OR/14/058 Modelled surfaces/volumes
The sedimentary sequence consists of 9 geological units:
| 'Units' modelled | Offshore' 'equivalents | ||
| LOCR-SSML | Lower Cretaceous | CRKN-ARG | Cromer Knoll Group |
| JURU-SDSM | Upper Jurassic | HMBG-ARSL | Humber Group |
| JURM-MDSL | Middle Jurassic | FLDN-SMC & JURM-ARSM | Fladen Group – Middle Jurassic Rocks |
| LI-MSLS | Lias,Lower Jurassic | LI-SDAR | Lias Group |
| NRS-SDBC | Permian-Triassic | PRMT-SDAR | Permian and Triassic Rocks (undifferentiated) |
| UDEV-SCON | Upper Devonian | UORS-SDST | Upper Old Red Sandstone |
| MDEV-SCON | Middle Devonian | MDEV-COSD | Middle Devonian (undifferentiated) |
| LORS-CSSM | Lower Devonian | ||
| ORS-CSSM | undifferentiated Devonian,slices within fault zones |
Table 1: Geological units modelled
The onshore geology is based on the BGS 625 000 geological map. The offshore geology is based on the BGS 250 000 map. All units are labelled with BGS LEX-RCS codes, see Figures 2 and 3.
Geological units modelled are as used in the GB_3D sections on which the model is based. Offshore units were merged into their onshore equivalents, as shown in Table 1.
Figure 2: Onshore geology based on the BGS 1:625 000 onshore geological map
Figure 3: Offshore geology based on the BGS 1:250 000 offshore geological map