shear zone

shear zone

[′shir ‚zōn]
(geology)
A tabular area of rock that has been crushed and brecciated by many parallel fractures resulting from shear strain; often becomes a channel for underground solutions and the seat of ore deposition.
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References in periodicals archive ?
Further to our Phase 1 drill results announced on April 27th 2017, the MEM shear zone has now been traced for a distance of 825m and to depths of 150m and is open along strike and to depth.
The mineralization was contained in a silicified shear zone occurring in the host granite, associated with the shear was primary quartz veins.
This article seeks to study two shear zones named as Izeh shear zone and Dezful shear zone.
EP 53111 was the subject of a competitive permit allocation process (NAA) by New Zealand Petroleum and Minerals initiated in late 2010 and encompasses the Rise and Shine Shear Zone and the Cromwell Lode within the historic Bendigo goldfield.
The hardness of shear zone of micro columns was evaluated by Nano Indenter.
4km long mineralized shear zone has been identified at The Piren property.
The drilling is being carried out in the Bai Dat sector of the Dak Sa shear zone, and so far has tested a 260 m strike-length of the shear, in the vicinity of artisanal workings.
As a result, some water moves in one direction while the rest moves in the opposite direction, establishing a shear zone.
Major NNW - striking shears are located to the east and west with secondary mineralised splays occurring within the licence area , including the Mt Rober ts Shear Zone.
The deformation velocity field derived from GPS measurements before and after the earthquake indicates that earthquakes were associated with a shear zone trending NW/SE underlying the fold systems that near Pishin and Mach trend approximately eastward.
The mineralization is associated with a shear zone.