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P000015

Uploaded on:
2009-02-13 05:18:35.0
Type:
Digital Asset
File Size:
217.27 KB
Dimensions:
1000 x 729 pixels
3608 views 4 downloads
P number: P000015
Old photograph number: C01533
Caption: Holborn Head Quarry, 4.0 km. north-east of Thurso. Caithness. General view of the flagstone quarry showing method of raising marketable flagstones.
Description: Holborn Head Quarry, 4.0 km. north-east of Thurso. Caithness. General view of the flagstone quarry showing method of raising marketable flagstones. The flat floor of the quarry is along a bedding plane of flagstone of inferior quality. Note the square pattern of vertical joints which are used during the working of the stone. Piles of dressed flagstones ready for removal to be sawn. As the working face advances in the large quarries that have been worked for long periods a perfectly smooth surface which formed the bed of the pavement layer is left as the floor of the quarry. At Holborn Head it is a striking demonstration of the characteristic evenness of the bedding of the Caithness Flagstones.
Date taken: Sat Jan 01 00:00:00 GMT 1910
Photographer: Lunn, R.
Copyright statement: Crown
Acknowledgment: This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network
X longitude/easting: 310500
Y latitude/northing: 971500
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Landscape
Size: 217.27 KB; 1000 x 729 pixels; 85 x 62 mm (print at 300 DPI); 265 x 193 mm (screen at 96 DPI);
Average Rating: Not yet rated
Categories: Unsorted Images, Geoscience subjects/ Economic geology/ Building stones, sandstone, Geoscience subjects/ Sedimentary features/ Bedding-planes  

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