| Order | Type | Group | Form-ati | Member | Description | Upper | Lower | Basin |
| By No. | on | Age | Age |
| 182.00 | SED | HORD | EMSS | Eocene massive sand | GL | SVIG |
| 183.00 | BSEM | Base Eocene massive sand |
| 184.00 | MCHO | Middle Clay Unit | GE |
| 185.00 | ESHL | Eocene Shale | NONS |
| 186.00 | LOOV | Lower Eocene Sand Equivalent | GW | MOFI |
| 187.00 | LESS | Lower Eocene Sand | GE | SVIG |
| 188.00 | LESH | Lower Eocene Shale |
| 189.00 | LEUC | Lower Eocene-Upper Palaeocene Cl | GC | GE | ESHB |
| 190.00 | LEUS | Lower Eocene-Upper Palaeocene Sn |
| 191.00 | MUEH | Middle-Upper Eocene Sand | GE | SVIG |
| 192.00 | LNSC | Lower North Sea Clay Formation | GN | CNSB |
| 193.00 | GLAS | Glauconitic Sand | GE | MOFI |
| 194.00 | RMDU | Red Mudstone Unit | GZ | SVIG |
| 195.00 | RMDE | Red Mudstone Member Equivalent |
| 196.00 | HORF | Horda Formation | GY | GL | MOFI |
| 196.50 | TYSU | Upper Tay Sandstone Member | GL | GA | CNSB |
| 196.60 | MTSH | Mid Tay Shale | GY |
| 197.00 | CHS4 | Chestnut Unit S4 | GL | NONS |
| 198.00 | CHS3 | Chestnut Unit S3 |
| 199.00 | CHS2 | Chestnut Unit S2 |
| 200.00 | MEOS | Mid Eocene Sandstone | GM | CNSB |
| 201.00 | FRHL | Frigg Heterolithic | GY | NONS |
| 202.00 | SKUD | Skroo D Sandstone Member | SVIG |
| 203.00 | SKUC | Skroo C Sandstone Member |
| 204.00 | HTFM | Tuffaceous Marker | MOFI |
| 205.00 | LBRD | Lower Brodie Sandstone | GE |
| 206.00 | BRDE | Brodie Sandstone Member | GA | NONS |
| 207.00 | HCAR | Caran Sandstone Member |
| 208.00 | TYSL | Tay Sandstone Member (Lower) | GE | CNSB |
| 209.00 | UGSM | Upper Grid Sandstone Member | SVIG |
| 210.00 | MGSM | Main Grid Sandstone Member |
| 211.00 | LGSM | Lower Grid Sandstone Member | GY |
| 212.00 | TMEU | Top Mid Eocene Unit | GL | CNSB |
| 213.00 | BMEU | Base Mid Eocene Unit |
| 214.00 | TMES | Top Mid Eocene Lower Sst Unit |
| 215.00 | BMES | Base Mid Eocene Lower Sst Unit |
| 216.00 | SUQM | Sand Unit Equivalent | GV | SVIG |
| 217.00 | SKRO | Skroo Sandstone Member | GL | GY |
| 218.00 | SKRQ | Skroo Sandstone Member Equivalent | GY |
| 219.00 | SKUB | Skroo Sandstone 'Unit B' | NONS |
| 220.00 | BSQM | Base Sand Equivalent | GV | SVIG |
| 221.00 | BELT | Belton Member | GL | MOFI |
| 222.00 | BELD | Belton Sand | GA | NONS |
| 223.00 | HUSU | Horda Upper Sand Unit | SVIG |
| 224.00 | HMSU | Horda Massive Sand Unit |
| 225.00 | NAUC | Nauchlan Member Equivalent | GE |
| 226.00 | NARF | Nar Member | GY | GL | CNSB |
| 227.00 | NAUH | Nauchlan Member | GA | G | NONS |
| 228.00 | MNAS | Main Nauchlan Sand | GE | MOFI |
| 229.00 | HOR3 | Horda H3 | GW | GL | SVIG |
| 230.00 | HOR2 | Horda H2 Unit | GE | CNSB |
| 231.00 | HOR1 | Horda H1 Unit |
| 232.00 | GLAU | Glauconite Sand Member | MOFI |
| 233.00 | HORC | Horda Claystone Member |
| 234.00 | THET | Thet Sand Member | GA |
| 235.00 | GRDM | Grid Member | GL | NONS MOFI |
| 236.00 | GRBR | Grid Sandstone Member (Brodie) | GE | CNSB |
| 237.00 | GRCA | Grid Sandstone Member (Caran) |
| 238.00 | GDCB | Grid (Caran 'B') Sandstone Member | GL | GA | NONS |
| 239.00 | GDCA | Grid (Caran 'A') Sandstone Member |
| 240.00 | HFEQ | Horda Formation Equivalent | MOFI |
| 241.00 | LHOR | Lower Horda Formation | GY | WESH |
| 242.00 | ALBA | Alba Sands | GL | SVIG |
| Page 4 of 60 | 07/07/2004 |