| Thompson, J F. 2015. Model metadata report for HS2 Area 4. British Geological Survey Internal Report, OR/15/035.
|
Table 1 List of modelled units.
| Geological unit
|
Age
|
Model name
|
| Alluvium
|
Quaternary
|
ALV-XCZSV
|
| Head
|
Quaternary
|
HEAD-XCZSV
|
| Glaciofluvial deposits Mid Pleistocene
|
Mid Pleistocene
|
GFDMP-XSV
|
| Till
|
Mid Pleistocene
|
TILMP-DMTN
|
| White Limestone Formation
|
Mid Jurassic
|
WHL-LMST
|
| Rutland Formation
|
Mid Jurassic
|
RLD1-MDST
|
| Taynton Limestone Formation
|
Mid Jurassic
|
TY-LMOOL
|
| Wellingborough Limestone Member
|
Mid Jurassic
|
WBRO-LMST
|
| Sharp’s Hill Formation
|
Mid Jurassic
|
SHHB-ARSL
|
| Rutland Formation
|
Mid Jurassic
|
RLD-MDST
|
| Stamford Member
|
Mid Jurassic
|
STAM-SDSL
|
| Horsehay Sand Formation
|
Mid Jurassic
|
HYSA-SDST
|
| Northampton Sand Formation
|
Mid Jurassic
|
NS-SDLI
|
| Whitby Mudstone Formation
|
Early Jurassic
|
WHM-MDST
|
| Marlstone Rock Formation
|
Early Jurassic
|
MRB-FLIR
|
| Dyrham Formation
|
Early Jurassic
|
DYS-SIMD
|
| Charmouth Mudstone Formation
|
Early Jurassic
|
CHAM-MDST
|
| Rugby Limestone Member
|
Early Jurassic
|
RLS-MDLM
|
| Saltford Shale Member
|
Late Triassic to Early Jurassic
|
SASH-MDST
|
| Langport Member
|
Late Triassic
|
LPMB-LMST
|
| Penarth Group
|
Late Triassic
|
PNG-AROCLS
|
| Blue Anchor Formation
|
Late Triassic
|
BAN-MDST
|
| Branscombe Mudstone Formation
|
Late Triassic
|
BCMU-MDST
|
| Sidmouth Mudstone Formation
|
Early to Late Triassic
|
SIM-MDST
|
The Rutland Formation is divided into two units (RLD-MDST and RLD1-MDST) to account for the Wellingborough Limestone Member which occurs in the middle of the Rutland Formation.