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Uploaded on:
20/02/2009 06:13:10
Digital Asset
File Size:
260.99 KB
1000 x 666 pixels
88 views 5 downloads
P number: P213711
Old photograph number: A15107
Caption: Gregory's Quarry, Wilsford Heath.
Description: Gregory's Quarry, Wilsford Heath. Limestone working, Gregory's Quarry. A view of active quarrying operations in Upper Lincolnshire Limestone showing the tools and technique of the quarrying. The darker coloured upper half of the working stoneface consists of the 'weatherstone' - a coarse-grained, shelly peloidal oolite grainstone characterized by vigorous cross-bedded units, many with unoxidised 'blue' cores. Probably the same thing as 'Ancaster Rag' or Clipsham Member (of M. Ashton). The stone beneath the ladder is called the 'Hard White' locally but is equivalent to 'Ancaster Stone', an even-grained, well-cemented less strongly cross-bedded oolite grainstone. It may be Sleaford Member of Ashton though Ashton himself classed it as part of the Clipsham Member.
Date taken: 01/09/1991
Photographer: Evans, H.J.
Copyright statement: NERC
X longitude/easting: 498950
Y latitude/northing: 341090
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Landscape
Size: 260.99 KB; 1000 x 666 pixels; 85 x 56 mm (print at 300 DPI); 265 x 176 mm (screen at 96 DPI);
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