| P number: | P209840 |
|---|---|
| Old photograph number: | A09931 |
| Caption: | Chalk cliffs and wave-cut platform, Black Rock, Brighton, Sussex. |
| Description: | Looking east at Black Rock, Brighton showing the Upper Cretaceous Chalk cliffs with the wave-cut platform beneath. The edge of the Coombe Deposits section is seen in the left of the picture. During the past century erosion of this part of the coastline was greatly accelerated by the erection of groynes at Brighton and Hove which caused the protective shingle bank to be lost here (since material was lost by easterly longshore drift but was not replaced due to the Brighton Groyne). Recently erosion has been arrested by the construction of a continuous sea wall. The distinctive chalk cliffs are a pure white limestone that forms escarpments for most of its outcrop and vertical cliffs where the escarpments reach the coast. The chalk is a marine limestone deposited following the Cennomanian transgression when much of central and western Europe underwent subsidence, became submerged and great thicknesses of white calcareous mud was laid down. |
| Date taken: | Tue Jan 01 00:00:00 GMT 1963 |
| Photographer: | Pulsford, J.M. |
| Copyright statement: | Crown |
| X longitude/easting: | 533500 |
| Y latitude/northing: | 103500 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 317.57 KB; 1000 x 787 pixels; 85 x 67 mm (print at 300 DPI); 265 x 208 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images, Geoscience subjects/ Landforms, marine/ Marine platforms |
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