Скачать или смотреть Extreme deformation along a fault plane - Ben Arnabol Mylonite

The Moine Thrust Zone is a complex system of sub-parallel branching thrusts, each of which might accommodate many (tens-to hundreds of) kilometers of displacement. Between these are complex imbricated thrust duplexes such as those seen around Foinaven and Arkle - these don't accommodate as much deformation but are how the rock locally accommodates the deformation associated with the major thrusts. They also tend to be brittle. The major thrusts, called Sole thrusts form initially in the lower crust and see a lot of shear heating so they tend to show ductile deformation features.
The Ben Arnabol Thrust is the first place where extreme ductile shear was first described and the term 'Mylonite" was coined to describe the very fine-grained, stretched out fabric typical of these rocks.
It is the origin of the geology joke:
How fast does a fault move?
A mylonite.

Not many geologists are comedians.