59 photos in 35 sub-albums
They occur in the opening zones, of spreading of the fault’s lips. We talk about crystallization under shelters when they are contemporaneous with sliding on the fault.
They are synchronous or posterior to the fault’s movement.
They are of varied mineralogical composition: calcite, quartz, serpentines...[ /lang]
23 photos in 12 sub-albums
They occur in the approaching zones of the fault’s lips. The approaching is made by dissolution under stress. They are contemporaneous with the displacement on the fault.
They have the mineralogical composition of the substrate they dissolve.
We call them stylolitic structures (sometimes strilolites).
103 photos in 61 sub-albums
They occur in sliding areas with friction of the fault’s lips. They are contemporaneous with the sliding on the fault.
They are the result of cataclastic phenomena (crushing, attrition, smoothing, polishing..)
They have the mineralogical composition of the substrate they degrade.
They are often associated with other structures (crystallization, dissolution).
59 photos in 49 sub-albums
Various structures recorded on the pebble’s surface:
Crystallization tectoglyphs, Dissolution tectoglyphs, Mechanical tectoglyphs, Pressure pits: dissolution.The pebbles are sometimes sheared or flexed (structures associated with these deformations).
21 photos in 11 sub-albums
These tectoglyphs reflect complex tectonic movements corresponding either to different tectonic events or to the evolution of the deformation (tilting, for example) during an event.
In any case a relative chronology can be established.
1 photo