• 312  of  383
Uploaded on:
13/02/2009 07:29:01
Type:
Digital Asset
File Size:
307.27 KB
Dimensions:
996 x 1000 pixels
2989 views 4 downloads
P number: P000654
Old photograph number: D01709
Caption: North side of the Bay of Laig, Isle of Eigg. Inverness-shire. Large carbonate concretions in the Valtos Sandstone Formation (Jurassic).
Description: North side of the Bay of Laig, Isle of Eigg. Inverness-shire. Large carbonate concretions in the Valtos Sandstone Formation (Jurassic). The carbonate concretions are believed to have formed during the late Jurassic burial of sand bodies, when calcite precipitated from meteoric-derived pore waters at a depth of 200 to 500 m. and at temperatures of 31 to 34 degrees Centigrade. Using calculations it is estimated that the metre-scale concretions would have taken several million years to form.
Date taken: 01/01/1974
Photographer: Pulsford, J.M.
Copyright statement: NERC
Acknowledgment: This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network
X longitude/easting: 147300
Y latitude/northing: 788800
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Portrait
Size: 307.27 KB; 996 x 1000 pixels; 84 x 85 mm (print at 300 DPI); 264 x 265 mm (screen at 96 DPI);
Average Rating: Not yet rated
Categories: Best of BGS Images/ Geological structures, Geoscience subjects/ Sedimentary features/ Concretions and nodules  

Reviews

There is currently no feedback