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Uploaded on:
05/03/2009 05:34:19
Type:
Digital Asset
File Size:
317.79 KB
Dimensions:
1000 x 706 pixels
1215 views 5 downloads
P number: P205701
Old photograph number: A05768
Caption: Poulton Quarry, Poulton, Gloucestershire.
Description: The slate unit in the quarry comprises c.12 ft. of cross-bedded shelly limestones separated by thin clay bands. Unlike some other Middle Jurassic slates those from the Forest Marble, which were once quarried across Gloucestershire, Wiltshire and Oxfordshire, do not require exposure to frost before splitting. Poulton Slates' stacked for dressing after removal from the quarry or delph. Beds of fissile, coarsely shelly limestone occur in the Forest Marble, to the east of Cirencester which were once worked extensively worked for roofing stones. The shelly limestone 'slates' of the Forest Marble are generally thicker and heavier than those obtained from the other formations of the Middle Jurassic e.g at Stonesfield or Colleyweston. Many of the houses in Cirencester and its surrounding villages are roofed with stones from this formation e.g. Arlington Row, Bibury.
Date taken: 01/08/1929
Photographer: Welch, F.B.A.
Copyright statement: Crown
X longitude/easting: 410500
Y latitude/northing: 202500
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Landscape
Size: 317.79 KB; 1000 x 706 pixels; 85 x 60 mm (print at 300 DPI); 265 x 187 mm (screen at 96 DPI);
Average Rating: Not yet rated
Categories: Unsorted Images, Geoscience subjects/ Economic geology/ Slates  

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