P number: | P210142 |
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Old photograph number: | A10240 |
Caption: | Top Lower Tunbridge Wells pebble bed, Philpots Quarry, West Hoathly, Sussex. |
Description: | Looking east at Philpots Quarry, West Hoathly. The top Lower Tunbridge Wells pebble bed with large interference ripple marks. This pebble bed is commonly built up into large oscillation ripples: here, two contemporaneous periods of ripple formation have produced the basin and swell patterns characteristic of interference ripples. A calcareous or ferruginous cement is usually present. This surface has been cleared of Grinstead Clay (small weathered amounts still present in the hollows near the hammer) to work the sandstone below. Open joints (centre left, partly infilled with calcite derived from thin limestones in the Grinstead Clay) greatly facilitate this working. The pebble bed is part of the Ardingly Sandstone, the uppermost bed of the Lower Tunbridge Wells Sand. The pebble bed was deposited on broad alluvial flats cut by meandering distributary channels. The overlying Grinstead Clay was deposited in shallow lakes. |
Date taken: | Wed Jan 01 00:00:00 GMT 1964 |
Photographer: | Pulsford, J.M. |
Copyright statement: | Crown |
X longitude/easting: | 535500 |
Y latitude/northing: | 132500 |
Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
Orientation: | Landscape |
Size: | 419.84 KB; 1000 x 795 pixels; 85 x 67 mm (print at 300 DPI); 265 x 210 mm (screen at 96 DPI); |
Average Rating: | Not yet rated |
Categories: | Unsorted Images, Geoscience subjects/ Sedimentary features/ Ripple-marks |
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