Halfway House Quarry
Also within
Condition (Natural England)
| Unit | Feature | Condition | Area (ha) | Assessed |
|---|---|---|---|---|
| ST601163 | — | Unfavourable Declining | 0.87 | 2010-11-05 |
| ST601164 | — | Unfavourable Declining | 0.87 | 2010-11-05 |
Geology & landscape
Geological Period: Jurassic
Description
Area, 1.3 hectares 3.2 ac Description Historically the area around Halfway House has played a key part in unravelling the complex story of mid Jurassic stratigraphy and thus in advancing the science of geology as a whole. The most famous section at Halfway House in addition to providing the internationally important type locality for the truellei subzone of the Upper Bajocian time interval, also exhibits a fully representative section through the Inferior Oolite as typically developed in this part of Dorset. Here, due to variations in conditions at the time of deposition, there are five major non sequences or gaps in the succession and numerous 'hard grounds' which represent areas of rocky sea bed, on which sediment deposition was very limited.