Thrust and fold geometry of the Lewisian and Torridonian in Upper Glen Oykel

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Thrust and fold geometry of the Lewisian and Torridonian in Upper Glen Oykel

July 27 @ 10:0016:00

This geological outing in the Assynt Window will view the thrust and fold geometry of the Lewisian and Torridonian in Upper Glen Oykel. The Loch Ailsh syenite intrusions and its field relationships with the Cambrian carbonates and quartzites will be examined. Some questions that we will try and answer are:

How can we explain the distribution of the Torridonian outcrops?

How does the Lewisian overlie the Torridonian?

What are the relative ages of the thrusts?

How far did they translate and in what direction?

What is the relative age of the Syenites and felsic sills intrusions?

The trip will be guided by Keith Milne, who mapped this area in detail for his B.Sc thesis in 1976. If the weather conditions are good, then it is planned to walk about 5km up the valley. The first part of the walk is along a good track. The second part of the track is not too steep, but occasionally rough. Binoculars are recommended.

The Glen cuts through about 500m of topography allows the 3D geometry of the thrust surfaces to be interpreted. This can be displayed on the terrain together with the geology and dips of the beds, as in the following link:  Glen Oykell Geology

Places are limited.  The cost is £9 discounted to £5 for friends of the geopark and ambassadors. Please book via pete@nwhgeopark.com

Details

Date:
July 27
Time:
10:00 – 16:00
Event Category:

Organizer

NW Highlands Geopark