OR/14/035 Modelled volume, purpose and scale
| THORPE, S, BURKE, H, WHITBREAD, K. 2013. Model metadata report for the EA Tees 3d Model. British Geological Survey Internal Report, OR/14/035. |
The model area is 414km2 and covers the area along the Tees valley, from Middlesbrough in the north-east, at the mouth of the Tees, in a roughly south-west direction to Darlington and Dalton-on-Tees. Figure 1 shows the model extent, together with the cross-sections used to construct the model.
A set of five framework sections consisting of one north-east — south-west oriented section and four east-west sections were produced initially. As well as forming the core sections of the 3D model, these framework sections have been delivered separately to the client to provide an overview of the distribution and form of the main lithostratigraphic units in the study area. The section lines were selected to link to previously produced cross-sections of the Durham area to the north and to include sufficient high quality boreholes to constrain the subsurface geology.
A further seven north-south trending and seventeen east-west trending model sections were then constructed to create the cross-section network for the model. The exact lines of these sections were chosen through inspection of borehole data with the highest quality boreholes included. Borehole selection criteria include the borehole depth (especially whether the bore reaches rockhead) and the detail and quality of the description of the strata. A number of helper sections were also generated in order to check the geological interpretation and to represent small and/or complex deposits more accurately in the final model.
