Great Glen Fault Strike Slip Left Lateral Right Extension Rify Valley

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The Great Glen Fault (GGF) is composed of a 3km wide series of parallel strike slip faults.
Most of the deformation from these faults is seen underwater in lochs that parallel the fault. In fact, the locks of northern Scotland that parallel the fault zone are a direct result of the faulting; hence, the use of a white line to show the fault since a black line (standard for showing faults) would not show up against the black colored locks in this map.
In the past the fault was a left lateral strike slip, but in the present it is a right lateral strike slip.
There are about 3 earthquakes along the fault per century, these earthquakes are normally rated around 4 on the Richter scale.

Other Web Sights with geologic information about the Great Glen Fault

Plate T-23 Scottish Highlands	This sight has good black and white ariel photographs of the GGF and a basic description of how the topography relates to the geology
Scottish Geology - Great Glen Fault	Here there is a good description of on either side of the fault, and there are links to other Scottish geology pages