REU: Late Neogene Faulting and Tectonic Evolution: A Studyof Forearc Plate Margin Settings in New Zealand and California

REU：新近纪晚期断层和构造演化：新西兰和加利福尼亚弧前板块边缘设置的研究

• 批准号: 8617747
• 负责人: Harvey Kelsey
• 金额: $ 10.43万
• 依托单位: Western Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-09-15 至 1990-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8617747&HistoricalAwards=false
• 关键词: REU; Late; Neogene; Faulting; Tectonic

A cooperative investigation will be undertaken with New Zealand scientists to better understand the changing nature of deformation across the exposed, subaerial portion of the forearc region of the eastern portion of the North Island of New Zealand and compare these findings with data from a similar tectonic setting in California. The New Zealand study area will be a transect from Hawkes Bay westward to the Ruahine Range. California study sites will be along faults of the San Andreas fault zone to the east and north of Cape Mendocino. Specific investigative techniques include detailed mapping of selected fault segments and analysis of fault-related fractures to determine fault style, strain ratios, and axes of principal strain. Results will further the understanding of the spatial distribution of strain across the forearc region in such settings. Mapping may also identify additional active faults in this moderately populated part of New Zealand. Findings will perhaps add further insight into deformation associated with northward migration of the San Andreas Transform Zone in California.

将与新西兰进行合作调查 科学家们更好地了解变形的变化性质， 在整个暴露的，subaireal部分的前弧区的 新西兰北岛的东部，并比较这些 这些发现与来自加州类似构造环境的数据相吻合。 的 新西兰的研究区域将是从霍克斯湾向西到 鲁阿辛山脉加州的研究地点将沿着 圣安德烈亚斯断层带位于门多西诺角的东部和北部。 具体的调查技术包括详细绘制选定的 断层段和断层相关裂缝的分析， 断层样式、应变比和主应变轴。 结果将 进一步了解应变的空间分布 在这种情况下的前弧区。 映射还可以识别 在这个人口适度的部分新的活动断层 缤客 这些发现也许会进一步加深对变形的认识 与圣安德烈亚斯转换区向北迁移有关， 加州。