Coastal Chalk Cliff Instability (Geological Society by R. N. Mortimore, A. Duperret

By R. N. Mortimore, A. Duperret

Many of the rocky coastlines worldwide are topic to energetic erosion strategies. as a result of the starting to be probability to neighborhood groups from coastal cliff retreat, it's important to enquire the place, whilst and the way cliffs cave in. the result of those experiences are very important for the planners and native experts chargeable for defense and entry to cliffs and seashores. This quantity makes a speciality of the coastal chalk cliffs of the English Channel, the place a multidisciplinary method has been used to appreciate energetic coastal cliff recession. The e-book is prepared round 3 major issues: the geological elements controlling cliff instability, the marine parameters influencing coastal erosion and using a few new instruments for probability exams. This ebook may be of use to teachers and pros engaged on rocky shorelines, with an curiosity in sedimentary geology, stratigraphy, tectonics, geomorphology, engineering geology, coastal engineering and GIS. additionally on hand: construction Stone Decay: From analysis to Conservation - exact ebook no 271 - ISBN 1862392188 Mapping in Engineering Geology (Key concerns in Earth Sciences) - ISBN 1862391017 The Geological Society of LondonFounded in 1807, the Geological Society of London is the oldest geological society on the planet, and one of many biggest publishers within the Earth sciences.The Society publishes quite a lot of high quality peer-reviewed titles for lecturers and execs operating within the geosciences, and enjoys an enviable foreign acceptance for the standard of its work.The many components during which we submit in include:-Petroleum geology-Tectonics, structural geology and geodynamics-Stratigraphy, sedimentology and paleontology-Volcanology, magmatic stories and geochemistry-Remote sensing-History of geology-Regional geology publications

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Extra info for Coastal Chalk Cliff Instability (Geological Society Engineering Geology Special Publication No. 20)

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17) illustrated the scale of failures that can occur even where cliffs are protected. These failures ranged from joint controlled failures at Peacehaven Cliffs and Black Rock to the mud-slides and ravelling of the cliff at Newhaven and Black Rock respectively. Major cliff collapses at Beachy Head in 1960 and 1999-2001 (Fig. 14) show a close relationship with rainfall data for Eastbourne (Fig. 17). Marine erosion and weathering due to rainfall, frost and storms will influence the rate at which a particular hazard develops.

Newhaven 30-60 10-25 after heavy rain irregular 1-6 UGS, Upper Greensand; WMMC, West Melbury Marly Chalk; ZZC, Zig Zag Chalk; PM, Plenus Marls; HNC, Holywell Nodular Chalk; NPC, New Pit Chalk; LNC, Lewes Nodular Chalk; SC, Seaford Chalk; NC, Newhaven Chalk; CC, Culver Chalk: Pal, Palaeogene; SST, Seven Sisters Type; BCC, Big Cliff Collapse Discussion In this paper the hazards related to cliff stability along the coast of Sussex between Eastbourne and Brighton have been identified and partially quantified (Table 5).

The cycle of cliff decay is different in the section between Splash Point and the old timber groyne compared to Seaford Chalk sections such as the Seven Sisters and much of Seaford Head. Following cliff failure along one of the major inclined shear fractures, erosion eventually breaks through the frac- ture surface and only minor spalling occurs for a while (may be a number of years). Eventually, another major inclined fracture daylights in the cliff face and continued erosion and weathering leads to another major plane or wedge failure.

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