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Uploaded on:
13/02/2009 06:17:44
Type:
Digital Asset
File Size:
246.94 KB
Dimensions:
1000 x 761 pixels
2503 views 4 downloads
P number: P000330
Old photograph number: B00873
Caption: Wife Geo, 4.023 km. south of Duncansby Head. Caithness.
Description: Geos are formed by marine erosion along lines of weakness called 'crushes' or 'rucks'. The waves rush into these inlets or caves compressing air under great pressure against the cavity. On recoil the pressure is suddenly released. This alternate compression and expansion loosens the rock in any weaknesses and so over time forms the geo. Geo cut in the horizontal flagstones of the Thurso Group. This geo, the largest in Caithness, has two entrances from the sea, one by a narrow canyon and the other by a cave excavated through the cliff.
Date taken: 01/01/1912
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: 339800
Y latitude/northing: 969700
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Landscape
Size: 246.94 KB; 1000 x 761 pixels; 85 x 64 mm (print at 300 DPI); 265 x 201 mm (screen at 96 DPI);
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