One of the mysteries of the English language finally explained.
A polished and striated rock surface that results from friction along a fault or bedding plane.
- ‘There is limited evidence from slickensides for dip-slip movement along this fault.’
- ‘Brittle deformation is evident from a number of fault planes showing quartz slickensides consistently dipping at c.40 deg to the southeast.’
- ‘Main normal-throw components are documented both by steps on the fault slickensides and by downthrown offsets of basaltic layers.’
- ‘Where they are exposed, the surfaces of these faults are highly polished with slickenside lineations and the faults also have a mean dip of 45 degrees.’
- ‘Some longitudinal faults display a second generation of slickensides due to a dextral reactivation that locally modifies the geometry of the fault network.’
Mid 18th century: from a dialect variant of the adjective slick + side.
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