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Mylonite information


An amphibolitic mylonite showing a number of (rotated) porphyroclasts: a clear red garnet left in the picture while smaller white feldspar porphyroclasts can be found all over. Location: the tectonic contact between the (autochthonous) Western Gneiss Region and rocks of the (allochthonous) Blåhø nappe on Otrøy, Caledonides, Central Norway.
A mylonite (through a petrographic microscope) showing rotated so-called δ-clasts. The clasts show that the shear was dextral in this particular cut. Strona-Cenery zone, Southern Alps, Italy.
Mylonite, Owl Mountains, Poland

Mylonite is a fine-grained, compact metamorphic rock produced by dynamic recrystallization of the constituent minerals resulting in a reduction of the grain size of the rock. Mylonites can have many different mineralogical compositions; it is a classification based on the textural appearance of the rock.

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Mylonite

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Mylonite is a fine-grained, compact metamorphic rock produced by dynamic recrystallization of the constituent minerals resulting in a reduction of the...

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Metamorphic rock

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called mylonite. Certain kinds of rock, such as those rich in quartz, carbonate minerals, or olivine, are particularly prone to form mylonites, while...

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Burlington mylonite zone

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The Burlington mylonite zone is a 1.5 kilometer thick mylonite zone, resulting from the dynamic recrystallization and grain size reduction of rocks, running...

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Thin section

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the microstructure of fine-grained carbonates such as the Lochseitenkalk mylonite in which the matrix grains are less than 5 μm in size. This method is also...

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Metamorphism

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called mylonite. Certain kinds of rock, such as those rich in quartz, carbonate minerals, or olivine, are particularly prone to form mylonites, while...

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Porphyroclast

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A mylonite showing a number of (rotated) porphyroclasts: a clear red garnet left in the picture while smaller white feldspar porphyroclasts can be found...

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Potomac River

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Sykesville Formation on the steep, west-dipping Plummers Island fault and mylonite zones (Schoenborn, 2001) within an existing Plummers Island shear zone...

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Pseudotachylyte

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often closely associated with other extremely fine grained rocks (e.g. mylonite and cataclasite), and is extremely prone to alteration that often renders...

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Oldest dated rocks

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the oldest rock may be represented by only one streak of minerals in a mylonite, representing a layer of sediment or an old dike. This may be difficult...

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Terrane

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orogeny in Fennoscandia: Back-thrusting and extensional shearing along the 'Mylonite Zone'". Precambrian Research. 189 (3–4): 368–88. Bibcode:2011PreR..189...

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Amphibolite

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ductile deformation field. Gneissic texture may occur nearby, if not then mylonite zones, foliations and ductile behaviour, including stretching lineations...

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List of rock types

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metamorphosed limestone Migmatite – Mixture of metamorphic rock and igneous rock Mylonite – Metamorphic rock – A metamorphic rock formed by shearing Metapelite –...

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Coles Hill uranium deposit

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crystallized from high-temperature hydrothermal water in the Leatherwood granite mylonite. The site was discovered during uranium prospecting in the 1970s, inspired...

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Strike and dip

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Boudinage Competence Kinematic analysis 3D fold evolution Paleostress inversion Paleostress Section restoration Shear zone Mylonite Pure shear Shear Category...

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Attappadi

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foliation S2 attributed to the regional NE-SW trending Bhavani shear. Mylonite development, biotitization, chlorination, and micro granulation are found...

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Fault breccia

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the rock where a tunnel can collapse more easily. Breccia Cataclasite Mylonite Fault (geology) Twiss, R.J. & Moores, E.M., 2000 (6th edition): Structural...

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Saint Peter and Saint Paul Archipelago

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serpentinized abyssal mantle peridotite and kaersutite-bearing ultramafic mylonite atop the world's highest and yet only second largest megamullion (after...

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Mica fish

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quartzitic mylonites. They characteristically lie with their longest dimension at a small angle to the mylonitic foliation. Mica fish in mylonites v t e...

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Sveconorwegian orogeny

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with the Eastern Segment, terminates along a shear zone containing mylonite. The Mylonite Zone, as this shear zone is known, runs as an arc from the Oslo...

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Shear zone

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abrasive wear on brittle, seismogenic faults. foliated mylonites (phyllonites). striped gneiss. Mylonites start to occur with the onset of semibrittle behaviour...

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Bogoso

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SENIOR HIGH SCH. UNIVERSITY OF WORLDWIDE MEDIA COLLEGE Gold Diamonds Basalt Mylonite Shale "Bogoso". www.tiptopglobe.com. Archived from the original on 4 March...

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Virginia Toy

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Retrieved 26 April 2020. Toy, Virginia (2008). Rheology of the Alpine Fault Mylonite Zone: deformation processes at and below the base of the seismogenic zone...

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Iona

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Britain and indeed Europe. Closely associated with these gneisses are mylonite and meta-anorthosite and melagabbro. Along the eastern coast facing Mull...

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Ross Lake Fault

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the Ross Lake fault itself, is a vertical zone of horizontally-lineated mylonite that separates upper-amphibolite-facies rocks of the Cascades crystalline...

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Bloody Bluff fault

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Burlington mylonite zone to the north. Rocks along the fault have experienced both ductile and brittle deformation. There is relatively little mylonite in the...

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Tectonite

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planar fabric elements and may indicate a plane strain deformation. Many mylonites are L-S tectonites consistent with a simple shear deformation. L-Tectonites...

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