Research Article

Fold-to-Fault Progression of a Major Thrust Zone Revealed in Horses of the North Mountain Fault Zone, Virginia and West Virginia, USA

Figure 14

Conceptual model of detachment and folds showing progression of overturned folds and zones of shearing. (a) Initial compression develops ramps in the stratigraphic section. (b) Folds develop as shortening continues. (c) As folding continues, shear zones and faults develop along and oblique to the axial plane of the folds.
294093.fig.0014a
(a)
294093.fig.0014b
(b)
294093.fig.0014c
(c)