| Back | Main Details | Rocks | Usage | References |
| Quarried Stones: | Local Name(s): | |
|---|---|---|
| Portland Base Bed |
Portland Best Bed Portland Bottom Bed Portland White Bed Portland Base Bed |
|
| Portland Roach |
Portland Roche Portland Roach |
|
| Portland Whit Bed |
Portland Whit Bed Portland Brown Bed |
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