| Cambridge Greensand | |
|---|---|
| Stratigraphic range: Earliest Cenomanian ~ | |
| Type | Member |
| Unit of | West Melbury Marly Chalk Formation |
| Underlies | Chalk Group |
| Overlies | Gault Formation |
| Thickness | 0.1–1 m (0.33–3.28 ft) |
| Lithology | |
| Primary | Glauconitic marl |
| Other | Phosphorite |
| Location | |
| Coordinates | 52°12′N 0°06′E / 52.2°N 0.1°E |
| Approximate paleocoordinates | 41°00′N 1°48′E / 41.0°N 1.8°E |
| Region | England |
| Country |  UK |
| Extent | North Hertfordshire and Cambridgeshire |
| Type section | |
| Named for | Cambridge |
| Location | Arlesey Brickpit |
  Cambridge Greensand (England) | |
The Cambridge Greensand is a geological unit in England whose strata are earliest Cenomanian in age.[1] It lies above the erosive contact between the Gault Formation and the Chalk Group in the vicinity of Cambridgeshire, and technically forms the lowest member bed of the West Melbury Marly Chalk Formation.[2] It is a remanié deposit, containing reworked fossils of late Albian age, including those of dinosaurs and pterosaurs.
- ^ Hart, Malcolm B.; Fox, Lyndsey R. (2020). "Micropalaeontology and stratigraphical setting of the Cambridge Greensand". Geological Society, London, Special Publications. 498 (1): 147–163. Bibcode:2020GSLSP.498..147H. doi:10.1144/SP498-2018-144. ISSN 0305-8719. S2CID 210304478.
- ^ Cambridge Greensand at BGS