OR/14/058 Modelled surfaces/volumes

Arkley, S L B. 2014. Model metadata report for the Great Glen — Moray Firth GSI3D Faulted Bedrock Model. British Geological Survey Internal Report, OR/14/058.

The sedimentary sequence consists of 9 geological units:

Table 1 Geological units modelled

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

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.