Geological and geomorphological characterisation of West Cumbria

西坎布里亚郡的地质和地貌特征

• 批准号: 2444434
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2444434
• 关键词: Geological; geomorphological; characterisation; West; Cumbria

It is known that the western Cumbria region was affected by different glacial phases in the Quaternary. During the last British and Irish Ice Sheet (BIIS) the area was drained by numerous ice streams, it was affected by the passage of the fast-flowing Irish Sea Ice Stream (ISIS) and possibly by localised ice advances from the Lake District. Despite recent efforts to better depict the last BIIS phases of advance/retreat, its glacial stratigraphy and geomorphological signature, there is still debate on the glacial evolution of western Cumbria and the understanding of the geology of this coastal region. The aim of this PhD is to expand the work so far undertaken along the west Cumbrian and to integrate this geological and geomorphological understanding with the correct knowledge of process-sediment/form relationships, understanding of former climate and environmental change history, and glacial dynamics into a regional Quaternary geological model to collectively support nuclear licensed sites in this area. This project will define assessment approaches, including need for quality control of historical intrusive and geophysics datasets and define diagnostic criteria for superficial deposit types and geomorphology that may be present in the region to support latter geological and geomorphological interpretations. Geomorphological and section logging fieldwork will take place based on initial geomorphological regional map identifying potential areas of complexity/high significance to events suggested by the map. Work will enable the further development of the regional geomorphological map with assessment of sediment assemblages identified from regional borehole records and section logging and identify appropriate sediment-landform assemblages. This understanding will be extrapolated across the geomorphological map. The aim of this work will be to attempt to extrapolate three-dimensional geological surfaces from the ground models of the licensed sites into the wider area. This project falls within the EPSRC Energy research area, and specifically within the Nuclear Fission theme, as it relates to the long term evolution of two of the UK's nuclear Site Licence Companies: the Low Level Waste Repository and Sellafield, in West Cumbria. The project will further existing research into the Quaternary geology of West Cumbria. The project is also likely to have relevance to the EPSRC research areas pertaining to climate change, as it will also focus on the geomorphology of the area with respect to effects of sea-level change.

众所周知，西坎布里亚地区在第四纪受到不同冰期的影响。在最后一次英国和爱尔兰冰盖（BIIS）期间，该地区被许多冰流排干，它受到快速流动的爱尔兰海冰流（ISIS）的影响，并可能受到来自湖区的局部冰的影响。尽管最近的努力，以更好地描绘最后的BIIS阶段的前进/后退，其冰川地层和地貌签名，仍然有争论的冰川演变的西坎布里亚郡和理解地质的沿海地区。这个博士学位的目的是扩大迄今为止开展的工作沿着西坎布里亚和整合这种地质和地貌的理解与过程沉积物/形式关系的正确知识，前气候和环境变化历史的理解，并冰川动态到一个区域第四纪地质模型，共同支持核许可网站在这方面。该项目将确定评估方法，包括需要对历史侵入和地球物理数据集进行质量控制，并确定该区域可能存在的表层存款类型和地貌的诊断标准，以支持后期的地质和地貌解释。地貌和剖面测井野外工作将根据初始地貌区域图进行，确定地图所示事件的潜在复杂/重要区域。这项工作将有助于进一步绘制区域地貌图，评估从区域钻孔记录和剖面记录中确定的沉积物组合，并确定适当的沉积物-地貌组合。这种理解将在整个地貌图上进行外推。这项工作的目的将是试图从许可地点的地面模型推断出更广泛地区的三维地质表面。该项目福尔斯属于EPSRC能源研究领域，特别是核裂变主题，因为它涉及英国两家核场地许可证公司的长期发展：西坎布里亚郡的低放废物储存库和塞拉菲尔德。该项目将进一步研究西坎布里亚郡的第四纪地质。该项目还可能与环境和战略研究中心有关气候变化的研究领域有关，因为它还将侧重于该地区与海平面变化影响有关的地貌。