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Musbury Tor
Musbury Tor is a flat topped hill overlooking Helmshore in Rossendale, Lancashire, England. It separates Alden Valley to its south and Musbury Valley to the north. It is a very popular walking spot and the views from the top are magnificent. It is on farmland and is mainly sheep pasture. It is one of the tallest hills (338m) in the Rossendale valley and can be seen from much of Helmshore. A panoramic view from the top is shown in Chris Aspin, Derek Pilkington and John Simpson's book of Helmshore.〔Helmshore (ISBN 978-0-906881-07-1)〕 == Geology == The underlying solid geology of the Rossendale fells is largely formed by the Lower Coal Measure comprising bedded sandstones, shales and mudstones. Rocks of the Millstone Grit series outcrop above the valley of the River Irwell and cap the hills. Musbury Tor is a perfect example of peneplanation leaving an almost isolated flat-topped hill where the harder Millstone Grit protects the softer underlying shales, leaving the distinctive sharp topography of edges and ledges characteristic of the uplands above the Irwell Valley.〔A.E. Trueman, ''Geology and Scenery in England and Wales''. Pelican Books, 1971.〕 The other small scale topographic variations such as the undulating hummocky landforms are generally due to the former workings and stone quarries.〔http://www.lancashire.gov.uk/environment/landscape/landscapecharacass/charcarea3.asp〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Musbury Tor」の詳細全文を読む
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