| P number: | P213014 |
|---|---|
| Old photograph number: | A14037 |
| Caption: | Head Gravel and raised beach deposits, Amey Roadstone Company's Eartham Pit, West Sussex. |
| Description: | Amey Roadstone Company's Eartham Pit, Boxgrove Common, near Chichester showing the south end of workings looking approximately north 10 degrees west. Head gravel and raised beach deposits. General view of workings showing Upper Chalk with flint nodules exposed in foreground, overlain by up to 5 m. of raised beach deposits ('Slindon Sand') which is yellow brown, and up to 10 m. of Head Gravel ('Coombe Deposits') which is reddish brown. The surface of marine erosion cut on the Chalk is planar and slopes gently southward, from about 35 to 30 m. O.D. Halnaker Windmill (at 127 m. O.D.) is central on the horizon. The Upper Chalk is Cretaceous in age. Coombe deposits are a particular type of drift usually found in association with coombes of the Chalk escarpments. Thicknesses of up to 80 feet have been recorded on the South Downs. They were formed in periglacial conditions when, during the warmer intervals, the upper layers of the permafrost thawed and sludges of water, soil and subsoil slipped from the higher slopes and covered large areas of the lower ground. |
| Date taken: | Thu Oct 01 00:00:00 BST 1981 |
| Photographer: | Collins, R.E. |
| Copyright statement: | NERC |
| X longitude/easting: | 492300 |
| Y latitude/northing: | 108100 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 230.73 KB; 1000 x 657 pixels; 85 x 56 mm (print at 300 DPI); 265 x 174 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images, Geoscience subjects/ Landforms, marine/ Raised beaches |
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