A valley cut through a ridge by a river which no longer flows through the valley.
- ‘Both major and minor faults influence the directions of river channels, and even minor faults can have wind gaps, low points on the scarp where a stream once crossed the fault but has now been diverted because of the changed topography.’
- ‘To the south of each of the basins 1-3, wind gaps are preserved in the footwall of the fault.’
- ‘Dated marine and terrestrial sediments allow estimation of the timing of wind gap formation and rates of lateral propagation of the South Alkyonides Fault.’
- ‘The former courses of the south-directed drainage became wind gaps in the immediate footwall of the South Alkyonides Fault.’
We take a look at several popular, though confusing, punctuation marks.