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Uploaded on:
20/02/2009 05:59:17
Type:
Digital Asset
File Size:
343.78 KB
Dimensions:
676 x 1000 pixels
89 views 4 downloads
P number: P213703
Old photograph number: A15099
Caption: Copper Hill Quarry, Ancaster.
Description: Copper Hill Quarry, Ancaster. Upper Lincolnshire Limestone, Copper Hill Quarry. Part of the north-north-west face of the quarry c. 150 m. to the south-west (i.e. off-picture to the left) of the foregoing picture. The topmost unit of coarse-grained peloidal, partly shelly oolite grainstone (bed 26 of N.G. Berridge=Clipsham member=Ancaster Rag) shows a consistent northward 20 - 30 degrees cross-bedded dip.Beneath it, 2.4 m. of imbricate cross-bedded less coarse-grained oolite grainstone is defined as Bed 25. About 2 m. of underlying similar strata, here split into two posts, is defined as Bed 24. Together Beds 24 and 25 comprise the 'Ancaster Freestone' or 'Sleaford Member' of Ashton. Note the crenulate nature of the underlying unconformity on thin-bedded Lower Lincolnshire Limestone (mostly calcisiltite here), particularly near the head of the hammer held by the observer.
Date taken: 01/09/1991
Photographer: Evans, H.J.
Copyright statement: NERC
X longitude/easting: 497820
Y latitude/northing: 342680
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Portrait
Size: 343.78 KB; 676 x 1000 pixels; 57 x 85 mm (print at 300 DPI); 179 x 265 mm (screen at 96 DPI);
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