OR/15/035 Modelled surfaces/volumes

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.