| Order | Type | Group | Form-ati | Member | Description | Upper | Lower | Basin |
| By No. | on | Age | Age |
| 2047.0 | SED | LI | MLI | PNSE | Pennard Sands Equivalent | JE | WSXB |
| 2048.0 | STAR | Starfish Bed | JL | DORS |
| 2049.0 | EYCD | Eype Clay Hardground | JT | CECH |
| 2050.0 | EYCL | Eype Clay | JL | DORS |
| 2051.0 | THRE | Three Tiers |
| 2052.0 | MLL | Mid Lias Limestone | WLDB |
| 2053.0 | MLSC | Middle Lias Silts and Clays | WSXB |
| 2054.0 | MLIS | Middle Lias Sands |
| 2055.0 | MLIT | Middle Lias Silts | JE |
| 2056.0 | MLC | Middle Lias Clays | JL |
| 2057.0 | MLSS | Middle Lias Sands and Silts |
| 2058.0 | LLI | Lower Lias | JA | NOCH |
| 2059.0 | LIBS | Black Shales | DORS |
| 2060.0 | JLLS | Laminated Shales |
| 2061.0 | GAB | Green Ammonite Beds | JE | JT | CECH |
| 2062.0 | BELS | Belemnite Stone | JL | DORS |
| 2063.0 | PIST | Pecten Ironstone | JE | EMSH |
| 2064.0 | BM | Belemnite Marls | JS | JE | CECH |
| 2065.0 | SNDR | Sand Rock | EMSH |
| 2066.0 | BVM | Black Ven Marls | JE | CECH |
| 2067.0 | BLVB | Black Ven Beds | JL | DORS |
| 2068.0 | SHWB | Shales with Beef | JS | JE | CECH |
| 2069.0 | FIST | Frodingham Ironstone | EMSH |
| 2070.0 | FISE | Frodingham Ironstone Equivalent |
| 2071.0 | BLI | Blue Lias | CECH |
| 2072.0 | BLLS | Blue Lias Limestones | JH | JS | WSXB |
| 2073.0 | BLIE | Blue Lias Equivalent |
| 2074.0 | HESA | Hettangian Sand | CARD |
| 2075.0 | HELI | Hettangian Limestone | JS | CECH |
| 2076.0 | BLIS | Basal Lias Sands | JL | NONS |
| 2077.0 | BITS | Bituminous Shales | JS | JE | CECH |
| 2078.0 | LLL | Lower Lias Limestone | JL | WLDB |
| 2079.0 | LLC | Lower Lias Clays |
| 2080.0 | HYDL | Hydraulic Limestone Formation | SONS |
| 2081.0 | FBED | Ferruginous Beds | WSXB |
| 2082.0 | WATB | Watchet Beds |
| 2083.0 | SKEG | Skerry Group | TR | JE | WESH |
| 2084.0 | STSK | Stack Skerry Formation | JH | JS |
| 2085.0 | DUNL | Dunlin | JS | JA | NONS |
| 2086.0 | LIUS | Liassic Upper Sand | JL | ESHB |
| 2087.0 | LILS | Liassic Lower Sand |
| 2088.0 | JSAN | JSAN J Sand | INMF |
| 2089.0 | DD | Dunlin D Member | NONS |
| 2090.0 | DCD | Dunlin C & D Member |
| 2091.0 | DC | Dunlin C Member |
| 2092.0 | DB | Dunlin B Member |
| 2093.0 | DUE | Dunlin E Member |
| 2094.0 | DA | Dunlin A Member |
| 2095.0 | DUN4 | Dunlin 4 | ESHB |
| 2096.0 | DUN3 | Dunlin 3 |
| 2097.0 | DUN2 | Dunlin 2 |
| 2098.0 | DUN1 | Dunlin 1 |
| 2099.0 | DUCM | Dunlin Calcareous Member | NONS |
| 2100.0 | DUSL | Dunlin Silt Member |
| 2101.0 | DUSH | Dunlin Shale Member |
| 2102.0 | ADSF | Formation A | ESHB |
| 2103.0 | DDNL | Formation D |
| 2104.0 | BREF | Bressay Sand Formation | T | JL |
| 2105.0 | BRSC | Bressay Calcareous Member |
| 2106.0 | LJ4 | Lower Jurassic Unit IV | JL |
| 2107.0 | LJ3 | Lower Jurassic Unit III |
| 2108.0 | LJ2 | Lower Jurassic Unit II |
| 2109.0 | LJ1B | Lower Jurassic Unit Ib |
| Page 34 of 60 | 07/07/2004 |