| P number: | P208741 |
|---|---|
| Old photograph number: | A08819 |
| Caption: | Coombe Quarry, Maidstone, Kent. |
| Description: | Coombe Quarry, 1/4 m. north-west of Hayle Place, Maidstone. Looking east. A large quarry in Hythe Beds. Coombe Quarry is one of the largest quarries in the Maidstone district, the beds of hard sandy limestone or ragstone in the Hythe Beds being worked chiefly for use as road metal. About 60 ft. of Hythe Beds are exposed here, overlain by about 10 ft. of glauconitic loams of the Sandgate Beds, which forms the overburden to the main quarry face in the background. The Hythe Beds are part of the Cretaceous Lower Greensand, a series of rocks deposited in a former breached lake that became a shallow marine bay. The Sandgate Beds, also part of the Lower Greensand are a series of green or grey argillaceous sands or sandstones and dark grey glauconitic silty mudstones. It varies considerably in thickness over the area, in Sandgate is it 80 feet thick, while in Maidstone it is c. 16 feet thick. There are also marked variations in lithology over its outcrop. |
| Date taken: | Tue Jul 01 00:00:00 BST 1952 |
| Photographer: | Rhodes, J. |
| Copyright statement: | Crown |
| X longitude/easting: | 575300 |
| Y latitude/northing: | 154100 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 360.44 KB; 1000 x 715 pixels; 85 x 61 mm (print at 300 DPI); 265 x 189 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images, Geoscience subjects/ Economic geology/ Quarries |
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