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This article is about a peak. For the English independent comic book publisher, see Mam Tor Publishing.
Mam Tor
Mam Tor Castleton.jpg
Mam Tor, July 2011
Highest point
Elevation 517 m (1,696 ft)
Prominence 62 m (203 ft)
Coordinates 53°20′57″N 1°48′38″W / 53.34914°N 1.81069°W / 53.34914; -1.81069Coordinates: 53°20′57″N 1°48′38″W / 53.34914°N 1.81069°W / 53.34914; -1.81069
Geography
Mam Tor is located in Derbyshire
Mam Tor
Mam Tor
Mam Tor in Derbyshire
Location Peak District, England
OS grid SK127836
Topo map

OS Explorer OL1

OS Landranger 110

Mam Tor is a 517 m (1,696 ft) hill near Castleton in the High Peak of Derbyshire, England. Its name means "mother hill",[clarification needed] so called because frequent landslips on its eastern face have resulted in a multitude of 'mini-hills' beneath it.[1] These landslips, which are caused by unstable lower layers of shale, also give the hill its alternative name of Shivering Mountain.[2] In 1979 the continual battle to maintain the A625 road (Sheffield to Chapel en le Frith) on the crumbling eastern side of the hill was lost when the road officially closed as a through-route.

At the base of the Tor and nearby are four show caves: Blue John Cavern, Speedwell Cavern, Peak Cavern and Treak Cliff Cavern where lead, Blue John, fluorspar and other minerals were once mined.

Geography[edit]

Mam Tor dominates the skyline west of Castleton

Mam Tor is on the southern edge of the Dark Peak (sandstones) and overlooks the White Peak (limestones), including the notable dry gorge of Winnats Pass. It is a dominating link between the eastern end of Rushup Edge and the western end of the Great Ridge, which together separate the Hope Valley to the south from Edale to the north, and is a popular ridgewalk.

Mam Tor is made of rocks of Carboniferous age, approximately 320 million years old. The base of Mam Tor is composed of black shales of the Bowland Shale Formation of Serpukhovian age overlain by turbiditic sandstone of the Mam Tor Sandstone Formation of Bashkirian age.[3]

In perfect weather conditions, Manchester City Centre, Stockport, and Winter Hill can be seen from here.

Mam Tor landslide[edit]

A section of the abandoned road

The most notable feature of Mam Tor is the active landslip which invades its southeast side almost to the summit, and interrupts the ramparts of the hillfort, unless its builders used it as part of the defences. This rotational landslide began roughly 4,000 years ago. The toe is a debris flow. The landslide is due to weak shales underlying sandstones, a common phenomenon all around the Dark Peak, notably at Alport Castles, Longdendale, Glossop, and Canyards Hills, Sheffield. Indeed, three larger landslips occur on the north side of Mam Tor, one of them cutting the main ridge at Mam Nick which allows a minor road over into Edale; another creates the striking crag of Back Tor well seen from Mam Tor.[4]

Evidence for the continued movement of the slide mass is demonstrated graphically by the severe damage to the old Mam Tor road that traversed this flow. The road was built at the beginning of the 1800s and was subsequently relaid until local authorities closed it in 1979. Layers of tarmac and gravel are up to 2 metres (6 ft 7 in) thick in places, demonstrating the numerous efforts to keep the road open. A short tunnel could readily have been made avoiding the landslip zone, but the opportunity to exclude heavy business and lorry traffic from the middle of the National Park was preferred. A local diversion for light vehicles follows the limestone gorge of Winnats Pass. Sheffield-Manchester traffic must now make a slow and lengthy detour over the A628 Woodhead Pass. This is one of the most extreme cases of geological problems affecting main transport systems in Britain, comparable with the railway at Dawlish.

Current mean annual movement is "up to 0.25 m; this increases greatly when winter rainfalls exceed thresholds of both 210 mm/month and 750 mm in the preceding six months."[5]

The debris flow poses no threat to any inhabited buildings; however, small farm buildings lying in the flow's path may soon be overwhelmed assuming a flow rate similar to that of the present. The 2000 study suggests that deep drainage may be the most effective means of stabilising the flow, though this may not completely stop movement.

Prehistory[edit]

The summit of Mam Tor is encircled by a late Bronze Age and early Iron Age univallate hill fort. Radiocarbon analysis suggests occupation from around 1200 BC. The earliest remaining features are two Bronze Age burial mounds, one just below the summit and the other on the summit itself, though now buried under the paving. At a later stage over a hundred small platforms were levelled into the hill near the summit, allowing inhabited timber huts to be constructed. The hill fort and burial mounds are a Scheduled Ancient Monument.[6]

Gallery[edit]

See also[edit]

References[edit]

  1. ^ "Mam Tor". National Trust. Retrieved 9 January 2013. 
  2. ^ Natural Curiosities of Derbyshire, in: The Every-day Book and Table Book; or, Everlasting Calendar of Popular Amusements, Sports, Pastimes, Ceremonies, Manners, Customs, and Events, Each of the Three Hundred and Sixty-Five Days, in Past and Present Times; Forming a Complete History of the Year, Months, and Seasons, and a Perpetual Key to the Almanac, Including Accounts of the Weather, Rules for Health and Conduct, Remarkable and Important Anecdotes, Facts, and Notices, in Chronology, Antiquities, Topography, Biography, Natural History, Art, Science, and General Literature; Derived from the Most Authentic Sources, and Valuable Original Communication, with Poetical Elucidations, for Daily Use and Diversion. Vol III., ed. William Hone, (London: 1838) p 11–16. Retrieved on 24 June 2008.
  3. ^ Waters, C. N. and Davies S. J. (2006) Carboniferous: extensional basins, advancing deltas and coal swamps - Chapter 9 of Brenchley, P. J. and Rawson P. F. (editors) (2006) The Geology of England and Wales, 2nd edition, London, The Geological Society
  4. ^ Cooper, R. and Jarman, D. 2007. Mam Tor, in Mass Movements in Great Britain, JNCC, 167-184
  5. ^ Waltham & Dixon (2000), Movement of the Mam Tor landslide, Derbyshire, UK, The Quarterly Journal of Engineering Geology and Hydrogeology, Volume 33, Number 2, May 2000, pp. 105–123(19)
  6. ^ Historic England. "Slight univallate hillfort and two bowl barrows on Mam Tor. (1011206)". National Heritage List for England. 

Further reading[edit]

  • Coombs, D. G.; Thompson, F.H. (1979), "Excavation of the hillfort of Mam Tor, Derbyshire", Derbyshire Archaeological Journal 99: 7–51 

External links[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Mam_Tor — Please support Wikipedia.
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445 news items

Sheffield Telegraph

Sheffield Telegraph
Thu, 21 Jan 2016 00:03:45 -0800

A cyclist enjoyed the challenge of navigating icy paths as they rode down from Mam Tor after snowfall near Edale in the Peak District. Snow also fell in Sheffield over the weekend - and it was unexpectedly heavy in parts of the city. Ringinglow Road ...

Grough

Grough
Sat, 10 Oct 2015 12:48:39 -0700

Rescuers warned hillgoers against tackling the face of a Peak District hill after a man got stuck. Edale Mountain Rescue Team said the face of Mam Tor is unstable and should be avoided. The team was called out with colleagues from Buxton on Saturday ...

Grough

Grough
Sat, 22 Aug 2015 13:27:15 -0700

Rescuers braved approaching lightning storms after a woman broke her ankle while walking in the Peak District. Edale and Buxton Mountain Rescue Teams were called out about 5pm today to Mam Tor where the walker had slipped on steep, wet muddy ...

Derbyshire Times

Derbyshire Times
Mon, 12 Oct 2015 07:03:45 -0700

A spokesman for Buxton and Edale mountain rescue teams said: “A call to someone trapped on the Mam Tor face, which is 600 feet at its highest point and vertical, is always treated with due seriousness. “The face nearer the summit consists of loose ...

The Star

The Star
Thu, 28 Jan 2016 04:45:00 -0800

He said: “I grew up discovering Mam Tor, Back Tor and Kinder Scout. I explored the whole Hope Valley – these hills and moors were my jungle! We have to remember that National Parks are not ours – they are ours to look after. We all have a ...
 
ITCM
Thu, 04 Feb 2016 07:00:00 -0800

The view from the peaks of Mam Tor and Kinder Scout extends over the entire park, even as far as Manchester in good weather. Other attractions include the picturesque valley of Dovedale and the cable car located in the southeast of the national park ...

Uttoxeter Advertiser

Uttoxeter Advertiser
Wed, 27 Jan 2016 08:52:30 -0800

AN eight-mile ramble taking in the Great Ridge in Derbyshire is being organised by Uttoxeter Walking Club. The walk, on Saturday, will include the classic circuit from Castleton. It will take in the summits of Lose Hill, Back Tor, Hollins Cross and Mam ...

Buxton Advertiser

Buxton Advertiser
Mon, 18 Jan 2016 00:37:30 -0800

Cyclists make their way up to Mam Tor after overnight snowfall near Edale in the Derbyshire Peak District. All Rights Reserved: F Stop Press Ltd. +44(0)1335 418365 +44 (0)7765 242650 www.fstoppress.com. Ice proved hazardous in places. Snake Pass was ...
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