The BGS Lexicon of Named Rock Units — Result Details
Rogate Member
| Computer Code: | RGTB | Preferred Map Code: | RoB |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Aptian Age (KP) — Aptian Age (KP) | ||
| Lithological Description: | The member is a heterogeneous succession of coarse-grained pebbly sands, very glauconitic clayey pebbly sands, glauconitic pebbly and sandy clays, calcareously cemented pebble beds and coarse-grained pebbly sands with many polished limonite pebbles. | ||
| Definition of Lower Boundary: | The base is taken at the top of the Hythe Formation and is marked by the incoming of pebbles (including pebbles of polished limonite), usually set in a slightly clayey, glauconitic sandy matrix. | ||
| Definition of Upper Boundary: | The upper boundary is conformable at the base of the Pulborough Sandrock Member, marked by the top of a glauconitic pebbly sandy clay where present and elsewhere at the change from pebbly sands to the fine-grained, well-sorted Pulborough Sandrock Member (but note scattered coarse grains occur in the basal metre or so of the Sandrock). | ||
| Thickness: | 4 to 46m. | ||
| Geographical Limits: | Western Weald; outcrop extends from Stedham, West Sussex, to north of Liss in Hampshire. | ||
| Parent Unit: | Sandgate Formation (SAB) | ||
| Previous Name(s): | Sandgate Beds (Undifferentiated) [Obsolete Name and Code: Use RGTB]
(-4297)
Selham Ironshot Sands [Obsolete Name and Code: Use SIS, RGTB] (*328) Rogate Beds [Obsolete Name and Code: Use RGTB] (-492) |
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| Alternative Name(s): | Selham Ironshot Sands [Obsolete: use SIS, RGTB] |
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| Stratotypes: | |||
| Type Area | Rogate village and surroundings (Bristow, 1991). | ||
| Reference(s): | |||
| Bristow, C R. 1991. Geology of the Petersfield District, Hampshire. Explanation of 1:10,000 Geological sheets SU72NW, 72NE, 72SW, 72SE, 82NW and 82SW. British Geological Survey Technical Report WA/91/24. | |||
| Bristow, C R, and Wyatt, R J. 1983. Geological notes and local details for 1:10 000 sheets TQ01NW, NE, SW and SE (Pulborough and Storrington). British Geological Survey Technical Report WA/VG/83/03. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E300 E317 E332 | |||