Clyde superficial deposits and bedrock models released to the ASK Network 2014 : a guide for users Version 3 Geology and Regional Geophysics Programme Open Report OR/14/013 BRITISH GEOLOGICAL SURVEY GEOLOGY AND REGIONAL GEOPHYSICS PROGRAMME OPEN REPORT OR/14/013 Clyde superficial deposits and bedrock models released to the ASK Network 2014 : a guide for users Version 3 A A Monaghan, S L B Arkley, K Whitbread, M McCormac Contributor D J Lawrence The National Grid and other Ordnance Survey data © Crown Copyright and database rights 2014. Ordnance Survey Licence No. 100021290. Bibliographical reference MONAGHAN A A, ARKLEY S L B, WHITBREAD K, MCCORMAC M. 2014.Clyde superficial deposits and bedrock models released to the ASK Network 2014 : a guide for users Version 3. 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........................................................................................................................ 3 Summary ........................................................................................................................................ 3 1 Modelled volume, purpose and scale .................................................................................... 4 1.1 Superficial deposits......................................................................................................... 4 1.2 Bedrock ........................................................................................................................... 5 1.3 Datasets provided to users .............................................................................................. 6 2 Modelled surfaces/volumes .................................................................................................... 7 2.1 Superficial deposits......................................................................................................... 7 2.2 Baillieston Till Formation (BNTI) ................................................................................. 8 2.3 Broomhill Clay Formation (BRLL) ................................................................................ 8 2.4 Cadder Sand and Gravel Formation (CADR) ................................................................. 8 2.5 Wilderness Till Formation (WITI) ................................................................................. 9 2.6 Broomhouse Sand and Gravel Formation (BHSE)......................................................... 9 2.7 Clyde Clay Formation .................................................................................................. 10 2.8 Clydebank Clay Formation ........................................................................................... 12 2.9 Clyde Valley Formation ............................................................................................... 13 2.10 Lacustrine Deposits (LDE) ........................................................................................ 13 2.11 Peat ............................................................................................................................ 13 2.12 Head .......................................................................................................................... 13 2.13 Made Ground (MGR) ................................................................................................ 13 2.14 Lenses ........................................................................................................................ 14 2.15 Bedrock ..................................................................................................................... 15 3 Modelled faults ..................................................................................................................... 17 4 Model datasets and workflow ............................................................................................. 18 4.1 Superficial deposits....................................................................................................... 18 4.2 Bedrock ......................................................................................................................... 19 5 Model assumptions, geological rules used .......................................................................... 20 5.1 Superficial deposits....................................................................................................... 20 5.2 Bedrock ......................................................................................................................... 21 6 Model limitations .................................................................................................................. 21 6.1 Superficial deposits....................................................................................................... 21 6.2 Bedrock ......................................................................................................................... 23 7 Model images ........................................................................................................................ 25 8 Model uncertainty ................................................................................................................ 28 9 Conclusions and potential future developments ................................................................ 30 i OR/14/013; Version 1 Last modified: 2014/03/02 14:52 References .................................................................................................................................... 31 FIGURES Figure 1 Superficial deposits model areas. ...................................................................................... 4 Figure 2 Image showing the extent of the Central Glasgow Bedrock Model and the extent of the lower resolution Clyde Catchment scale bedrock model (blue), provided to the ASK Network as a clipped 10 km buffer around the Central Glasgow bedrock model. ................... 5 Figure 3 Summary stratigraphy of the modelled Carboniferous strata in the Central Glasgow bedrock model area. Coal name codes: Glasgow Upper coal (GU), Glasgow Ell Coal (GE), Kiltongue Coal (KILC), Knightswood Gas Coal (KDG). The base of the Lower Limestone Formation (Hurlet Limestone) is also included in the Clyde Catchment scale bedrock model16 Figure 4 Overview of faults modelled in the Central Glasgow bedrock model, looking from above. ...................................................................................................................................... 17 Figure 5 Overview of superficial deposits model of Central Glasgow Superficial Deposits Model, looking NW, ten times vertical exaggeration. .......................................................................