mylonite

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my·lo·nite

 (mī′lə-nīt′)
n.
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.]

mylonite

(ˈmaɪləˌnaɪt; ˈmɪlə-)
n
(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 ?
1994), is within both the massive marble and the graphitic schist and quartzite members, the latter described as either carbonaceous, finegrained mudstones or mylonites.
The perimeter of Tirek North is on the eastern edge of the In Ouzzal mole, which consists of a band of mylonites between 300 and 3,000 metres thick corresponding to a major tectonic deformation rift.
One additional target of merit, and also generated from earlier work, is an open-ended I P anomaly marking the western edge of the mylonites.
These mylonites consist of garnet-bearing quartzofeldspathic gneisses and garnet-bearing calcsilicate gneisses.
Because of ductile shearing gneisses, augen mylonites, mylonites and ultramylonites were produced in the DPDZ, while tectonic breccias and pseudotachyllite were formed by later brittle deformation.
North Tirek- The Tirek North licence is located on the eastern edge of the In Ouzzal mole, which consists of a band of mylonites between 300 and 3,000 metres thick corresponding to a major tectonic deformation rift (called the In Ouzzal Fault Zone).
Faults in this region are expressed as early shear zones that are characterized by mylonites and by later more shallowly seated ductile-brittle and brittle fault zones.