The sedimentary record of ancient glaciations in tectonically-active basins

构造活动盆地古冰川作用的沉积记录

• 批准号: 261613-2008
• 负责人: Arnaud, Emmanuelle
• 金额: $ 1.53万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=456025
• 关键词: sedimentary; record; ancient; glaciations; tectonically

My objective is to examine ancient glacial sedimentary rocks exposed in Canada and Alaska in order to better understand the nature of climate change during the Neoproterozoic and Cenozoic time periods. Changes in rock characteristics (physical and chemical properties) will be analysed to determine the environmental conditions that existed at that time. This research will focus particularly on distinguishing between evidence of climate change and evidence of tectonic activity as these two factors can leave very similar 'signatures' in the geologic record. In addition, I will examine glacial deposits of Quaternary age in the Waterloo and Oak Ridges moraines of southern Ontario in order to study the types of features left by deformation near an ice margin. This will in turn help to evaluate the significance of deformation features observed in ancient glacial deposits elsewhere.

我的目标是研究在加拿大和阿拉斯加发现的古冰川沉积岩，以便更好地了解新元古代和新生代时期气候变化的性质。将对岩石特征(物理和化学性质)的变化进行分析，以确定当时存在的环境条件。这项研究将特别侧重于区分气候变化的证据和构造活动的证据，因为这两个因素可能会在地质记录中留下非常相似的“特征”。此外，我将研究安大略省南部滑铁卢和橡树岭冰原的第四纪冰川沉积，以研究冰缘附近变形留下的特征类型。这反过来将有助于评估在其他地方的古冰川沉积物中观察到的变形特征的重要性。