Crustal architecture and evolution of the conjugate volcanic margins off mid-Norway and East Greenland in a total rift context

全裂谷背景下挪威中部和东格陵兰岛共轭火山边缘的地壳结构和演化

• 批准号: 5395153
• 负责人: Professor Dr. Wilfried Jokat
• 金额: --
• 依托单位: Sektion Geophysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2003
• 资助国家: 德国
• 起止时间: 2002-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5395153?language=en
• 关键词: Crustal; architecture; evolution; conjugate; volcanic

Integrated studies of conjugate rifted continental margins are essential for a better understanding of the fundamental processes responsible for the breakup and separation of lithospheric plates. We propose to study the conjugate volcanic margins off mid-Norway and East Greenland to establish the crustal architecture that provides key constraints for the understanding of the processes and the temporal sequence of events involved in volcanic margin formation and evolution. By using the existing databases and collect new 2D regional deep seismic data off mid-Norway and East Greenland in addition to a detailed 3D survey on the East Greenland margin we will focus on: (1) Crustal and uppermost mantle architecture, (2) tectonic and magnetic interplays and styles prior to, during and subsequent to breakup, (3) regional extension and magmatism, including estimates of volume and rates, (4) alongstrike segmentation, magmatic and tectonic (a)symmetry, structural inheritance, and (5) interplay of sedimentation, magmatism and vertical motion.

共轭裂谷大陆边缘的综合研究对于更好地理解岩石圈板块破裂和分离的基本过程至关重要。我们建议研究挪威中部和格陵兰岛东部的共轭火山边缘，以建立地壳结构，为理解火山边缘形成和演化所涉及的过程和事件的时间顺序提供关键约束。通过使用现有数据库并收集挪威中部和东格陵兰岛附近新的 2D 区域深部地震数据，以及对东格陵兰边缘进行详细的 3D 勘测，我们将重点关注：(1) 地壳和上地幔结构，(2) 构造以及分裂之前、期间和之后的磁相互作用和样式，(3) 区域扩张和岩浆作用，包括体积和速率的估计，(4) 沿走向分割、岩浆和构造(a)对称性、结构继承性，以及(5)沉积、岩浆作用和垂直运动的相互作用。

项目成果

Continent-ocean transition and voluminous magmatic underplating derived from P-wave velocity modelling of the East Greenland continental margin

• DOI: 10.1111/j.1365-246x.2007.03438.x
• 发表时间: 2007-08
• 期刊: Geophysical Journal International
• 影响因子: 2.8
• 作者: M. Voss;W. Jokat