Ingleborough model information

Ingleborough

This model is a small section of an area of North Yorkshire modelled at 1:250,000 scale that covers 18 km2.

The model was built by BGS in 2010 using GSI3D and is calculated using a DEM with a 5 m grid spacing, it extends to about 100 m OD and is best viewed using a vertical exaggeration of between x3 and x5.

The model was constructed as part of a 3D models for teaching project as an idealised and generalised view of a classic geological location.

Superficial geology

The model contains three areas of Worked Ground, one in the Great Scar Limestone Group in the north and two in the Ingleton Group in the main valley.

The model contains three superficial units; alluvium from the rivers Doe, Kingsdale and Ribble, peat on the flanks of Ingleborough and till in the southwest and northeast.

The till has been modelled in areas of drumlin development to accentuate the landforms. Till is present elsewhere in the area but is not displayed in the model. The till in this region was laid down by the Devensian ice sheet which covered the whole region.

Bedrock geology

The bedrock geology comprises several distinct layers. The youngest late Carboniferous deposits of the Pennine Lower Coal Measures Formation comprise interbedded sandstones, siltstones and mudstones with several coal seams.The early Carboniferous limestones of the Great Scar Limestone and Yoredale groups contain classic karst features such as Gaping Gill. The limestone sequence is up to 500 m thick and dips to the northeast at about 5 degrees. The Craven Group, mid - to early - Carboniferous age comprises deeper water mudstones, limestones and sandstones.

In the south west, the Dent Formation, of Ordovician age and comprised of shallow marine sediments, limestone and pyroclastic rocks is encountered south of the North Craven Fault. Most of the area is unconformably underlain by the Ordovician Ingleton Group of sandstones, siltstones and conglomerates which is over 300 m thick.

Reference

DigMap250, (2005), SD, 1:250,000, version 4.11