OR/14/035 Model limitations

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THORPE, S, BURKE, H, WHITBREAD, K. 2013. Model metadata report for the EA Tees 3d Model. British Geological Survey Internal Report, OR/14/035.
  • More borehole interpretations are needed to give the model more reliability.
  • The deep topography, particularly the valleys, has proved difficult to model. The thin units associated with these valley areas mean that more cross-sections are needed to help constrain the base of such units. Given the time constraints for this model, this was unachievable and as a result there are areas (most notably the alluvial channel fills, and thin clay outcrops) where the model under-represents the geology.
  • The separation of the Horden Till, Blackhall Till and the intervening Darlington Clay Formation are in some areas of the model, over-simplified. Not enough borehole data was used (given the time constraints on the modelling process) to allow a thorough investigation into the thicknesses of these units.
  • There are vagaries between the height distributions of both the Darlington Clay Formation and Tees Clay Formation. These could be further investigated with more borehole coding, targeted site investigations and subsequent further revision of the model.
  • The relationship between the Lake Deposits and Alluvium is poorly described and the large scale of the model means that this distinction could not be fully resolved in all areas of the model.