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Uploaded on:
14/02/2009 01:56:48
Digital Asset
File Size:
200.86 KB
1000 x 764 pixels
1192 views 5 downloads
P number: P001800
Old photograph number: B00720
Caption: Looking west from a point 1 km. west of Rhuvaal Lighthouse, north coast of Islay, Argyllshire.
Description: Terrace and abandoned cliff of the postglacial raised beach. In the foreground a stack of white quartzite separated from the cliff at the period of formation of the raised beach. Bedrock in foreground is Jura Quartzite (Islay Subgroup, Argyll Group, Dalradian Supergroup). In the bay and on the headland beyond the less resistant underlying Bonahaven Dolomite Formation, consisting of metamorphosed dolomitic limestone, sandstone and siltstone is exposed. The regional dip is about 20 degrees to the south (left). The grassed area below the cliffs is a platform occupied by the sea during early postglacial times, when sea level was up to 14 m. higher than at present. At that time the quartzite stack in the foreground was surrounded by the sea at high tide.
Date taken: 01/01/1913
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: 141600
Y latitude/northing: 679200
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Landscape
Size: 200.86 KB; 1000 x 764 pixels; 85 x 65 mm (print at 300 DPI); 265 x 202 mm (screen at 96 DPI);
Average Rating: Not yet rated
Categories: Unsorted Images, Geoscience subjects/ Landforms, marine/ Raised beaches  


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