Tectonic History of the Newfoundland Margin in the Newfoundland-Iberia Rift

纽芬兰-伊比利亚裂谷纽芬兰边缘的构造历史

• 批准号: 9633154
• 负责人: Brian Tucholke
• 金额: $ 25万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-01 至 2000-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9633154&HistoricalAwards=false
• 关键词: Tectonic; History; Newfoundland; Margin; Iberia

9633154 Tucholke These investigators from Woods Hole Oceanographic Institution in Massachusetts will study existing oil industry and academic geophysical data and well samples to understand the history of the early opening of the North Atlantic Ocean. They will emphasize the conjugate rifted margins of Newfoundland and Iberia. Their specific study will focus on the Newfoundland margin, and specifically on the rift basins along the preimeter of the Grand Banks. They will analyze the character and structural variability of basement, along-strike segmentation of the rift, the magnitude, timing and spatial distribution of extension in each rift segment by means of seismic-sequence analysis, and they hope to establish timing of initial seafloor spreading and the location of the continent-ocean boundary on this margin. They will model the margin rift history, using their data as constraints, and they will integrate these data with similar work ongoing on the Iberia margin which includes ocean drilling. One expected outcome of this work will be the identification of appropriate drilling sites on the Newfoundland margin to test hypotheses regarding rifting history of the conjugate pair of Newfoundland and Iberia. ***

来自马萨诸塞州伍兹霍尔海洋研究所的这些调查人员将研究现有的石油工业和学术地球物理数据以及井样，以了解北大西洋早期开放的历史。他们将强调纽芬兰和伊比利亚的共轭裂谷边缘。他们的具体研究将集中在纽芬兰边缘，特别是沿着大浅滩上游的裂谷盆地。他们将通过地震序列分析，分析基底的特征和构造变异性，裂谷的沿走向分段，裂谷各段的伸展幅度、时间和空间分布，并希望确定海底最初扩张的时间和大陆-海洋边界在这一边缘的位置。他们将利用他们的数据作为约束条件，对边缘裂谷历史进行建模，并将这些数据与正在伊比利亚边缘进行的类似工作（包括海洋钻探）相结合。这项工作的一个预期结果将是在纽芬兰边缘确定合适的钻井地点，以测试有关纽芬兰和伊比利亚共轭对裂谷历史的假设。＊＊＊