Also found in: Encyclopedia, Wikipedia.


A fine-grained laminated rock formed by the shifting of rock layers along faults.

[Greek mulōn, mill (from mulē, handmill; see melə- in Indo-European roots) + -ite.]


(ˈmaɪləˌnaɪt; ˈmɪlə-)
(Geological Science) a fine-grained metamorphic rock, often showing banding and micaceous fracture, formed by the crushing, grinding, or rolling of the original structure
[C19: from Greek mulōn mill]
References in periodicals archive ?
In easternmost Maine near the New Brunswick border, the Codyville fault separates Miramichi sedimentary rocks from ductilely sheared mylonite derived from Flume Ridge turbidites.
Due to thrusting of this anticline the southwestern limb of Muzaffarabad anticline is mostly crushed showing fault breccia, mylonite, gouge and slickenside of bed rocks.
Borrego Springs-Santa Rosa mylonite zone: a late Cretaceous west-directed thrust in southern California"Geology12, 8-11(1984)
Apart from this dislocations in this area there exist group of partial faults and mylonite zone (usually with clay filling), that considerably weakened rock massifs.
The southern limit of the Chidue Formation rocks is marked by a wide mylonite zone striking at 290 degrees and dipping 45 degrees to the southwest.
The project area includes the Roopena Fault and Kalinjala Mylonite structures, which offer potential sites for economic deposits sourced from Hiltaba granites to the north and in the eastern portion of the project area.
In the case of LF1 quartz mylonite, we have simulated different AMS responses based on quantitative texture analysis.
Of course rock is created from the bottom up, but the accepted explanation is an anomaly in which complete plates were forced up and over shallower ones using a layer of fine-grained mylonite limestone as a lubricant.
Six rock types can be distinguished, with the following proportions: granite (38%), mylonite (21%), quartzite (16%), metapelite (13%), quartz (10%) and augen gneiss (2%).
The Central Metasedimentary Belt Boundary Zone (CMBBZ) separates the CMB from the Central Gneiss Belt (CGB) to the west; its eastern border is defined by the Carthage-Colton mylonite zone and Labelle shear zone.