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Walls Boundary Fault
04275
138
Shetland - Northmavine
The eastern wall of the Walls Boundary Fault, seen in the middle distance at the end of the Back Sand beach, with folded metamorphic rocks in the cliff on the right.
The fault is a northern extension of the Great Glen shear fault, and is the best example in Britain of this type of feature. The rocks to the west of the fault have moved 100km south-west relative to those to the east of the fault. The hard granite on the eastern side is more resistant to erosion than the schists on the western side.
20 July 2013
Folded metamorphic rocks
04274
138
Shetland - Northmavine
Folded metamorphic schist rocks to the west of the Walls Boundary Fault, Northmavine, Shetland
20 July 2013
Walls Boundary Fault
04273
138
Shetland - Northmavine
The eastern wall of the Walls Boundary Fault. The fault is a northern extension of the Great Glen shear fault, and is the best example in Britain of this type of feature. The rocks to the west of the fault have moved 100km south-west relative to those to the east of the fault. The hard granite on the eastern side is more resistant to erosion than the schists on the western side.
20 July 2013
Walls Boundary Fault
04272
138
Shetland - Northmavine
The eastern wall of the Walls Boundary Fault, which may look like red granite but has a surface layer of fault gouge, a fine-grained rock ground down from the granite and schist by the fault movement. The fault is a northern extension of the Great Glen shear fault, and is the best example in Britain of this type of feature. The rocks to the west of the fault have moved 100km south-west relative to those to the east of the fault. The hard granite on the eastern side is more resistant to erosion than the schists on the western side.
20 July 2013
Walls Boundary Fault
04271
138
Shetland - Northmavine
The eastern wall of the Walls Boundary Fault, which may look like red granite but has a face of fault gouge, a fine-grained rock ground down from the granite and schist by the fault movement. The fault is a northern extension of the Great Glen shear fault, and is the best example in Britain of this type of feature. The rocks to the west of the fault have moved 100km south-west relative to those to the east of the fault. The hard granite on the eastern side is more resistant to erosion than the schists on the western side.
20 July 2013
The Walls Boundary Fault
04270
138
Shetland - Northmavine
The Walls Boundary Fault and Back Sands, Back of Ollaberry, Northmavine, Shetland. The fault is a northern extension of the Great Glen shear fault, and is the best example in Britain of this type of feature. The rocks to the west of the fault have moved 100km south-west relative to those to the east of the fault. The hard granite on the eastern side is more resistant to erosion than the schists on the western side.
20 July 2013
Bog asphodel, Shetland
04269
138
Shetland - Northmavine
Bog asphodel (Narthecium ossifragum), Back of Ollaberry, Northmavine, Shetland
20 July 2013
Common cotton grass, Shetland
04268
138
Shetland - Northmavine
Common cotton grass (Eriophorum angustifolium), Back of Ollaberry, Northmavine, Shetland. Cotton grass is really a sedge, not a grass, and is not related to cotton either!
20 July 2013
Thrift, Shetland
04267
138
Shetland - Northmavine
Thrift or Sea Pink (Armeria maritima) is found on coastal rocky cliffs, particularly in Scotland. It flowers from April to July, with globular heads of pink flowers. This photo was taken at Back of Ollaberry, Northmavine, Shetland.
20 July 2013
Sullom Voe oil terminal
04260
138
Shetland - Northmavine
Sullom Voe and the oil terminal looking across the Bay of Ollaberry, East Ness, Gluss Voe and Gluss Isle from above Ollaberry, Northmavine, Shetland.
