COLLABORATIVE RESEARCH: Fluvial Terraces as a Record of Long-Term Deformation of the Cascadia Forearc Olympic Mountains, Washington State

合作研究：华盛顿州卡斯卡迪亚前弧奥林匹克山长期变形记录的河流阶地

• 批准号: 9714894
• 负责人: Eric McDonald
• 金额: $ 6万
• 依托单位: Nevada System of Higher Education, Desert Research Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-06-15 至 2000-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9714894&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Fluvial; Terraces; Record

9714894 McDonald The Cascade range in Washington state is unusual because it is an actively rising range in a forearc region. Existing seismic studies have emphasized very young movements, and have shown that the local convergence is N-S. However, the longer deformation signal is not well known. This proposal will use river profiles, fluvial deposits and geomorphology to measure uplift rates in the Olympic Mountains on the scale of tens of thousands of years. This study will yield exportable results by establishing how quantitatively geomorphologic processes can be correlated with long term deformation in a tectonically active region.

9714894麦克唐纳华盛顿州的级联范围是不寻常的，因为它是一个活跃的上升范围在弧前地区。现有的地震研究强调非常年轻的运动，并表明局部会聚是南北向的。然而，较长的变形信号并不为人所知。这项提议将利用河流剖面、河流沉积和地貌来测量数万年尺度上的奥林匹克山脉的隆升速率。这项研究将通过建立定量的地貌过程如何与构造活动区的长期变形相关联来产生可输出的结果。