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Uploaded on:
19/02/2009 07:55:03
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P number: P212535
Old photograph number: A13482
Caption: Craig-y-cwm cirque, Llanover, Gwent.
Description: Craig-y-cwm cirque and floor at Craig-y-cwm and Ochram Brook, west of Llanover. Foreshortened view down the steep (33 degrees gradient) rear wall of Craig-y-cwm formed by the Brownstones. Similar cirque-like landforms along the East Crop scarp face north-east but many lack the rock floor and lip of true cirques. They lie above and outside the general level of glacial deposition and their deposits appear to overlie Usk glacial deposits where in contact. Possibly they represent nivation cirques, whereby a small glacial cirque was subsequently enlarged and modified by nivation, aided by landslipping. The central fields are composed of peaty clays probably on the site of an infilled llyn. The irregular moundy country (? disrupted gelifluction terraces) is composed of local angular debris and slopes down to Ocham Brook. A steep-sided ridge, (? protalus rampart) separates these two areas.
Date taken: 01/01/1978
Photographer: Pulsford, J.M.
Copyright statement: NERC
X longitude/easting: 328100
Y latitude/northing: 208800
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Landscape
Size: 301.62 KB; 1000 x 677 pixels; 85 x 57 mm (print at 300 DPI); 265 x 179 mm (screen at 96 DPI);
Average Rating: Not yet rated
Categories: Unsorted Images, Geoscience subjects/ Landforms, weathering/ Coombe rock  


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