Aldeburgh Hall Pit
Also within
Condition (Natural England)
| Unit | Feature | Condition | Area (ha) | Assessed |
|---|---|---|---|---|
| TM452566 | — | Favourable | 0.96 | 2023-05-27 |
Geology & landscape
Geological Period: Neogene
Description
Area, 0.8 ha. 1.9 ac. Description This shallow pit is of great geological interest. It shows a section in a very fossiliferous facies of the Pliocene Coralline Crag. Aragonitic fossils are absent due to diagenetic post depositional solution, but may be preserved as internal and external moulds. The fauna of calcitic bryozoans is extremely rich and diverse. Most conspicuous of these bryozoans are the large spherical colonies of Meandropora and Blumenbachium. Articulated colonies of Cellaria are present, showing unusually good preservation for such coarse bioclastic sediments. Calcitic bivalves are generally encrusted with well preserved bryozoans and serpulids. The small face here shows low angle stratification current bedding which may represent the internal structure of an offshore sandbank. This locality yields probably the best Neogene fauna in Britain and is very important in comparison with present day shelf bed forms and faunas.