Natural and anthropogenic halite karst subsidence in north Cheshire, UK; comparison of Rostherne Mere, Melchett Mere, Tatton Mere and their surroundings

IF 1.3 4区 工程技术 Q3 ENGINEERING, GEOLOGICAL Quarterly Journal of Engineering Geology and Hydrogeology Pub Date : 2022-09-27 DOI:10.1144/qjegh2022-081
C. Serridge, A. Cooper
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引用次数: 1

Abstract

Most of the north Cheshire - Knutsford Group - of meres (lakes) in the UK formed naturally by dissolution of Triassic halite after the Devensian glaciation. Anthropogenic brine extraction in the 19 th and 20 th Centuries produced further subsidence that enlarged some meres and formed the new lake of Melchett Mere. The characteristic features of three meres, Rostherne, Melchett and Tatton are compared here by historical surveys, maps, photographs and LiDAR interpretations. These illustrate the similarities of the natural and anthropogenic subsidence features, which can only be separated by temporal evidence of their formation. Rostherne Mere and Tatton Mere are mainly natural, though deepened or made larger by anthropogenic salt dissolution; Melchett Mere is completely anthropogenic and mainly formed between 1927 and 2003. All three meres are surrounded by landslip scars related to the subsidence. Former brine pumping at Northwich, Plumley and possibly Agden is implicated in the formation of Melchett Mere and the reactivation of natural subsidence at Rostherne and Tatton meres plus The Mere along with Tabley, Pickmere and Budworth meres to the south west. The brine run linkages between these abstraction areas and the subsidence crosses the route of the proposed HS2 railway.
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英国柴郡北部天然和人为岩盐岩溶沉降Rostherne Mere, Melchett Mere, Tatton Mere和他们周围环境的比较
英国柴郡北部的大部分meres(湖泊)——Knutsford群——是由德文西冰川作用后三叠纪岩盐的溶解自然形成的。19世纪和20世纪的人为盐水开采产生了进一步的沉降,扩大了一些meres,并形成了新的Melchett Mere湖。通过历史调查、地图、照片和激光雷达的解释,对Rostherne、Melchett和Tatton三个mere的特征进行了比较。这些说明了自然沉降和人为沉降特征的相似性,只能通过其形成的时间证据来区分。Rostherne Mere和Tatton Mere主要是天然的,尽管由于人为的盐溶解而加深或变大;Melchett-Mere完全是人为活动,主要形成于1927年至2003年之间。这三个地方都被与沉降有关的山体滑坡疤痕所包围。Northwich、Plumley和可能的Agden的前盐水泵与Melchett Mere的形成以及Rostherne和Tatton meres以及the Mere以及西南部的Tabley、Pickmere和Budworth meres的自然沉降的重新激活有关。这些提取区和沉降之间的盐水流动连接穿过拟建HS2铁路的路线。
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来源期刊
CiteScore
3.40
自引率
14.30%
发文量
66
审稿时长
6 months
期刊介绍: Quarterly Journal of Engineering Geology and Hydrogeology is owned by the Geological Society of London and published by the Geological Society Publishing House. Quarterly Journal of Engineering Geology & Hydrogeology (QJEGH) is an established peer reviewed international journal featuring papers on geology as applied to civil engineering mining practice and water resources. Papers are invited from, and about, all areas of the world on engineering geology and hydrogeology topics. This includes but is not limited to: applied geophysics, engineering geomorphology, environmental geology, hydrogeology, groundwater quality, ground source heat, contaminated land, waste management, land use planning, geotechnics, rock mechanics, geomaterials and geological hazards. The journal publishes the prestigious Glossop and Ineson lectures, research papers, case studies, review articles, technical notes, photographic features, thematic sets, discussion papers, editorial opinion and book reviews.
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