{"id":13619,"date":"2020-02-07T13:33:43","date_gmt":"2020-02-07T13:33:43","guid":{"rendered":"https:\/\/www.bgs.ac.uk\/?post_type=case_study&#038;p=13619"},"modified":"2021-10-04T08:40:36","modified_gmt":"2021-10-04T08:40:36","slug":"mam-tor-derbyshire-landslide-case-study","status":"publish","type":"case_study","link":"https:\/\/www.bgs.ac.uk\/case-studies\/mam-tor-derbyshire-landslide-case-study\/","title":{"rendered":"Mam Tor, Derbyshire"},"content":{"rendered":"\t\t\t<section class=\"hero-section hero-section-with-social\">\n\t\t\t\t\t\t\t\t<div class=\"hero-info-wrap\">\n\t\t\t\t\t<div class=\"container\">\n\t\t\t\t\t\t<div class=\"row\">\n\t\t\t\t\t\t\t<div class=\"col-12\">\n\t\t\t\t\t\t\t\t<div class=\"hero-info\">\n\t\t\t\t\t\t\t\t\t<h1>Mam Tor, Derbyshire<\/h1>\n\t\t\t\t\t\t\t\t\t<p>Landslide case study<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n\t\t\t<div class=\"social-wrap social-wrap-inline-them\">\n\t\t\t\t<div class=\"sea-background-f\">\n\t\t\t\t\t<span>Share this article<\/span><a target=\"_blank\"  href=\"https:\/\/www.facebook.com\/sharer\/sharer.php?u=https:\/\/www.bgs.ac.uk\/case-studies\/mam-tor-derbyshire-landslide-case-study\/\"><span class=\"icon-facebook\"><span class=\"hidden\">Facebook<\/span><\/span><\/a><a target=\"_blank\"  href=\"https:\/\/twitter.com\/intent\/tweet?text=Mam%20Tor,%20Derbyshire&#038;url=https:\/\/www.bgs.ac.uk\/case-studies\/mam-tor-derbyshire-landslide-case-study\/\"><span class=\"icon-twitter\"><span class=\"hidden\">Twitter<\/span><\/span><\/a><a   onclick=\"javascript:void( (function() {var e=document.createElement('script' );e.setAttribute('type','text\/javascript' );e.setAttribute('charset','UTF-8' );e.setAttribute('src','\/\/assets.pinterest.com\/js\/pinmarklet.js?r='+Math.random()*99999999);document.body.appendChild(e)})());\"  href=\"javascript:void(0);\"><span class=\"icon-pinterest\"><span class=\"hidden\">Pinterest<\/span><\/span><\/a><a target=\"_blank\"  href=\"https:\/\/wa.me?text=https:\/\/www.bgs.ac.uk\/case-studies\/mam-tor-derbyshire-landslide-case-study\/\"><span class=\"icon-whatsapp\"><span class=\"hidden\">WhatsApp<\/span><\/span><\/a><a   href=\"mailto:?subject=Mam%20Tor,%20Derbyshire&#038;body=%20(https:\/\/www.bgs.ac.uk\/case-studies\/mam-tor-derbyshire-landslide-case-study\/)\"><span class=\"icon-mail\"><span class=\"hidden\">Email<\/span><\/span><\/a><a href=\"#\" data-copy=\"https:\/\/www.bgs.ac.uk\/case-studies\/mam-tor-derbyshire-landslide-case-study\/\" class=\"copy-url-on-click\"><span class=\"icon-link\"><span class=\"hidden\">Copy Link<\/span><\/span><\/a><\/div><\/div>\t\t\t\t\t\t\t<\/section>\n\t\t\t\n\n\n<section class=\"wp-block-bgs-blocks-content-container content-section\"><div class=\"container\"><div class=\"row\"><div class=\"col-12\">\n<p>Mam Tor is 2&nbsp;km north-west of Castleton in the Peak District, Derbyshire, where it stands between the White Peak and Dark Peak.<\/p>\n\n\n<figure  class=\"img-wrap\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/MamTor-location-150x150.jpg\" class=\"lazy-blur\" alt=\"Mam Tor, Derbyshire location map.\" data-src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/MamTor-location.jpg\" \/><figcaption class=\"caption sm-line\">\n\t\t\t\t\t<div class=\"caption-icon\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/info-caption.svg\" alt=\"Information icon\">\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"caption-text\"><p>Mam Tor, Derbyshire, location map. BGS \u00a9 UKRI.<\/p>\n<\/div>\n\t\t\t\t\t\n\t\t\t\t<\/figcaption><\/figure>\n\n\n<p>The summit of Mam Tor is ringed by the remains of the ditch and rampart of a once-great Iron Age hillfort, but it is also famous for its large landslide. The landslide is easy to access and exhibits classic, textbook landslide features so is a good landslide for geologists, geomorphologists, geographers and engineers to study. It is <a href=\"https:\/\/www.bgs.ac.uk\/geology-projects\/landslides\/national-landslide-database\/\">National Landslide Database<\/a> ID 5481\/1.<\/p>\n\n\n<figure  class=\"img-wrap\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P221452-150x150.jpg\" class=\"lazy-blur\" alt=\"The Mam Tor landslide showing the 70 m high backscarp.\" data-src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P221452.jpg\" \/><figcaption class=\"caption sm-line\">\n\t\t\t\t\t<div class=\"caption-icon\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/info-caption.svg\" alt=\"Information icon\">\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"caption-text\"><p>The Mam Tor landslide, showing the 70 m-high backscarp. BGS \u00a9 UKRI.<\/p>\n<\/div>\n\t\t\t\t\t\n\t\t\t\t<\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\">A625 Manchester to Sheffield road<\/h2>\n\n\n\n<p>The Sheffield Turnpike Company first constructed the A625 Manchester to Sheffield road in 1819 using spoil from the nearby Odin mine (National Trust, 2009) and the road crosses the main body of the landslide twice as it winds its way up the slope. The following 160 years saw constant repairs and reconstruction. In 1977, the landslide moved again and the road was restricted to single-lane traffic (Cripps and Hird, 1992). In 1979, the road was permanently closed to traffic and what remains today is an interesting example of landslide movement and repeated road reconstruction and repair.<\/p>\n\n\n\t\t\t\t<div  class=\"owl-carousel carousel-primary-color carousel owl-theme thumbs-carousel-js\">\n\t\t\t\t\t<div class=\"item\"><figure  class=\"img-wrap\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757469.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;In 1979, the the A625 road was permanently closed to traffic and what remains today is an interesting example of landslide movement and repeated road reconstruction and repair. BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_88955\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757469.jpg\" class=\"attachment-medium size-medium\" alt=\"In 1979, the the A625 road was permanently closed to traffic and what remains today is an interesting example of landslide movement and repeated road reconstruction and repair.\" \/><\/a><figcaption class=\"caption \">\n\t\t\t\t\t<div class=\"caption-icon\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/info-caption.svg\" alt=\"Information icon\">\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"caption-text\"><p>In 1979, the the A625 road was permanently closed to traffic and what remains today is an interesting example of landslide movement and repeated road reconstruction and repair. BGS \u00a9 UKRI.<\/p>\n<\/div>\n\t\t\t\t\t<div class=\"expand-box expand-box-top\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757469.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;In 1979, the the A625 road was permanently closed to traffic and what remains today is an interesting example of landslide movement and repeated road reconstruction and repair. BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_88955\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/expand.svg\" alt=\"Expand icon\"><\/a><\/div>\n\t\t\t\t<\/figcaption><\/figure><\/div><div class=\"item\"><figure  class=\"img-wrap\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757476.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_88955\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757476.jpg\" class=\"attachment-medium size-medium\" alt=\"In 1979, the the A625 road was permanently closed to traffic and what remains today is an interesting example of landslide movement and repeated road reconstruction and repair.\" \/><\/a><figcaption class=\"caption sm-line\">\n\t\t\t\t\t<div class=\"caption-icon\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/info-caption.svg\" alt=\"Information icon\">\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"caption-text\"><p>BGS \u00a9 UKRI.<\/p>\n<\/div>\n\t\t\t\t\t<div class=\"expand-box expand-box-top\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757476.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_88955\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/expand.svg\" alt=\"Expand icon\"><\/a><\/div>\n\t\t\t\t<\/figcaption><\/figure><\/div><div class=\"item\"><figure  class=\"img-wrap\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P509718.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_88955\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P509718.jpg\" class=\"attachment-medium size-medium\" alt=\"In 1979, the the A625 road was permanently closed to traffic and what remains today is an interesting example of landslide movement and repeated road reconstruction and repair.\" \/><\/a><figcaption class=\"caption sm-line\">\n\t\t\t\t\t<div class=\"caption-icon\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/info-caption.svg\" alt=\"Information icon\">\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"caption-text\"><p>BGS \u00a9 UKRI.<\/p>\n<\/div>\n\t\t\t\t\t<div class=\"expand-box expand-box-top\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P509718.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_88955\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/expand.svg\" alt=\"Expand icon\"><\/a><\/div>\n\t\t\t\t<\/figcaption><\/figure><\/div><div class=\"item\"><figure  class=\"img-wrap\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757474.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_88955\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757474.jpg\" class=\"attachment-medium size-medium\" alt=\"In 1979, the the A625 road was permanently closed to traffic and what remains today is an interesting example of landslide movement and repeated road reconstruction and repair.\" \/><\/a><figcaption class=\"caption sm-line\">\n\t\t\t\t\t<div class=\"caption-icon\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/info-caption.svg\" alt=\"Information icon\">\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"caption-text\"><p>BGS \u00a9 UKRI.<\/p>\n<\/div>\n\t\t\t\t\t<div class=\"expand-box expand-box-top\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757474.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_88955\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/expand.svg\" alt=\"Expand icon\"><\/a><\/div>\n\t\t\t\t<\/figcaption><\/figure><\/div><div class=\"item\"><figure  class=\"img-wrap\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757489.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_88955\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757489.jpg\" class=\"attachment-medium size-medium\" alt=\"In 1979, the the A625 road was permanently closed to traffic and what remains today is an interesting example of landslide movement and repeated road reconstruction and repair.\" \/><\/a><figcaption class=\"caption sm-line\">\n\t\t\t\t\t<div class=\"caption-icon\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/info-caption.svg\" alt=\"Information icon\">\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"caption-text\"><p>BGS \u00a9 UKRI.<\/p>\n<\/div>\n\t\t\t\t\t<div class=\"expand-box expand-box-top\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757489.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_88955\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/expand.svg\" alt=\"Expand icon\"><\/a><\/div>\n\t\t\t\t<\/figcaption><\/figure><\/div>\t\t\t\t<\/div>\n\t\t\t\t\n\n\n<h2 class=\"wp-block-heading\">The landslide <\/h2>\n\n\n\n<p>The landslide itself is over 4000 years old and is a rotational landslide, which has developed into a large debris flow at its toe (Waltham and Dixon, 2000). It is over 1000&nbsp;m from backscarp to toe, has a maximum thickness of 30\u201340&nbsp;m and the backscarp is over 70&nbsp;m high.<\/p>\n\n\n<figure  class=\"img-wrap\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757468.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;Mam Tor landslide. Photo taken from the debris flow looking towards the backscarp. BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_11912\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757468-150x150.jpg\" class=\"lazy-blur\" alt=\"Photograph of Mam Tor landslide taken from the debris flow looking towards the backscarp.\" data-src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757468.jpg\" \/><\/a><figcaption class=\"caption \">\n\t\t\t\t\t<div class=\"caption-icon\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/info-caption.svg\" alt=\"Information icon\">\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"caption-text\"><p>Mam Tor landslide. Photo taken from the debris flow looking towards the backscarp. BGS \u00a9 UKRI.<\/p>\n<\/div>\n\t\t\t\t\t<div class=\"expand-box expand-box-top\"><a href=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/P757468.jpg\" data-toggle=\"lightbox\" data-footer=\"&lt;p&gt;Mam Tor landslide. Photo taken from the debris flow looking towards the backscarp. BGS \u00a9 UKRI.&lt;\/p&gt;\n\" data-gallery=\"gallery_11912\"><img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/themes\/bgs\/img\/expand.svg\" alt=\"Expand icon\"><\/a><\/div>\n\t\t\t\t<\/figcaption><\/figure>\n\n\n<p>Waltham and Dixon (2000) have divided the landslide into three distinct zones (backscarp area, transition zone and debris flow) according to their structure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Backscarp area<\/h3>\n\n\n\n<p>The upper part of the slide material is a series of rock slices or blocks that were produced by the non-circular rotational failure of the original slope. Most of these slices above the upper road show little sign of current movement.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Transition zone<\/h3>\n\n\n\n<p>The central part of the slide is a transition zone, forming most of the ground between the two segments of road. It lies between the upper landslide blocks and the lower debris flow. It is composed of an unstable complex of blocks and slices, some of which can be identified by ground breaks along their margins. They overlie the steepest part of the landslide&#8217;s basal shear, which was the hillside immediately downslope of the initial failure. The upper road lies along the highest section of the transition zone, which is currently the most active part of the whole slide.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Debris flow<\/h3>\n\n\n\n<p>Disintegration of the lower part of the slipped material has created a debris flow that now forms half the total length of the slide. This is described as a flow because it moves as a plastic deformable mass, but it may also be regarded as a debris flow slide because it has a well-defined basal shear surface.<\/p>\n\n\n\n<p>The literature listed below give good accounts of this landslide in more detail.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The geology<\/h3>\n\n\n\n<p>Underlying the landslide are Dinantian limestones which are not included with the landslide (Waltham and Dixon, 2000). Overlying the limestone is the Bowland Shale Formation which consist of dark grey mudstone. The top of the landslide exposes the Mam Tor Beds. These are a sequence of turbidites of mudstones siltstones and sandstones.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Further reading<\/h2>\n\n\n\n<p>Aitkenhead, N, Barclay, W J, Brandon, A, Chadwick, R A, Chisolm, J I, Cooper, A H, and Johnson, E W. 2002. British Regional Geology: the Pennines and Adjacent Areas. Fourth Edition. (Nottingham, UK: British Geological Survey.)<\/p>\n\n\n\n<p>Arkwright, J C, Rutter, E H, and Holloway, R F. 2003. <a href=\"https:\/\/doi.org\/10.1046\/j.1365-2451.2003.00392.x\" target=\"_blank\" rel=\"noreferrer noopener\">The Mam Tor landslip: still moving after all these years<\/a>. <em>Geology Today<\/em>, Vol. 19, 59\u201364.<\/p>\n\n\n\n<p>Cripps, J C, and Hird, C C. 1992. A guide to the landslide at Mam Tor. <em>Geoscientist<\/em>, Vol.2(3), 22\u201327.<\/p>\n\n\n\n<p>Dixon, N, and Brook, E. 2007. <a href=\"https:\/\/doi.org\/10.1007\/s10346-006-0071-y\" target=\"_blank\" rel=\"noreferrer noopener\">Impact of predicted climate change on landslide reactivation: case study of Mam Tor, UK<\/a>. <em>Landslides<\/em>, Vol. 4(2), 137\u2013147.<\/p>\n\n\n\n<p>Donnelly, L J. 2006. The Mam Tor Landslide, Geology &amp; Mining Legacy around Castleton, Peak District National Park, Derbyshire, UK. In <em>Engineering Geology for Tomorrow&#8217;s Cities<\/em>. Culshaw, M G, Reeves, H, Jefferson, I, and Spink, T (editors). Proceedings of the 10th Congress of The International Association for Engineering Geology and The Environment, Nottingham, UK, 6\u201310 September 2006. Geological Society London (CD-ROM).<\/p>\n\n\n\n<p>Doornkamp, J C. 1990. Landslides in Derbyshire. <em>East Midland Geographer<\/em>, Vol. 13, 33\u201362.<\/p>\n\n\n\n<p>Rutter, E H, Arkwright, J C, Holloway, R F, and Waghorn, D. 2003. <a href=\"https:\/\/doi.org\/10.1144\/0016-764903-002\" target=\"_blank\" rel=\"noreferrer noopener\">Strains and displacements in the Mam Tor landslip, Derbyshire, England<\/a>. <em>Journal of the Geological Society of London<\/em>, Vol. 160(5), 735\u2013744.<\/p>\n\n\n\n<p>Skempton, A W, Leadbeaater, A D, and Chandler, R J. 1989. <a href=\"https:\/\/doi.org\/10.1098\/rsta.1989.0088\" target=\"_blank\" rel=\"noreferrer noopener\">The Mam Tor landslide, north Derbyshire<\/a>. <em>Philosophical Transactions of the Royal Society of London<\/em>, Vol. 329, No. 1607, 503\u2013547.<\/p>\n\n\n\n<p>Walstra, J, Dixon, N, and Chandler, J H. 2007. <a href=\"https:\/\/doi.org\/10.1144\/1470-9236\/07-011\" target=\"_blank\" rel=\"noreferrer noopener\">Historical aerial photographs for landslide assessment: two case histories<\/a>. <em>Quarterly Journal of Engineering Geology and Hydrogeology<\/em>, Vol. 40(4), 315\u2013332.<\/p>\n\n\n\n<p>Waltham, T, and Dixon, N. 2000. <a href=\"https:\/\/doi.org\/10.1144\/qjegh.33.2.105\" target=\"_blank\" rel=\"noreferrer noopener\">Movement of the Mam Tor landslide, Derbyshire, UK<\/a>. <em>Quarterly Journal of Engineering Geology and Hydrogeology<\/em>, Vol. 33(2), 105\u2013123.<\/p>\n<\/div><\/div><\/div><\/section>\n\n\n<section class=\"cta-section  sea-background-e \">\n\t<div class=\"container\">\n\t\t<div class=\"row md-row\">\n\t\t\t<div class=\"col-12\">\n\t\t\t\t<h2>Contact the Landslide Response Team<\/h2>\t\t\t\t<div>Tel: 0115 936 3143     Email: landslides@bgs.ac.uk   <\/div>\t\t\t\t<div class=\"btn-wrap\"><a href=\"mailto:landslides@bgs.ac.uk\"  class=\"button primary-background   \">Contact us<\/a><\/div>\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n<\/section>\n\t\n\n\t\t\t\t\t<section   id=\"latest-content-4221-block_5efc3d3507b5f\" class=\"grid-section  primary-background   \" >\n\t\t\t\t\t\t<div class=\"container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"row header-of-section\">\n\t\t\t\t\t\t\t\t<div class=\"col-12\">\n\t\t\t\t\t\t\t\t\t<h2>You may also be interested in<\/h2>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"row grid-wrap\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"col-lg-6 col-12\">\n\t<div class=\"cards cards-orizontal-sm  cards-find-more  cards-bordered\">\n\t\t\t\t<a href=\"https:\/\/www.bgs.ac.uk\/geology-projects\/landslides\/landslide-case-studies\/\" class=\"media-wrap\">\n\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/pennington_feature_P761259-150x150.jpg\" class=\"lazy-blur wp-post-image\" alt=\"fall at Pennington Point. (Photo: \u00a9 Eve Mathews)\" data-src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/02\/pennington_feature_P761259.jpg\" \/>\t\t\t\t\t<\/a>\n\t\t\t\t<div class=\"info-wrap\">\n\t\t\t<div class=\"info\">\n\t\t\t\t<h4><a href=\"https:\/\/www.bgs.ac.uk\/geology-projects\/landslides\/landslide-case-studies\/\">Landslide case studies<\/a><\/h4>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p>The landslides team at the BGS has studied numerous landslides. This work informs our geological maps, memoirs and sheet explanations and provides data for our National Landslide Database, which underpins much of our research.<\/p>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t<a href=\"https:\/\/www.bgs.ac.uk\/geology-projects\/landslides\/landslide-case-studies\/\">Show more<\/a>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n<div class=\"col-lg-6 col-12\">\n\t<div class=\"cards cards-orizontal-sm  cards-find-more  cards-bordered\">\n\t\t\t\t<a href=\"https:\/\/www.bgs.ac.uk\/discovering-geology\/earth-hazards\/landslides\/\" class=\"media-wrap\">\n\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/04\/debris_flow_restandbethankfulpass_P785354_feature-150x150.jpg\" class=\"lazy-blur wp-post-image\" alt=\"Debris flow on A83\" data-src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/04\/debris_flow_restandbethankfulpass_P785354_feature.jpg\" \/>\t\t\t\t\t<\/a>\n\t\t\t\t<div class=\"info-wrap\">\n\t\t\t<div class=\"info\">\n\t\t\t\t<h4><a href=\"https:\/\/www.bgs.ac.uk\/discovering-geology\/earth-hazards\/landslides\/\">Understanding landslides<\/a><\/h4>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p>What is a landslide? Why do landslides happen? How to classify a landslide. Landslides in the UK and around the world. <\/p>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t<a href=\"https:\/\/www.bgs.ac.uk\/discovering-geology\/earth-hazards\/landslides\/\">Show more<\/a>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n<div class=\"col-lg-6 col-12\">\n\t<div class=\"cards cards-orizontal-sm  cards-find-more  cards-bordered\">\n\t\t\t\t<a href=\"https:\/\/www.bgs.ac.uk\/discovering-geology\/earth-hazards\/landslides\/how-to-classify-a-landslide\/\" class=\"media-wrap\">\n\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/04\/holbeck_hall_feature-150x150.jpg\" class=\"lazy-blur wp-post-image\" alt=\"Holbeck Hall Landslide\" data-src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/04\/holbeck_hall_feature.jpg\" \/>\t\t\t\t\t<\/a>\n\t\t\t\t<div class=\"info-wrap\">\n\t\t\t<div class=\"info\">\n\t\t\t\t<h4><a href=\"https:\/\/www.bgs.ac.uk\/discovering-geology\/earth-hazards\/landslides\/how-to-classify-a-landslide\/\">How to classify a landslide<\/a><\/h4>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p>Landslides are classified by their type of movement. The four main types of movement are falls, topples, slides and flows. <\/p>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t<a href=\"https:\/\/www.bgs.ac.uk\/discovering-geology\/earth-hazards\/landslides\/how-to-classify-a-landslide\/\">Show more<\/a>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n<div class=\"col-lg-6 col-12\">\n\t<div class=\"cards cards-orizontal-sm  cards-find-more  cards-bordered\">\n\t\t\t\t<a href=\"https:\/\/www.bgs.ac.uk\/discovering-geology\/earth-hazards\/landslides\/landslides-in-the-uk-and-around-the-world\/\" class=\"media-wrap\">\n\t\t\t<img decoding=\"async\" src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/04\/Storegga_landslide_website_feature-150x150.jpg\" class=\"lazy-blur wp-post-image\" alt=\"Storegga landslide\" data-src=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/04\/Storegga_landslide_website_feature.jpg\" \/>\t\t\t\t\t<\/a>\n\t\t\t\t<div class=\"info-wrap\">\n\t\t\t<div class=\"info\">\n\t\t\t\t<h4><a href=\"https:\/\/www.bgs.ac.uk\/discovering-geology\/earth-hazards\/landslides\/landslides-in-the-uk-and-around-the-world\/\">Landslides in the UK and around the world<\/a><\/h4>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p>Landslides in the UK, around the world and under the sea.<\/p>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t<a href=\"https:\/\/www.bgs.ac.uk\/discovering-geology\/earth-hazards\/landslides\/landslides-in-the-uk-and-around-the-world\/\">Show more<\/a>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"row\">\n\t\t\t\t\t\t\t\t<div class=\"col-12\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\t\t","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":25209,"parent":0,"menu_order":19,"template":"","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"on","_relevanssi_pin_keywords":"mam tor, derbyshire","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"72123,51064,33594,50567,34185,70595","_relevanssi_noindex_reason":""},"tags":[145],"region":[8],"topic":[],"purpose":[],"area":[],"challenge":[],"challenge_topic":[],"filter_group":[],"subject":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.3 - 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