The Open University

Geological structures exposed
Duration: 00:00:36
Date: 13.04.2010

Geological structures exposed
A short introduction to this album.

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Overview of the Orogenic Belt
Duration: 00:04:55
Date: 23.06.2009

Overview of the Orogenic Belt
The three main components of the Orogenic Belt; Lewisian gneisses, Torridonian sandstone and sediments laid down from Cambrian times.

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A history of movement
Duration: 00:04:21
Date: 23.06.2009

A history of movement
Evidence that the Moine Thrust is the result of frictional sliding.

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Ductility of the Structures
Duration: 00:01:18
Date: 23.06.2009

Ductility of the Structures
The ductility of structures of rocks from the Dalradian supergroup.

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Kinematic indicators
Duration: 00:04:54
Date: 23.06.2009

Kinematic indicators
Evidence of indicators which suggest the direction of movement within slices of rock.

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Using dikes as kinematic indicators
Duration: 00:07:16
Date: 23.06.2009

Using dikes as kinematic indicators
A dike that is deflected 45 degrees when entering a sheer zone provides a valuable kinematic indicator.

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Shear Zone movement
Duration: 00:02:55
Date: 23.06.2009

Shear Zone movement
An assymetric porphyroblast reveals a sense of movement within Myelenite gneissic banding.

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Locating synforms
Duration: 00:04:07
Date: 23.06.2009

Locating synforms
Asymmetric fold pairs and ductile structures in the inner zone at Scotlands Kilmore Bay.

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Cleavage vergence test
Duration: 00:03:05
Date: 23.06.2009

Cleavage vergence test
Evidence for crossing the axis of the synfold.

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Structural chronology
Duration: 00:04:28
Date: 23.06.2009

Structural chronology
A closer look at folds and deformation.

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Deformation history
Duration: 00:03:06
Date: 23.06.2009

Deformation history
Geologist John Whalley explains how in structural chronology downwards facing folds will cause the rock structure to start younging.

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460 million years ago
Duration: 00:03:19
Date: 23.06.2009

460 million years ago
The evidence for an Arc-continent collision around 460 million years ago in the Scottish Highlands.

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