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首页> 外文学位 >The micromorphology of paleoseismic soft sediment deformation structures in glacial deposits from three sample sites in Scotland.
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The micromorphology of paleoseismic soft sediment deformation structures in glacial deposits from three sample sites in Scotland.

机译：来自苏格兰三个采样点的冰川沉积物中古地震软沉积物变形结构的微观形态。

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摘要

The nature of this research is to investigate paleoseismic deformation of glacial soft sediments from three sampling sites throughout the Scottish Highlands; Arrat's Mills, Meikleour and Glen Roy. The paleoseismic evidence investigated in this research will provide a basis for applying criteria to soft sediment deformation structures, and the trigger mechanisms that create these structures. Micromorphology is the tool used in this to investigate paleoseismic deformation structures in thin section. Thin section analysis, (micromorphology) of glacial sediments from the three sampling sites is used to determine microscale evidence of past earthquakes that can be correlated to modern-day events and possibly lead to a better understanding of the impact of earthquakes throughout a range of sediment types. The significance of the three sampling locations is their proximity to two major active fault zones that cross Scotland. The fault zones are the Highland Boundary Fault and the Great Glen Fault, these two major faults that parallel each other and divide the country in half. Sims (1975) used a set of seven criteria that identified soft sediment deformation structures created by a magnitude six earthquake in California. Using criteria set forth by Sims (1975), the paleoseismic evidence can be correlated to the magnitude of the deformation structures found in the glacial sediments. This research determined that the microstructures at Arrat's Mill, Meikleour and Glen Roy are consistent with a seismically induced origin. It has also been demonstrated that, even without the presence of macro structures, the use of micromorphology techniques in detecting such activity within sediments is of immense value.
机译：这项研究的本质是调查整个苏格兰高地三个采样点的冰川软沉积物的古震变形；阿拉特的米尔斯，梅克尔和格兰·罗伊在这项研究中调查的古地震证据将为将标准应用于软沉积物变形结构提供依据，并为形成这些结构的触发机制提供依据。微观形态学是用于研究薄截面古地震变形结构的工具。薄层分析（来自三个采样点的冰川沉积物的微观形态）用于确定过去地震的微观证据，这些证据可能与现代事件相关，并可能导致人们更好地了解地震对一系列沉积物的影响类型。这三个采样点的意义在于它们靠近穿越苏格兰的两个主要活动断层带。断层带是高地边界断层和大格伦断层，这两个主要断层相互平行，将整个国家分为两半。 Sims（1975）使用了七个标准，确定了加利福尼亚六级地震造成的软沉积物变形结构。使用Sims（1975）提出的标准，古地震证据可以与冰川沉积物中发现的变形结构的大小相关。这项研究确定了Arrat's Mill，Meikleour和Glen Roy的微观结构与地震诱发的起源是一致的。还已经证明，即使不存在宏观结构，使用微形态学技术检测沉积物中的这种活性也具有巨大的价值。

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  • 作者

    Taylor, John Michael.;

  • 作者单位

    Brock University (Canada).;

  • 授予单位 Brock University (Canada).;
  • 学科 Geology.; Agriculture Soil Science.
  • 学位 M.Sc.
  • 年度 2005
  • 页码 127 p.
  • 总页数 127
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地质学;土壤学;
  • 关键词

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