| Order | Type | Group | Form-ati | Member | Description | Upper | Lower | Basin |
| By No. | on | Age | Age |
| 305.00 | SED | FSVF | HEBS | Hebridean Basalt | GY | WESH |
| 306.00 | PABA | Paleocene basalt | GP | GE |
| 307.00 | FABS | Faeroes-Shetland Flood Basalts | GT | ROCK |
| 308.00 | UVOL | Upper Volcanic Member |
| 309.00 | MCLA | Middle Clastics Member |
| 310.00 | LVOL | Lower Volcanic Member |
| 311.00 | LMST | Tertiary Limestone | GP | GE | WCHB |
| 312.00 | CLSM | Clays Lsts Ssts and Marls | GM | Q | STCR COCB COHI |
| 313.00 | ROGE | Rogaland Group Equivalent | GI | ROCK |
| 314.00 | ROGA | Rogaland | NONS CNSB |
| 315.00 | ASRE | Ash Marker Equivalent | GC | MOFI |
| 316.00 | PVMR | Volcanic Marker | GM | WYGG |
| 317.00 | PLTF | Palaeocene Tuff | GP | GE | ESHB |
| 318.00 | EZ1S | Eocene Z1 Sand Formation | GY | CC | CNSB |
| 319.00 | PAHM | Palaeocene Ash Marker | GE | NVIG |
| 320.00 | BSRO | Balder Sandstone Unit | SVIG |
| 321.00 | BSB6 | Balder Formation Sequence 6 | GY | NONS |
| 322.00 | BSB5 | Balder Formation Sequence 5 |
| 323.00 | SUSR | Sele Upper Sandstone Unit | GE | SVIG |
| 324.00 | BTRO | Balder Tuffaceous Unit |
| 325.00 | BFEQ | Balder Formation Equivalent |
| 326.00 | THTF | Thulean Tuff Formation | CNSB |
| 327.00 | CGCF | Central Graben Clay Formation | GP |
| 328.00 | TUFF | Tuff Unit | NONS |
| 329.00 | CODF | Cod Formation Equivalent | SVIG |
| 330.00 | ROGS | Rogaland Sandstone Formation | GY | CNSB |
| 331.00 | BALD | Balder | GZ | GI | NONS CNSB |
| 332.00 | BMIS | Massive Injected Sand Unit | GY | NONS |
| 333.00 | BBRC | Balder Breccia | ROCK |
| 334.00 | BACM | Balder 'C' Marker | GP | NONS |
| 335.00 | BAB4 | B4 Zone |
| 336.00 | BB4S | B4 Sand |
| 337.00 | BAB3 | B3 Unit | GC |
| 338.00 | BB3S | B3 Sand |
| 339.00 | BAB2 | B2 Unit |
| 340.00 | BB2S | B2 Sand |
| 340.51 | BB2B | Balder B2b | GE |
| 340.52 | BB2A | Balder B2a |
| 341.00 | BAB1 | B1 Unit | GC |
| 342.00 | BB1S | B1 Sand |
| 343.00 | BALB | Balder Sand B | GY |
| 344.00 | BALA | Balder Sand A |
| 345.00 | BATF | Balder Tuff Member | GZ | ROCK |
| 346.00 | BTEQ | Balder Tuff Member Equivalent | GE | MOFI |
| 347.00 | IBMK | Intra Balder Marker | GP | CNSB |
| 348.00 | BUPU | Balder Upper Unit | GY | NONS |
| 349.00 | BUSS | Upper Sandy Subunit |
| 350.00 | BAMS | Massive Sand Subunit |
| 351.00 | BDSH | Balder Shale Unit |
| 352.00 | MTZM | Main Tuff Zone Member | GP | SVIG |
| 353.00 | BALC | Balder Claystone Member | GC | NONS |
| 354.00 | BACE | Balder Claystone Equivalent | GC-GY | WESH |
| 355.00 | BLSS | Lower Sandy Subunit | GZ | NONS |
| 356.00 | B1MT | B1 Massive Tuff Member | GP | SVIG |
| 357.00 | B2MB | B2 Member | GY | CNSB |
| 358.00 | BAAN | Balder Sand | GP | SVIG |
| 359.00 | CHAS | Charlie Sand | GY | GC | CNSB |
| 360.00 | GYPH | Gryphon Sand | GP | NONS |
| 361.00 | ODIN | Odin Sand |
| 362.00 | BLDU | Upper Balder |
| 363.00 | BLDM | Middle Balder |
| 364.00 | BLDL | Lower Balder |
| 365.00 | PUTZ | Upper Tuff Zone | ESHB |
| Page 6 of 60 | 07/07/2004 |