Abstract
Excavation of a new section on the site of the infilled Bugle Pit at Hartwell, Buckinghamshire has allowed revised stratigraphie documentation of the uppermost Creamy Limestones and the Purbeck Limestone Formation (Portlandian) at this locality. Correlations with previous stratigraphie accounts of the old quarry are provided. The palaeoecology and depositional environments of these sediments are considered, and they represent a shallowing upwards sequence from marginal marine shelly limestones and mudstones (Creamy Limestones) up into restricted marine and non-marine marls, clays and fine-grained limestones (Purbeck Limestone Formation). The stratigraphie distribution of gastropods within these strata is documented, and the Purbeck Limestone Formation here is shown to include two major stratigraphie breaks.
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