OR/14/035 Model limitations: Difference between revisions

From MediaWiki
Jump to navigation Jump to search
Dbk (talk | contribs)
Created page with "__notoc__ {{OR/14/035}}The model covered the superficial deposits overlying the Sherwood Sandstone and the underlying bedrock was not modelled in detail. Instead a ‘base mod..."
 
Dbk (talk | contribs)
No edit summary
 
Line 1: Line 1:
__notoc__
__notoc__
{{OR/14/035}}The model covered the superficial deposits overlying the Sherwood Sandstone and the underlying bedrock was not modelled in detail. Instead a ‘base model’ was constructed with an arbitrary cut-off point at -35m. The area of bedrock shown in the model is coloured grey so as not to be confused with other modelled units.
{{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.


[[category: OR/14/035 Model metadata report for the EA Tees 3d Model | 07]]
 
[[category: OR/14/035 Model metadata report for the EA Tees 3d Model | 08]]

Latest revision as of 11:34, 15 June 2015

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.