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II.—The Perched Blocks of Norber Brow and their Levels Relative to their Place of Origin
Published online by Cambridge University Press: 01 May 2009
Extract
In a recent excursion the Liverpool Geological Society visited Norber Brow, near Austwick, to inspect the celebrated perched blocks of Silurian rock lying upon the Carboniferous limestone plateau. The visit was made in very appropriate weather during a storm of hail which added a weird element to the scene and heightened by contrast the blackness of the Silurian blocks. Since returning home I have re-read Prof. McKenny Hughes' interesting paper on the subject, and find that generally speaking my notes and measurements are in accord with his. The angularity of the perched blocks, so different to the rounded and striated erratics of the Boulder Clay Plains of Lancashire and Cheshire, and the absence of Boulder Clay, is very striking, and inevitably suggests their transportal by glacier ice probably at the last phase of the glacial period.
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References
page 291 note 1 On some Perched Blocks and Associated Phenomena, Q.J.G.S. vol. xlii. pp. 527–538 (1886).Google Scholar
page 291 note 2 Q.J.G.S. vol. xlii. pp. 531 and 538.Google Scholar
page 292 note 1 Rivers and Mountains of Yorkshire, 1855, p. 111.Google Scholar