3 edition of Assessment of subsidence arising from gypsum dissolution (with particular reference to Ripon, North Yorkshire) found in the catalog.
Assessment of subsidence arising from gypsum dissolution (with particular reference to Ripon, North Yorkshire)
by Symonds Group on behalf of the Department of the Environment in East Grinstead
Written in English
|Statement||A. Thompson...[et al.].|
|Series||DOE research contract -- MPO613|
|Contributions||Thompson, A., Great Britain. Department of the Environment., Symonds Travers Morgan.|
Environmental Impacts of Land Subsidence in Urban Areas of Indonesia () Hasanuddin Z. Abidin, H. Andreas, I. Gumilar, T.P. Sidiq, M. Gamal FIG Working Week From the Wisdom of the Ages to the Challenges of the Modern World Sofia, Bulgaria, May 1/12 Environmental Impacts of Land Subsidence in Urban Areas of Indonesia. Gypsum content is usually used to estimate subsidence of these soils. However, a number of water-soluble minerals may occur in association with gypsum in gypsiferous soils. Thus, subsidence should be attributed to the dissolution and removal of both gypsum and other water-soluble minerals in soils.
Land subsidence is a gradual settling or sudden sinking of the Earth's surface owing to subsurface movement of earth materials. Subsidence is a global problem and, in the United States, more t square miles in 45 States, an area roughly the size of New Hampshire and Vermont combined, have been directly affected by subsidence. in gypsum terrain and associated environmental problems in NE Spain. Environmental Geology, Vol. 25, Cooper, A.H., Subsidence resulting from the dissolution of Permian gypsum in the Ripon area; its. relevance to mining and water abstraction. In: Bell FG, Culshaw MG, Cripps JC, Lovell MA (eds) Engineering. geology of underground Cited by: 1.
Studying gypsum can help unravel palaeoclimate and palaeogeographic conditions (Lugli, , Lu et al., ) in addition to revealing the processes of mineralization and dissolution. The atomic structure of gypsum (space group C2/c) may be regarded as repeating units of Ca and SO 4 layers perpendicular to the b-axis, with each individual unit Cited by: Boreholes or underground mines may enable (either intentionally or inadvertently) unsaturated water to flow through or against the salt deposits, thus allowing development of small to large dissolution cavities. If the dissolution cavity is large enough and shallow enough, successive roof failures can cause land subsidence or catastrophic collapse.
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Assessment of Subsidence Arising from Gypsum Dissolution (with Particular Reference to Ripon, North Yorkshire): Summary Report DOE research contract: Contributors: A. Thompson, Symonds Travers Morgan, Great Britain.
Department of the Environment: Publisher: Symonds Group, ISBN:Export Citation: BiBTeX EndNote. Assessment of subsidence arising from gypsum dissolution (with particular reference to Ripon, North Yorkshire): summary report.
Assessment of subsidence arising from gypsum dissolution (with particular reference to Ripon, North Yorkshire) by A. Thompson,Symonds Group on behalf of the Department of the Environment edition, in English.
to the DofE: 'Assessment of Subsidence Activity Arising from Gypsum Dissolution (with particular reference to Ripon)' The map is intended to be used only as a general guide andFile Size: 2MB. At 20°C and 1 atm, the solubility of CaCO 3 is g L −1, but the solubility of the CaO is g L − 1 (Plummer and Busenberg, ;Sullivan et al., ;Baltakys and Prichockiene, ).
Gypsum dissolution and gypsum karst Gypsum diss olves readily i n flowing wa ter, whic h next to ri vers can be at a rate about times faster than that seen for limestone disso lution.
Subsidence: Dissolution & Human Related Causes Subsidence hazards involve either the sudden collapse of the ground to form a depression or the slow subsidence or compaction of the sediments near the Earth's surface.
Sudden collapse and gypsum deposits, both of which easily dissolve in groundwater. Subsidence hazards due to the dissolution of Permian gypsum in England: investigation and remediation. in Beck, F.B. (ed.) Karst Geohazards: engineering and environmental problems in karst terrane. Proceedings of the fifth multidiciplinary conference on sinkholes and the engineering and enviromnental impacts of karst Gatlinburg/Tennessee.
gypsum dissolution will form caves (Ryder & Cooper, ) and fast flowing water in them may remove up to to 1 m of gypsum per annum from the cave walls. In England, Ripon suffers the worst subsidence caused by gypsum dissolution. Here at least 30 major collapses have occurred in the past years and further collapses might be expectedFile Size: KB.
Development in Ripon Clearly, the presence of unstable ground can have a profound effect on the development of an area such as Ripon.
The city now has a planning zonation to take account of the gypsum subsidence problems. Gypsum dissolves by a simple two phase dissociation (solid and solvent): Gypsum, like CaC03 and salt, dissolves reversibly, but anhydrite does not. When anhydrite is dissolved it forms a solution of calcium sulphate which, at common temperatures and pressures, is in equilibrium with the solid phase of gypsum, but not with anhydrite.
This study includes natural hazards and environmental problems caused by gypsum on and near the soil, water, and structures. These are karst-specific deformations (caves, fractures, cracks) naturally occurring in gypsum areas, and the problems of salinization, corrosion, erosion, soil and water pollution that occur as a result of dissolution caused by the contact of gypsum with : Sevda Özel.
Subsidence: Dissolution & Human Related Causes Surface Subsidence and Collapse Sudden collapse events are rarely major disasters, certainly not anywhere near the scale of the earthquake, volcanic, tsunami, or landslide disasters, but the slow subsidence of areas can cause as much economic damage, although spread out over a longer period of time.
) (Figure 1). The area is prone to subsidence and sinkhole formation caused by the dissolution of the gypsum and the evolution of gypsum cave systems beneath the area.
Some places are more susceptible than others and these tend to be where partly in-filled or buried valleys cut through the sequence allowing enhanced water flow. dissolution of soluble bedrock takes place along vertical and horizontal fracture creating a cavern 2. dissolution continues to enlarge the caves which become caverns with roofs partly supported by ground water 3.
subsequent lowering of the water table leaves the cave/cavern roof unsupported and the cavern roof collapses forming a sinkhole. These can include subsidence caused by natural dissolution, gypsum-polluted groundwater, subsidence caused by the abstraction of groundwater, and hazardous coal-mining conditions.
In addition to these hazards, the location of dams on gypsum is particularly dangerous; leakage and dissolution of gypsum can cause dams to fail catastrophically. Department of the Environment (): Planning Policy Guidance: Development on Unstable Land (PPG 14).
HMSO (25pp) A. Thompson, P. Hine, J. Greig, and D. Peach (): Assessment of Subsidence Arising from Gypsum Dissolution (with particular reference to Ripon, North Yorkshire). Abstract. The kinetics of dissolution of different lithological varieties of gypsum was experimentally investigated at 5–25°C and P = MPa, and a simple rate model was proposed on the basis of the sum of the rates of forward and backward reactions and proportionality to the activity product of calcium and sulfate ions.
The activation energies of the Cited by: 9. Identify and document relationships of gypsum dissolution and ground subsidence to gypsum origins, forms and locations in landforms.
(Applications / Soil Interpretations) Investigate relationships of gypsum to other salts and metals. (Other soluble salts) Identify and compare existing occurrence models of gypsum with patterns and processes.
National Gypsum has more than 40 operations in the USA and Canada. ASSESSMENT OF SUBSIDENCE ARISING FROM GYPSUM DISSOLUTION. INTRODUCTION – SUBSIDENCE IN RIPON. Gypsum in the Permian rocks of the Ripon area was originally precipitated from warm, shallow sea water.
As it became buried by younger rocks, gypsum dehydrated and formed. An Interdisciplinary Response to Mine Water Challenges - Sui, Sun & Wang (eds) © China University of Mining and Technology Press, Xuzhou, ISBN Numerical Model for Assessment of Subsidence due to Dissolution of.
Abstract. Evaporites, including gypsum (or anhydrite) and salt, are the most soluble of common rocks; they are dissolved readily to form the same type of karst features that typically are found in limestones and dolomites, and their dissolution can locally result in major subsidence by: Subsidence is associated with the dissolution of what three types or rocks?
Limestone, marble, gypsum. What are the 5 causes of subsidence? Thawing of frozen ground, deflation of magma chamber, earthquakes, compaction of soil, shrinking of expansive soil.