OR/16/004 Appendix 2 Geological unit construction
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| Barron, A J M. 2016. GSI3D model metadata report for HS2 Area 3 (Newton Purcell to Thorpe Mandeville). British Geological Survey Internal Report, OR/16/004. |
NB: all coverages simplified to 5 m tolerance from v323 onwards.
| Unit | GU created | Polys added. Major modifications |
| WMGR | 31/5/13 v144 | Drawn in rungs 2, 3, 8, 5, 13 v149, rung 12 v157, Centreline v199 |
| MGR | 31/5/13 v143 | 31/5-4/6/13 polys drawn in Rung1, Centreline v199, NWSE_4, EWrung_8, 4, 10 v156 |
| WGR | 4/6/13 new drawn at NWSE3, Rung11 v157 | |
| LSGR | 3/6/13 V148 | 3/6/13 extended at EWrung 6 W2900 v149 |
| ALV | 1/5/13 v57 | 1/5/13 all v57. 3/6/13 joined polys and extended under LSGR at EWrung 6 W2900 and EWrung 7 v149 |
| HEAD- XCZSV | 31/5/13 v139 | 31/5/13 poly added part under MGR in EWrung 8 at W5080 from bh data v141. |
| PEAT | 31/3/14 v266 | 31/3/14 v266 |
| TUFA | 31/5/13 v139 | 31/5/13 v139 |
| GFDMP1 | 6/6/13 v179 | 6/6/13 partly constructed outcrop coverage v181 |
| TILMP1 | 5/6/13 v160 | 6/6/13 edited with constructed lines v171 |
| GFDMP | 1/5/13 v57 | 4/4/14 V283 |
| TILMP | 1/5/13 v57 | 16/5/13 V80. 6/6/13 Widely extended beneath narrow ribbons of ALV or HEAD v182 |
| GFDMP0 | 5/6/13 V159 | 10/6/13 v193 |
| PET | 24/3/14 v255 | 24/3/14 v255 |
| KLB | 20/5/13 v94 | 20/5/13 v94. 22/5/13 v114 |
| CB | 20/5/13 v94 | 20/5/13 v94. 22/5/13 v114 |
| FMB- LSMD | 16/5/13 V81 | 16/5/13 V81. 22/5/13 modded in Biddlesden area to match MGS 10k v115 |
| BWC | 16/5/13 V83 | 16/5/13 V83. 22/5/13 modded in Biddlesden area to match MGS 10k v115. 3/3/14 subsumed into FMB v225 |
| BLAD | 20/5/13 v95 | 20/5/13 1 poly v95 |
| WHL- LMST | 16/5/13 V80 | 16/5/13 V80 + some BLAD v94. 22/5/13 incl most BLAD v116 |
| BWL | 16/5/13 V81 | 3/3/14 subsumed into WHL v228 |
| RLD1 | 16/5/13 V84 | 17/5/13 V85. GU subcrop modified to fit SP54SE/7 in EWrung 12; 12/6/15 added slit for F1 v360 |
| TY | 20/5/13 v91 | 20/5/13 v91, 22/5/13 v122; 12/6/15 added slit for F1, 7, 11, 12, v360 |
| WBRO | 17/5/13 V85 | 17/5/13 V85, 20/5/13 v106 |
| SHHB | 20/5/13 v94 | 20/5/13 v94, 30/5/13 v136; 12/6/15 added slit for F8 v360 |
| RLD | 20/5/13 v95 | 23/5/13 v125 |
| STAM | 17/5/13 V85 | 17/5/13 V85, 20/5/13 v107 |
| HYSA | 17/5/13 V90 | 17/5/13 V90, 23/5/13 v130; 12/6/15 added slit for F11, 8, 1, 7, 12, 26 v360 |
| GOG | 14/6/13 v201 | 12/6/15 added slit for unnamed fault v360 |
| NS | 17/5/13 V86 | 24/5/13 v133, 135; 8/6/15 added split for F19 v344; 12/6/15 added slit for F25, 26, 27 v360 |
| WHM | 20/5/13 v95 | 5/6/13 outcrop coverage mod at Rung 14 v160; 12/6/15 added slit for F5 v360 |
| MRB | 21/5/13 V111 | 5/6/13 outcrop coverage mod at Rung 14 v160; 12/6/15 added slits for F1, 5, 6, 24, 25, v360 |
| DYS | 22/5/13 V112 | 22/5/13 V113; 12/6/15 added slit for F1, 5 v360 |
| CHAM | 22/5/13 V113 | 22/5/13 V114 |
| WLI | 11/6/13 decided not to make coverage | |
| PNG | 11/6/13 decided not to make coverage |