Geological structures exposed - for iPod/iPhone
Overview of the Orogenic Belt
The three main components of the Orogenic Belt; Lewisian gneisses, Torridonian sandstone and sediments laid down from Cambrian times.
A history of movement
Evidence that the Moine Thrust is the result of frictional sliding.
Ductility of the Structures
The ductility of structures of rocks from the Dalradian supergroup.
Kinematic indicators
Evidence of indicators which suggest the direction of movement within slices of rock.
Using dikes as kinematic indicators
A dike that is deflected 45 degrees when entering a sheer zone provides a valuable kinematic indicator.
Shear Zone movement
An assymetric porphyroblast reveals a sense of movement within Myelenite gneissic banding.
Locating synforms
Asymmetric fold pairs and ductile structures in the inner zone at Scotlands Kilmore Bay.
Deformation history
Geologist John Whalley explains how in structural chronology downwards facing folds will cause the rock structure to start younging.
460 million years ago
The evidence for an Arc-continent collision around 460 million years ago in the Scottish Highlands.
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