Ma et al., "Effects of fault spacing on the deformation, failure process and released energy for the extensional echelon faults
: a numerical simulation," Progress in Geophysics, vol.
Geological mapping in the foothills of the Rychleby Mountains (between the Bila Voda, Javornik ve Slezsku, Vapenna, and Dolni Lipova villages) has shown the Sudetic Marginal Fault to be a zone of parallel en echelon faults
4 km in width.
The Muddy Creek Fault Zone is interpreted as consisting of a set of en echelon faults
rather than a single fault.