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P000025

Uploaded on:
13/02/2009 05:20:17
Type:
Digital Asset
File Size:
239.24 KB
Dimensions:
1000 x 745 pixels
6439 views 4 downloads
P number: P000025
Old photograph number: C02165
Caption: Black Moss, 2.4 km. north of Dinnet Station. Aberdeenshire.The kieselguhr (diatomite) works. Extracting the kieselguhr.
Description: Black Moss, 2.4 km. north of Dinnet Station. Aberdeenshire.The kieselguhr (diatomite) works. Extracting the kieselguhr. Kieselguhr overlain by peat marking site of silted-up lake. The vertical trenches show the method of draining the peat. Before silting-up, the shallow lakes had an abundant supply of nutrients and silica from the surrounding granites. Conditions were ideal for the prolific growth of lacustrine diatoms and the formation of fairly pure diatomite. Subsequent climate change and lowering lake levels lead to the formation of the overlying peat.
Date taken: 01/01/1917
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: 346500
Y latitude/northing: 801500
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Landscape
Size: 239.24 KB; 1000 x 745 pixels; 85 x 63 mm (print at 300 DPI); 265 x 197 mm (screen at 96 DPI);
Average Rating: Not yet rated
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