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P000773

Uploaded on:
13/02/2009 08:15:24
Type:
Digital Asset
File Size:
291.24 KB
Dimensions:
987 x 1000 pixels
6333 views 8 downloads
P number: P000773
Old photograph number: D02218
Caption: Oblique aerial view of The Great Face, the south end of the island of Staffa. Argyll and Bute. The Boat Cave is on the left and Fingal's Cave on the right. Massive, straight, well-formed columnar jointing in the Tertiary volcanic lava flow.
Description: Oblique aerial view of The Great Face, the south end of the island of Staffa. Argyll and Bute. The Boat Cave is on the left and Fingal's Cave on the right. Massive, straight, well-formed columnar jointing in the Tertiary volcanic lava flow. The classic type of columnar jointing consists of a close-packed series of hexagonal 'prisms' lying perpendicular, in this case, to the base of the lava flow. Columnar jointing is formed by contraction during the cooling of the lava when a pattern of tensional forces acting towards a number of centres is set up. These forces tend to pull open a series of joints which ideally assume a hexagonal pattern.
Date taken: 01/01/1977
Photographer: Christie, A.
Copyright statement: NERC
Acknowledgment: This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network
X longitude/easting: 133500
Y latitude/northing: 735500
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Portrait
Size: 291.24 KB; 987 x 1000 pixels; 84 x 85 mm (print at 300 DPI); 261 x 265 mm (screen at 96 DPI);
Average Rating: Not yet rated
Categories: Best of BGS Images/ Landscapes, Geoscience subjects/ Named locality, Geoscience subjects/ Structural geology/ Jointing  

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