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Uploaded on:
13/02/2009 06:04:02
Digital Asset
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193.89 KB
1000 x 760 pixels
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P number: P000255
Old photograph number: B00612
Caption: The north-west face (868.38 m.) of Aonach Dubh, from near Clachaig, Glen Coe. Argyllshire.
Description: Lower Old Red Sandstone volcanic rocks. The rocks are preserved in a downfaulted block within an elliptical ring structure called a cauldron subsidence. Moraine mounds in the foreground. The topmost scree-clad slope on right, consists of hornblende-andesite and agglomerate, which overlie thick flows of rhyolitic lavas and ignimbrites forming the upper part of the bluff. These overlie numerous flows of augite-andesite, which rest unconformably on phyllites. The hill slope on right consists of granite, 'Fault Intrusion', intruded into Highland schists (quartzite, etc.). The Glencoe complex was formed by pressure of rising molten rock called magma forming a ring-shaped fracture, the rocks enclosed by the fracture were downfaulted. Much later, and after subsequent uplift and erosion, the downfaulted rocks were preserved as they were lower than the surrounding rocks which were eroded away.
Date taken: 01/01/1896
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: 215500
Y latitude/northing: 756200
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Landscape
Size: 193.89 KB; 1000 x 760 pixels; 85 x 64 mm (print at 300 DPI); 265 x 201 mm (screen at 96 DPI);
Average Rating: Not yet rated
Categories: Unsorted Images, Geoscience subjects/ Igneous features/ Lava flows, Geoscience subjects/ General views/ Igneous rock country  


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