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| Strat. Group | Short Description | Sub Group | Options |
|---|---|---|---|
| PCO06_1 | Natural gravels of site area |    | |
| PCO06_2 | Palaeochannel and three silting up deposits cut into the natural geology of the site area | | |
| PCO06_3 | Layers of redeposited natural | | |
| PCO06_4 | Large open quarry pit face | | |
| PCO06_5 | Layers of redeposited natural within the quarry face | | |
| PCO06_6 | Sequence of intercutting pits | | |
| PCO06_7 | Sequence of pits | | |
| PCO06_8 | Heavily truncated linear | | |
| PCO06_9 | Sterile layers sealing early pits and a linear | | |
| PCO06_10 | Intercutting refuse pits | | |
| PCO06_11 | Cut and fill of refuse pit | | |
| PCO06_12 | Linear cut | | |
| PCO06_13 | Linear fill | | |
| PCO06_14 | Early Post Medieval quarry pit cut | | |
| PCO06_15 | Backfill of quarry pit cut | | |
| PCO06_16 | Gravel layers lain down over Post Medieval quarry pit fills | | |
| PCO06_17 | Late Post Medieval construction elements, fronting on to Prescot St. | | |
| PCO06_18 | Early Post Medieval pits | | |
| PCO06_19 | Late Post Medieval floor slabs | | |
| PCO06_20 | Linear feature & cut feature | | |
| PCO06_21 | Vacant Roman grave cut | | |
| PCO06_22 | Early Roman burials | | |
| PCO06_23 | Heavily truncated Roman linear | | |
| PCO06_24 | Post Medieval refuse pit | | |
| PCO06_25 | Large Post Medieval quarry pit cut | |