| Order | Type | Group | Form-ati | Member | Description | Upper | Lower | Basin |
| By No. | on | Age | Age |
| 1795.0 | SED | FLAD | BCOL | TLTS | Lower Thin Sand | JB | JN | INMF |
| 1796.0 | TLOS | Lower Sand |
| 1797.0 | BCOH | H H Sand |
| 1798.0 | BCOI | I I Sand |
| 1799.0 | ESKS | Esk Sequence | JA | CNSB |
| 1800.0 | REDU | Red Bed Unit (Fladen) | JM | JU |
| 1801.0 | BRUG | Bruce Group | NONS |
| 1802.0 | BUSY | Upper Sandy Formation | JB |
| 1803.0 | BUSF | Upper Silty Formation |
| 1804.0 | BUU3 | U3 Unit | JN |
| 1805.0 | BUU2 | U2 Unit |
| 1806.0 | BUU1 | U1 Unit |
| 1807.0 | UBRG | Upper Bruce | JB | JN |
| 1808.0 | BYST | Bruce Sandstone | J |
| 1809.0 | LBRG | Lower Bruce | JB | JR |
| 1810.0 | LBAS | AS A Sand |
| 1811.0 | J32B | J32B Unit | JN |
| 1812.0 | J32A | J32A Unit |
| 1813.0 | J31D | J31D Unit |
| 1814.0 | J31C | J31C Unit |
| 1815.0 | J31B | J31B Unit |
| 1816.0 | LBBS | BBS B Sand | JB |
| 1817.0 | BICF | Interbedded Coaly Formation |
| 1818.0 | BMSF | Marine Shaly Formation | JT | JB |
| 1819.0 | BBSF | Basal Sand Formation | TR | JE |
| 1820.0 | LBYS | Lower Bruce Shale | J |
| 1821.0 | BNTE | Brent Equivalent Group | JM |
| 1822.0 | TARQ | Tarbert Equivalent | JN | CNSB |
| 1823.0 | BUSU | Upper Sand Unit | JM | NONS |
| 1824.0 | BASU | ASU A Sand Unit |
| 1825.0 | BBSU | BBSU B Sand Unit |
| 1826.0 | BCSU | CSU C Sand Unit |
| 1827.0 | BISU | Brent Equivalent Interbed Unit |
| 1828.0 | BAES | Arenaceous Series | JB | JN |
| 1829.0 | BLMU | Lower Massive Unit |
| 1830.0 | BDEL | Deltaic Series |
| 1831.0 | BESU | Deltaic Shale Unit |
| 1832.0 | BRNT | Brent | JA | JN |
| 1833.0 | SLMP | Brent Slump | JN | JB |
| 1834.0 | BCY1 | Cycle I | JM | ESHB |
| 1835.0 | BC12 | Unit B1.2 |
| 1836.0 | B13A | Unit B1.3A |
| 1837.0 | B13B | Unit B1.3B |
| 1838.0 | B14A | Unit B1.4A |
| 1839.0 | B14B | Unit B1.4B |
| 1840.0 | B14C | Unit B1.4C |
| 1841.0 | BCY2 | Cycle II |
| 1842.0 | BC21 | Unit B2.1 |
| 1843.0 | BC22 | Unit B2.2 |
| 1844.0 | BC23 | Unit B2.3 |
| 1845.0 | BC24 | Unit B2.4 |
| 1846.0 | BC25 | Unit B2.5 |
| 1847.0 | BCY3 | Cycle III |
| 1848.0 | B32A | Unit B3.2A |
| 1849.0 | B32B | Unit B3.2B |
| 1850.0 | B33A | Unit B3.3A |
| 1851.0 | B33B | Unit B3.3B |
| 1852.0 | B33C | Unit B3.3C |
| 1853.0 | BC32 | Cycle III 2 | NONS |
| 1854.0 | BC33 | Cycle III 3 |
| 1855.0 | BC34 | Cycle III 4 |
| 1856.0 | BCY4 | Cycle IV | ESHB |
| 1857.0 | BC41 | Cycle IV 1 | NONS |
| Page 30 of 60 | 07/07/2004 |