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Uploaded on:
14/02/2009 02:33:55
Type:
Digital Asset
File Size:
131.77 KB
Dimensions:
1000 x 733 pixels
1248 views 4 downloads
P number: P002023
Old photograph number: C00596
Caption: Pentland Hills, from above Glencorse Reservoir, Midlothian. Looking south-west. This part of the Pentlands is composed of Devonian volcanic rocks.
Description: Pentland Hills, from above Glencorse Reservoir, Midlothian. Looking south-west. This part of the Pentlands is composed of Devonian volcanic rocks. Escarpment of basic lavas capped by acid lavas and tuffs, forming line of hills. Stream cutting boulder clay in the foreground. Glencorse Reservoir is one of several in the Pentland Hills which were constructed in the 19th century for public water supply to Edinburgh. The Pentland Hills exhibit a variety of volcanic rocks of Devonian age. The majority are lavas which range in composition from olivine basalts through andesites to rhyolites and trachytes. Subsidiary tuffs are also interbedded with many of the lavas. There is also a considerable number of minor intrusions of similar age and range in composition from olivine-dolerite to andesite. In places, the lava succession totals almost 2000 m. in thickness.
Date taken: 01/01/1892
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: 321500
Y latitude/northing: 663500
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Landscape
Size: 131.77 KB; 1000 x 733 pixels; 85 x 62 mm (print at 300 DPI); 265 x 194 mm (screen at 96 DPI);
Average Rating: Not yet rated
Categories: Unsorted Images, Geoscience subjects/ General views/ Igneous rock country  

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