Accomplishment Based Renewal: Tectonic and Sedimentary Evolution of the Newfoundland Margin in the Newfoundland-Iberia Rift

基于成就的更新：纽芬兰-伊比利亚裂谷纽芬兰边缘的构造和沉积演化

• 批准号: 0647035
• 负责人: Brian Tucholke
• 金额: $ 27.25万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-04-01 至 2010-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0647035&HistoricalAwards=false
• 关键词: Accomplishment; Based; Renewal; Tectonic; Sedimentary

The Newfoundland-Iberia rift system is type locality of a non-volcanic rift. Although it has been studied extensively, fundamental questions remain about the duration, episodicity and spatial distribution of extension; their relationship to thinning/brekaup of the continental crust, exhumation/breaching of the subcontinental mantle lithosphere and onset of normal seafloor spreading. The spatial and temporal roles of pure shear vs. simple shear extension and the nature of post-rift magmatism also remain unclear. Through an ABR award the PI plans to analyze a broad set of academic and industrial seismic, GIS and stratigraphic data to better constrain the episodes of extension, the symmetry of the conjugate margins, identify possible post-rift magmatic intrusions and document the architecture of the basement.The broader impacts of the study will include the training of a female post doctoral fellow and summer students. Then study will provide a state-of-the-art synthesis of the Newfoundland-Iberia rift system of broad interest to the geological community and may provide a framework for future IODP drilling of the rift system.

纽芬兰-伊比利亚裂谷系为典型的非火山裂谷。尽管已经进行了广泛的研究，但基本问题仍然是：伸展的持续时间、幕式和空间分布；它们与大陆地壳变薄/破裂、次大陆地幔岩石圈折返/破裂以及正常海底扩张的开始的关系。纯剪切与简单剪切伸展在空间和时间上的作用以及裂谷后岩浆作用的性质也仍然不清楚。通过ABR奖，PI计划分析一系列广泛的学术和工业地震、地理信息系统和地层学数据，以更好地限制伸展事件、共轭边缘的对称性，识别可能的裂谷后岩浆侵入并记录基地的建筑。这项研究的更广泛影响将包括培训一名女性博士后研究员和暑期学生。然后，研究将提供地质界广泛感兴趣的纽芬兰-伊比利亚裂谷系统的最新综合，并可能为未来对裂谷系统的IODP钻探提供框架。