, biotite and some hornblende. The kinematic analysis of Mylonites was done with the help of shear sense indicators such as recrystallized type quartz (quartz ribbon) around the cluster of feldspar, S-C fabric shows dextral shear sense and some sinisterly shear sense in some parts of SASZ which can be considered as a product of partiti

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4

Owen, J. V. "Geochemical changes accompanying the mylonitization of diverse rock types from the Grenville Front zone, eastern Labrador." Canadian Journal of Earth Sciences 25, no. 9 (1988): 1472–84. http://dx.doi.org/10.1139/e88-140.

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The relationship between mineralogy and bulk composition was examined in mylonites developed in a variety of rock types from the Grenville Front zone of eastern Labrador. Mylonites developed from olivine-, pyroxene-, and (or) amphibole-bearing protoliths are the most altered, typically being enriched in K2O and volatiles and depleted in CaO compared with the protolith. Bulk-compositional modification was accompanied by the formation of almandine-rich garnet and (or) relatively ferruginous hornblende in medium-grade (epidote–amphibolite to lower amphibolite facies) mylonites derived from both m

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5

MALATESTA, C., L. FEDERICO, L. CRISPINI, and G. CAPPONI. "Fluid-controlled deformation in blueschist-facies conditions: plastic vs brittle behaviour in a brecciated mylonite (Voltri Massif, Western Alps, Italy)." Geological Magazine 155, no. 2 (2017): 335–55. http://dx.doi.org/10.1017/s0016756816001163.

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AbstractA blueschist-facies mylonite crops out between two high-pressure tectono-metamorphic oceanic units of the Ligurian Western Alps (NW Italy). This mylonitic metabasite is made up of alternating layers with different grain size and proportions of blueschist-facies minerals.The mylonitic foliation formed at metamorphic conditions of T = 220–310 °C and P = 6.5–10 kbar. The mylonite shows various superposed structures: (i) intrafoliar and similar folds; (ii) chocolate-tablet foliation boudinage; (iii) veins; (iv) breccia.The occurrence of comparable mineral assemblages along the foliation, i

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6

SARKARINEJAD, KHALIL, and SOMAYE DERIKVAND. "Structural and kinematic analyses of the basement window within the hinterland fold-and-thrust belt of the Zagros orogen, Iran." Geological Magazine 154, no. 5 (2016): 983–1000. http://dx.doi.org/10.1017/s0016756816000558.

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AbstractThe Zagros hinterland fold-and-thrust belt is located in the central portion of the Zagros Thrust System and consists of the exhumed basement windows associated with NW-striking and NE-dipping flexural duplex structures that contain in-sequence thrusting and related folds. Mylonitic nappes of the basement were exhumed along deep-seated sole thrusts of the Zagros Thrust System. Lattice preferred orientation (LPO) c-axes of quartz show asymmetric type-1 crossed girdles that demonstrate a non-coaxial deformation under plane strain conditions. Based on the opening angles of quartz c-axis f

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7

Hanmer, Simon. "Textural map units in quartzo-feldspathic mylonitic rocks." Canadian Journal of Earth Sciences 24, no. 10 (1987): 2065–73. http://dx.doi.org/10.1139/e87-195.

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The classical macrotextural subdivision of quartzo-feldspathic mylonitic rocks yields only three rock types: protomylonite, mylonite, and ultramylonite. This restriction impedes detailed mapping of the internal textural transitions common in wide, deep-seated, crustal-scale shear zones, where such transitions may occur over kilometres and involve several clearly mappable textural types. The introduction of two objectively defined field mapping terms, "homoclastic" and "heteroclastic," describing the macroscopic grain-size distribution within the porphyroclast population provides descriptive fl

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8

Owen, J. Victor. "Determination of the finite-strain ellipsoid from deformed porphyroblastic mineral aggregates and preferentially oriented feldspars in a mylonitized metamafic dyke." Canadian Journal of Earth Sciences 26, no. 11 (1989): 2333–40. http://dx.doi.org/10.1139/e89-199.

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Strain in a narrow mylonite zone has been estimated from deformed garnetiferous porphyroblastic aggregates and from preferentially oriented plagioclase porphyroclasts with high aspect ratios. In the undeformed metamafic dyke hosting the mylonite, the mineral aggregates have spheroidal to slightly oblate shapes, and plagioclase is nearly randomly oriented. In the mylonite, the mineral aggregates are prolate ellipsoids, and plagioclase in the aggregates and matrix is symmetrically oriented about the mylonitic planar fabric. Comparison with the radii of spheres of equal volume shows that the elli

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9

Festa, Vincenzo, Annamaria Fornelli, Francesca Micheletti, Richard Spiess, and Fabrizio Tursi. "Ductile Shearing and Focussed Rejuvenation: Records of High-P (eo-)Alpine Metamorphism in the Variscan Lower Crust (Serre Massif, Calabria—Southern Italy)." Geosciences 12, no. 5 (2022): 212. http://dx.doi.org/10.3390/geosciences12050212.

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In the present study, we unveil the real significance of mylonitic reworking of the polymetamorphic crystalline basement in the Serre Massif of Calabria (Southern Italy). We use a multidisciplinary approach to comprehend the structural, microstructural and petrologic changes that occurred along a, so far, not much considered shear zone affecting the Variscan lower crustal rocks. It was never before studied in detail, although some late Cretaceous ages were reported for these mylonites, suggesting that this shear zone is of prime importance. Our observations reveal now that the formation of the

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10

Farkašovský, Roman, Katarína Bónová, and Marián Košuth. "Microstructural, modal and geochemical changes as a result of granodiorite mylonitisation – a case study from the Rolovská shear zone (Čierna hora Mts, Western Carpathians, Slovakia)." Geologos 22, no. 3 (2016): 171–90. http://dx.doi.org/10.1515/logos-2016-0019.

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Abstract Strong tectonic remobilisation and shear zone development are typical features of the easternmost part of the Veporicum tectonic unit in the Western Carpathians. The granodiorite mylonites in the area of the Rolovská shear zone (Čierna hora Mts) underwent a complex polystage evolution during the Hercynian and Alpine orogenies. Deformation during the latter reached greenschist facies under metamorphic conditions. Mylonites are macroscopically foliated rocks with a stretching lineation and shear bands. Structurally different mylonite types, ranging from protomylonites to ulramylonites w

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11

Soda, Yusuke, Taku Matsuda, Sachio Kobayashi, Motoo Ito, Yumiko Harigane, and Takamoto Okudaira. "Reversely zoned plagioclase in lower crustal meta-anorthosites: An indicator of multistage fracturing and metamorphism in the lower crust." American Mineralogist 105, no. 7 (2020): 1002–13. http://dx.doi.org/10.2138/am-2020-7284.

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Abstract This paper describes the formation mechanism of reversely zoned plagioclase, which has been observed frequently in lower crustal shear zones and is indicative of multistage fracturing and meta-morphism in the lower crust, by studying the microstructural and chemical characteristics of plagioclase in sparsely fractured anorthosites and anorthositic mylonites from the Eidsfjord shear zone, Langøya, northern Norway. Based on the field relationship between sparsely fractured anorthosite and anorthositic mylonite, the fracturing of anorthosite occurred before the formation of mylonite. In

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12

SARTINI-RIDEOUT, C., J. A. GILOTTI, and W. C. McCLELLAND. "Geology and timing of dextral strike-slip shear zones in Danmarkshavn, North-East Greenland Caledonides." Geological Magazine 143, no. 4 (2006): 431–46. http://dx.doi.org/10.1017/s0016756806001968.

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The North-East Greenland eclogite province is divided into a western, central and eastern block by the sinistral Storstrømmen shear zone in the west and the dextral Germania Land deformation zone in the east. A family of steep, NNW-striking dextral mylonite zones in the Danmarkshavn area are geometrically and kinematically similar to the ductile Germania Land deformation zone, located 25 km to the east. Amphibolite facies deformation at Danmarkshavn is characterized by boudinage of eclogite bodies within quartzofeldspathic host gneisses, pegmatite emplacement into the boudin necks and subseque

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13

O'Neill, J. Michael, Jeff D. Lonn, David R. Lageson, and Michael J. Kunk. "Early Tertiary Anaconda Metamorphic Core Complex, southwestern Montana." Canadian Journal of Earth Sciences 41, no. 1 (2004): 63–72. http://dx.doi.org/10.1139/e03-086.

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A sinuous zone of gently southeast-dipping low-angle Tertiary normal faults is exposed for 100 km along the eastern margins of the Anaconda and Flint Creek ranges in southwest Montana. Faults in the zone variously place Mesoproterozoic through Paleozoic sedimentary rocks on younger Tertiary granitic rocks or on sedimentary rocks older than the overlying detached rocks. Lower plate rocks are lineated and mylonitic at the main fault and, below the mylonitic front, are cut by mylonitic mesoscopic to microscopic shear zones. The upper plate consists of an imbricate stack of younger-on-older sedime

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14

Bianco, Caterina. "The Capo Castello Shear Zone (Eastern Elba Island): Deformation at the Contact between Oceanic and Continent Tectonic Units." Geosciences 10, no. 9 (2020): 361. http://dx.doi.org/10.3390/geosciences10090361.

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Low-grade mylonitic shear zones are commonly characterized by strain partitioning, with alternating low strain protomylonite and high strain mylonite and ultramylonite, where the shearing is most significant. In this paper the capo Castello shear zone is analyzed. It has developed along the contact between continental quartzo-feldspathic, in the footwall, and oceanic ophiolitic units, in the hangingwall. The shear zone shows, mostly within the serpentinites, a heterogeneous strain localization, characterized by an alternation of mylonites and ultramylonites, without a continuous strain gradien

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15

Young, Erik M., Christie D. Rowe, and James D. Kirkpatrick. "Shear zone evolution and the path of earthquake rupture." Solid Earth 13, no. 10 (2022): 1607–29. http://dx.doi.org/10.5194/se-13-1607-2022.

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Abstract. Crustal shear zones generate earthquakes, which are at present unpredictable, but advances in mechanistic understanding of the earthquake cycle offer hope for future advances in earthquake forecasting. Studies of fault zone architecture have the potential to reveal the controls on fault rupture, locking, and reloading that control the temporal and spatial patterns of earthquakes. The Pofadder Shear Zone exposed in the Orange River in South Africa is an ancient, exhumed, paleoseismogenic continental transform which preserves the architecture of the earthquake source near the base of t

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16

Næraa, Tomas, Jens Konnerup-Madsen, Bjørn Hageskov, and Lalu Prasad Paudel. "Structure and petrology of the Dadeldhura Group, far western Nepal, Himalaya." Journal of Nepal Geological Society 35 (December 31, 2007): 21–28. http://dx.doi.org/10.3126/jngs.v35i0.23631.

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The granites, phyllites, schists, and gneisses of the Dadeldhura Group exhibit a significant Himalayan metamorphic imprint. The rocks of the group constitute a synform and the group is delimited by thrusts. The North Dadeldhura Thrust (NDT) zone is dominated by granitic mylonite with subordinate quartzite, quartz-chlorite schist, and amphibolite. In the quartz-chlorite schist from the NDT zone, relict kyanite is observed, which together with recrystallisation textures in the granitic mylonite indicate that low-temperature syn-tectonic retrogression has affected the thrust zone. Prograde garnet

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17

Aksoyoglu, S. "Cesium sorption on mylonite." Journal of Radioanalytical and Nuclear Chemistry Articles 140, no. 2 (1990): 301–13. http://dx.doi.org/10.1007/bf02039502.

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18

Leiss, B., S. Siegesmund, and K. Weber. "Texture Asymmetries as Shear Sense Indicators in Naturally Deformed Mono- and Polyphase Carbonate Rocks." Textures and Microstructures 33, no. 1-4 (1999): 61–74. http://dx.doi.org/10.1155/tsm.33.61.

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The microstructural and quantitative texture analyses of a naturally deformed calcite mylonite, a dolomite mylonite and a dolomitic calcite mylonite reveal different texture asymmetries for comparable deformation conditions. Calcite shows a c-axis maximum rotated against the shear sense with regard to the main shear plane. In contrast, the dolomite shows a c-axis maximum rotated with the shear sense. In accordance with the experimental and simulated textures from the literature, this difference proves e-twinning and r-slip for calcite and f-twinning and c-slip for dolomite as the main deformat

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19

Cooper, Frances J., John P. Platt, and Whitney M. Behr. "Rheological transitions in the middle crust: insights from Cordilleran metamorphic core complexes." Solid Earth 8, no. 1 (2017): 199–215. http://dx.doi.org/10.5194/se-8-199-2017.

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Abstract. High-strain mylonitic rocks in Cordilleran metamorphic core complexes reflect ductile deformation in the middle crust, but in many examples it is unclear how these mylonites relate to the brittle detachments that overlie them. Field observations, microstructural analyses, and thermobarometric data from the footwalls of three metamorphic core complexes in the Basin and Range Province, USA (the Whipple Mountains, California; the northern Snake Range, Nevada; and Ruby Mountains–East Humboldt Range, Nevada), suggest the presence of two distinct rheological transitions in the middle crust

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20

Li, Kunmeng, Yuanhui Li, Shuai Xu, Zhipeng Xiong, and Long An. "Research on the Failure and Fracture Evolution of Mylonite with a Prefabricated Circular Opening by Discrete Element Method." Advances in Civil Engineering 2021 (May 11, 2021): 1–10. http://dx.doi.org/10.1155/2021/5510150.

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In this paper, the failure and fracture process of mylonite with a prefabricated circular opening under biaxial loading is studied by PFC2D code. Firstly, the hoop stress change law of opening wall in the process of loading is theoretically analyzed and three fracture patterns of rocks are proposed. Secondly, the biaxial loading tests of mylonite for numerical simulation are carried out, and the failure and fracture are analyzed from three aspects of space-time evolution of microcracks, energy conversion process, and final damage patterns. As the load progresses, the microcracks start to initi

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21

VAUGHAN, ALAN P. M., SIMON P. KELLEY, and BRYAN C. STOREY. "Mid-Cretaceous ductile deformation on the Eastern Palmer Land Shear Zone, Antarctica, and implications for timing of Mesozoic terrane collision." Geological Magazine 139, no. 4 (2002): 465–71. http://dx.doi.org/10.1017/s0016756802006672.

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Ar–Ar dating of high-strain ductile mylonites of the Eastern Palmer Land Shear Zone in the southern Antarctic Peninsula indicates that reverse movement on the shear zone occurred in late Early Cretaceous times (Albian), and not latest Jurassic times as previously supposed. The Eastern Palmer Land Shear Zone forms a major tectonic boundary, separating suspect arc terranes from rocks of Gondwana continental affinity. The dated mylonites are developed in Lower Jurassic plutonic rocks at Mount Sullivan, eastern Palmer Land, and form part of a zone of ductile reverse deformation up to 25 km wide. B

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22

Culshaw, Nicholas, Christopher Gerbi, and Laura Ratcliffe. "Macro- and microstructural analysis of the North Tea Lake Mylonite Zone: an extensional shear zone in the Central Gneiss Belt, Grenville Province, Ontario." Canadian Journal of Earth Sciences 52, no. 11 (2015): 1027–44. http://dx.doi.org/10.1139/cjes-2015-0009.

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The North Tea Lake Mylonite Zone is a late extensional ductile fault that is concordant with and has reworked fabrics of the North Tea Lake Shear Zone, the frontal thrust shear zone of the upper amphibolite–granulite facies Kiosk domain within the interior of the Central Gneiss Belt. North Tea Lake Mylonite Zone fabric is an anomalously fine-grained mylonite compared to Central Gneiss Belt gneisses, and consists of three microstructural domains that display progressive recrystallization and grain size refinement of the protolith granitoid. On the basis of petrography and electron backscatter d

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23

Chadwick, B., and C. R. L. Friend. "The high-grade gneisses in the south-west of Dove Bugt: an old gneiss complex in a deep part of the Caledonides of North-East Greenland." Rapport Grønlands Geologiske Undersøgelse 152 (January 1, 1991): 103–11. http://dx.doi.org/10.34194/rapggu.v152.8163.

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The complex range of orthogneisses has been subdivided on the basis of field characteristics into an old polyphase group, grey phlebitic gneisses, younger varieties of pink granitic gneisses that occur principally as extensive sheets, mixed orthogneisses with schlieric facies and undifferentiated gneisses with dioritic facies. Mafic sheets, now amphibolites, were emplaced at various stages in the evolution of the gneisses. Enclaves and sheets of supracrustal rocks include paragneisses, graphitic schists, marble, amphibolite and stratiform gabbroic complexes with anorthosite. Nappes with curvil

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24

RÉGNIER, JEAN-LUC, JOCHEN E. MEZGER, and CEES W. PASSCHIER. "Metamorphism of Precambrian–Palaeozoic schists of the Menderes core series and contact relationships with Proterozoic orthogneisses of the western Çine Massif, Anatolide belt, western Turkey." Geological Magazine 144, no. 1 (2006): 67–104. http://dx.doi.org/10.1017/s0016756806002640.

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The tectonic setting of the southern Menderes Massif, part of the western Anatolide belt in western Turkey, is characterized by the exhumation of deeper crustal levels onto the upper crust during the Eocene. The lowermost tectonic units of the Menderes Massif are exposed in the Çine Massif, where Proterozoic basement orthogneisses of the Çine nappe are in tectonic contact with Palaeozoic metasedimentary rocks of the Selimiye nappe. In the southern Çine Massif, orthogneiss and metasedimentary rocks are separated by the southerly dipping Selimiye shear zone, preserving top-to-the-S shearing unde

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25

CHATTOPADHYAY, A., L. KHASDEO, R. E. HOLDSWORTH, and S. A. F. SMITH. "Fault reactivation and pseudotachylite generation in the semi-brittle and brittle regimes: examples from the Gavilgarh–Tan Shear Zone, central India." Geological Magazine 145, no. 6 (2008): 766–77. http://dx.doi.org/10.1017/s0016756808005074.

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AbstractIn the sheared and foliated granitoids of the Proterozoic Gavilgarh–Tan Shear Zone (GTSZ) in central India, two types of pseudotachylite (Pt-M and Pt-C) are recognized. Pt-M layers are interbanded with mylonite and ultramylonite, show strong internal plastic deformation and buckle folding concurrent with the host rocks, and appear to have formed within the greenschist facies (300–400 °C) in the brittle–plastic transitional (semi-brittle) regime. Pt-C layers show sharp contacts with the host rock, exhibit abundant coeval cataclasis, preserve no evidence of subsequent plastic deformation

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26

Schwerdtner, W. M. "Interplay between folding and ductile shearing in the Proterozoic crust of the Muskoka – Parry Sound region, central Ontario." Canadian Journal of Earth Sciences 24, no. 8 (1987): 1507–25. http://dx.doi.org/10.1139/e87-148.

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Grenville gneiss of the central Georgian Bay region was subjected to ductile deformation that produced narrow mylonite zones as well as three sets of superimposed folds differing greatly in structural signature, size, and orientation. Some mylonite zones are concordant to gneissosity and are repeatedly folded, others cut gneissosity and postdate the folding. Gneissosity was generated as a regionally subhorizontal feature, either by crustal thinning or, like the early mylonite zones, by low-angle reverse shearing. An attempt is made to account for the initially subhorizontal gneissosity, the my

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27

Ralser, S., B. E. Hobbs, and A. Ord. "Experimental deformation of a quartz mylonite." Journal of Structural Geology 13, no. 7 (1991): 837–50. http://dx.doi.org/10.1016/0191-8141(91)90008-7.

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Buick, I. S. "Mylonite fabric development on Naxos, Greece." Journal of Structural Geology 13, no. 6 (1991): 643–55. http://dx.doi.org/10.1016/0191-8141(91)90027-g.

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Baird, Graham B. "Late Ottawan orogenic collapse of the Adirondacks in the Grenville province of New York State (USA): Integrated petrologic, geochronologic, and structural analysis of the Diana Complex in the southern Carthage-Colton mylonite zone." Geosphere 16, no. 3 (2020): 844–74. http://dx.doi.org/10.1130/ges02155.1.

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Abstract Crustal-scale shear zones can be highly important but complicated orogenic structures, therefore they must be studied in detail along their entire length. The Carthage-Colton mylonite zone (CCMZ) is one such shear zone in the northwestern Adirondacks of northern New York State (USA), part of the Mesoproterozoic Grenville province. The southern CCMZ is contained within the Diana Complex, and geochemistry and U-Pb zircon geochronology demonstrate that the Diana Complex is expansive and collectively crystallized at 1164.3 ± 6.2 Ma. Major ductile structures within the CCMZ and Diana Compl

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30

Kimpe, Christian De, Chang Wang, Marc Laverdière, and Pierre LaSalle. "Variability within a saprolite deposit near Quebec City, Canada." Canadian Journal of Earth Sciences 22, no. 5 (1985): 781–85. http://dx.doi.org/10.1139/e85-083.

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Samples were collected in two trenches opened in a saprolite developed in a mylonite derived from biotite–garnet gneiss near Quebec City in order to investigate the spatial variability from the points of view of morphological, physical, mineralogical, and chemical properties. Phyllosilicate assemblages were: (a) kaolinite, (b) mica, (c) kaolinite + mica, and (d) mica + interstratified minerals (+ smectite). Grouping of the samples according to prominent colour in the matrix showed a relation between chroma and kaolinite content. Total chemical analyses were in good agreement with mineral assem

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31

Zhang, Xiaoli, Jinxian He, Zeqiang Ren, Taotao Zhou, Wenjie Cao, and Ben Xu. "Analysis of the Submicrostructural Deformation of Amphibole in a Ductile Shear Zone Based on the TEM Technique." Journal of Nanoscience and Nanotechnology 21, no. 1 (2021): 765–71. http://dx.doi.org/10.1166/jnn.2021.18466.

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Deformed amphibole in the plagioclase amphibolite mylonite of the Guandi Complex, Xishan, Beijing, is the research object in this study. The amphibole nanodeformation under the middle crust was analyzed using microstructural analysis and high-resolution transmission electron microscopy (TEM). Microscope observations show that the amphibolite deformations in the plagioclase amphibolite mylonite are δ and σ type porphyroclasts, and the porphyroclast tail is composed of new long-columnar crystals. Using transmission electron microscopy (TEM, and this acronyms would be defined only once), the auth

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32

Ashton, K. E., J. F. Lewry, L. M. Heaman, R. P. Hartlaub, M. R. Stauffer, and H. T. Tran. "The Pelican Thrust Zone: basal detachment between the Archean Sask Craton and Paleoproterozoic Flin Flon Glennie Complex, western Trans-Hudson Orogen." Canadian Journal of Earth Sciences 42, no. 4 (2005): 685–706. http://dx.doi.org/10.1139/e04-035.

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The Pelican Thrust Zone is a 37 km-wide recrystallized mylonite zone, along which Paleoproterozoic arc volcano-plutonic and derived sedimentary rocks of the Flin Flon Glennie Complex were thrust over an Archean package (Jan Lake Complex) consisting of ca. 3.1 Ga calc-alkaline orthogneisses, pelitic migmatites, and a ca. 2.45 Ga tholeiitic charnockitenorite intrusive suite. A regional northeast-plunging stretching lineation and a variety of kinematic indicators imply southwesterly transport, matching that of other coeval shallower crustal-level structures observed throughout the northern Fl

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33

Gibbons, Wes. "Basement–cover relationships around Aberdaron, Wales, U.K.: the fault-reactivated northwestern margin of the Welsh Basin." Geological Magazine 126, no. 4 (1989): 363–72. http://dx.doi.org/10.1017/s0016756800006567.

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AbstractOn mainland North Wales basement rocks emerge from beneath a Lower Ordovician cover along the west side of the Llyn peninsula. The basement contains steeply dipping mylonites (Llŷn shear zone) that separate plutonic and gneissic rocks (Sarn Complex) from a melange (Gwna mélange). The western edge of the Ordovician outcrop follows the basement shear zone, and new trenching data confirm that only a faulted relationship exists between cover and basement along this northwestern extremity of the Welsh Basin. Deformation along this margin has propagated into the Arenig cover to produce south

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Fawzy, Mona M., Mohamed S. Kamar, and Gehad M. Saleh. "Physical processing for polymetallic mineralization of Abu Rusheid mylonitic rocks, South Eastern Desert of Egypt." International Review of Applied Sciences and Engineering 12, no. 2 (2021): 134–46. http://dx.doi.org/10.1556/1848.2021.00200.

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AbstractIn this study, the mineralogical content of Abu Rusheid mylonite sample was investigated and revealed that the sample is essentially composed of quartz and feldspar (72.14% mass), muscovite (16.6% mass), and contains heavy economic polymetallic minerals of about 2.65% by mass. By studying the differences in the physical properties of this mineral content, a proposed flow sheet was set up to explain the successive physical upgrading steps for concentrating and separating the valuable minerals content and getting rid of the associated gangue minerals. Industrial, economic and strategic p

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Kidder, Steven, David J. Prior, James M. Scott, Hamid Soleymani, and Yilun Shao. "Highly localized upper mantle deformation during plate boundary initiation near the Alpine fault, New Zealand." Geology 49, no. 9 (2021): 1102–6. http://dx.doi.org/10.1130/g48532.1.

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Abstract Peridotite xenoliths entrained in magmas near the Alpine fault (New Zealand) provide the first direct evidence of deformation associated with the propagation of the Australian-Pacific plate boundary through the region at ca. 25–20 Ma. Two of 11 sampled xenolith localities contain fine-grained (40–150 μm) rocks, indicating that deformation in the upper mantle was focused in highly sheared zones. To constrain the nature and conditions of deformation, we combine a flow law with a model linking recrystallized fraction to strain. Temperatures calculated from this new approach (625–970 °C)

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Hippertt, J. F., and F. D. Hongn. "Deformation mechanisms in the mylonite/ultramylonite transition." Journal of Structural Geology 20, no. 11 (1998): 1435–48. http://dx.doi.org/10.1016/s0191-8141(98)00047-9.

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Wex, Sebastian, Neil S. Mancktelow, Friedrich Hawemann, Alfredo Camacho, and Giorgio Pennacchioni. "Inverted distribution of ductile deformation in the relatively “dry” middle crust across the Woodroffe Thrust, central Australia." Solid Earth 9, no. 4 (2018): 859–78. http://dx.doi.org/10.5194/se-9-859-2018.

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Abstract. Thrust fault systems typically distribute shear strain preferentially into the hanging wall rather than the footwall. The Woodroffe Thrust in the Musgrave Block of central Australia is a regional-scale example that does not fit this model. It developed due to intracontinental shortening during the Petermann Orogeny (ca. 560–520 Ma) and is interpreted to be at least 600 km long in its E–W strike direction, with an approximate top-to-north minimum displacement of 60–100 km. The associated mylonite zone is most broadly developed in the footwall. The immediate hanging wall was only margi

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Culshaw, N., T. Brown, P. H. Reynolds, and J. WF Ketchum. "Kanairiktok shear zone: the boundary between the Paleoproterozoic Makkovik Province and the Archean Nain Province, Labrador, Canada." Canadian Journal of Earth Sciences 37, no. 9 (2000): 1245–57. http://dx.doi.org/10.1139/e00-035.

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The polyphase Kanairiktok shear zone (KNSZ) separates gneissic rocks of the Archean Nain craton from their reworked equivalents in the Paleoproterozoic Kaipokok domain of the Makkovik Province. In its early stages, the KNSZ bounded the Kaipokok domain as it was thermally softened by 1895-1870 Ma Andean-type magmatism, accompanied by dextral oblique convergence and resultant penetrative deformation. The amphibolite-facies tectonite that developed in this stage was widely overprinted by greenschist-facies mylonite. Laserprobe and spectral 40Ar/39Ar ages of recrystallized and porphyroclastic musc

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Lynch, Gregory, and Peter S. Giles. "The Ainslie Detachment: a regional flat-lying extensional fault in the Carboniferous evaporitic Maritimes Basin of Nova Scotia, Canada." Canadian Journal of Earth Sciences 33, no. 2 (1996): 169–81. http://dx.doi.org/10.1139/e96-016.

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The Ainslie Detachment occurs near the base of the Carboniferous Windsor Group, forming a regional flat-lying extensional fault distributed across 10 000 km2. New mapping has delineated the structure through southwestern Cape Breton Island and into central Nova Scotia. Shearing is concentrated at the top of the basal Macumber limestone along its contact with overlying evaporites and younger allochthonous units. The highly contrasting rheologies of the formations created an anisotropic zone of weakness which acted as an upper crustal stress guide, stratigraphically controlling the trajectory of

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Passchier, C. W., R. F. Bekendam, J. D. Hoek, P. G. H. M. Dirks, and H. de Boorder. "Proterozoic geological evolution of the northern Vestfold Hills, Antarctica." Geological Magazine 128, no. 4 (1991): 307–18. http://dx.doi.org/10.1017/s0016756800017581.

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AbstractThe presence of polyphase shear zones transected by several suites of dolerite dykes in Archaean basement of the Vestfold Hills, East Antarctica, allows a detailed reconstruction of the local structural evolution. Archaean and early Proterozoic deformation at granulite facies conditions was followed by two phases of dolerite intrusion and mylonite generation in strike-slip zones at amphibolite facies conditions. A subsequent middle Proterozoic phase of brittle normal faulting led to the development of pseudotachylite, predating intrusion of the major swarm of dolerite dykes around 1250

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Davis, George H., Anne F. Gardulski, and Gordon S. Lister. "Shear zone origin of quartzite mylonite and mylonitic pegmatite in the Coyote Mountains metamorphic core complex, Arizona." Journal of Structural Geology 9, no. 3 (1987): 289–97. http://dx.doi.org/10.1016/0191-8141(87)90053-8.

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Kim, Sung-Wook, Eun-Kyeong Choi, Tae-Sun Yang, and Kyu-Hwan Lee. "Engineering Properties of Mylonite in the Youngju Area." Journal of the Korean Geotechnical Society 27, no. 10 (2011): 35–43. http://dx.doi.org/10.7843/kgs.2011.27.10.035.

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Casey, Martin, and Danielle Williams. "Micromechanical control of rheological anisotropy in quartz mylonite." Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy 25, no. 2 (2000): 127–32. http://dx.doi.org/10.1016/s1464-1895(00)00021-1.

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Burlini, L., and K. Kunze. "Fabric and seismic properties of carrara marble mylonite." Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy 25, no. 2 (2000): 133–39. http://dx.doi.org/10.1016/s1464-1895(00)00022-3.

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Trimby, Patrick W., David J. Prior, and John Wheeler. "Grain boundary hierarchy development in a quartz mylonite." Journal of Structural Geology 20, no. 7 (1998): 917–35. http://dx.doi.org/10.1016/s0191-8141(98)00026-1.

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Hanmer, Simon. "Initiation of cataclastic flow in a mylonite zone." Journal of Structural Geology 11, no. 6 (1989): 751–62. http://dx.doi.org/10.1016/0191-8141(89)90009-6.

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Healy, David. "Dehydration-induced brittle vein in a serpentinite mylonite." Journal of Structural Geology 33, no. 5 (2011): 757. http://dx.doi.org/10.1016/j.jsg.2009.05.004.

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OTOH, SHIGERU. "Calc-mylonite in the Ashidachi area, Okayama Prefecture." Journal of the Geological Society of Japan 92, no. 9 (1986): 691–94. http://dx.doi.org/10.5575/geosoc.92.691.

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Munro, M. "Mylonite zones in the Insch ‘Younger Basic’ Mass." Scottish Journal of Geology 22, no. 1 (1986): 132–36. http://dx.doi.org/10.1144/sjg22010132.

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Zagorevski, A., and V. McNicoll. "Evidence for seamount accretion to a peri-Laurentian arc during closure of Iapetus 1This article is one of a series of papers published in CJES Special Issue: In honour of Ward Neale on the theme of Appalachian and Grenvillian geology.2 Geological Survey of Canada Contribution 20100465." Canadian Journal of Earth Sciences 49, no. 1 (2012): 147–65. http://dx.doi.org/10.1139/e11-016.

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The Red Indian Line is the fundamental Iapetus suture zone in the Newfoundland Appalchians along which the main tract of the Iapetus Ocean was consumed. Despite being the site of the closure of a wide ocean, few vestiges of the Iapetus plate have been accreted along Red Indian Line. Ordovician rocks in the Notre Dame Bay area preserve the only evidence for accretion of a seamount in Newfoundland. The seamount is characterized by alkali basalt and hypabyssal rocks that are juxtaposed with Darriwilian peri-Laurentian volcanic arc rocks (466 ± 4 and 467 ± 4 Ma) along a major mylonite zone. The my

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