North Atlantic rifting and evolution of the passive continental margins of the Pearya Terrane/Ellesmere Island (NE Canada) and Svalbard - Field work and sampling

北大西洋裂谷和皮尔亚地体/埃尔斯米尔岛（加拿大东北部）和斯瓦尔巴群岛被动大陆边缘的演化 - 实地工作和采样

• 批准号: 92281131
• 负责人: Professor Dr. Frank Lisker
• 金额: --
• 依托单位: Fachgebiet Geodynamik der Polargebiete
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/92281131?language=en
• 关键词: North; Atlantic; rifting; evolution; passive

This proposal applies for a travel grant to participating on the CASE 11 (Circum Arctic Structural Events) Expedition of the BGR to the Pearya Terrane of Ellesmere Island (NE Canada). Pearya is situated in a crucial position within the Arctic region since it defines the central locus between Svalbard/ Europe, Greenland and main Ellesmere Island/ North America before Pangea breakup, and therefore represents a key for our understanding of the opening of the North Atlantic Ocean. Field work and sampling carried out during CASE 11 will provide the basis for subsequent thermochronological and thermal methods, such as apatite fission track (FT), U/Th-He, clay mineral and vitrinite reflectance (VR) analyses, and terrestrial in situ cosmogenic nuclide (TCN) analysis. The principle aim of the subsequent research is to investigate the Phanerozoic shallow crustal dynamics and long-term landscape evolution of the Pearya Terrane, with four specific objectives: (a) pre-breakup reconstruction of the Arctic region within Pangea, (b) Eurekan tectonism on Ellesmere Island, (c) passive margin development of northern Ellesmere Island, and (d) the regional interplay between climate, tectonics and lithology, and climatic implications.

该提案适用于参加 BGR 到埃尔斯米尔岛（加拿大东北部）皮尔亚地体的 CASE 11（环北极结构事件）探险活动的旅费补助。皮尔亚岛位于北极地区的重要位置，因为它定义了盘古大陆分裂之前斯瓦尔巴群岛/欧洲、格陵兰岛和主要埃尔斯米尔岛/北美之间的中心地点，因此代表了我们了解北大西洋开放的关键。 CASE 11期间进行的现场工作和采样将为后续的热年代学和热方法提供基础，例如磷灰石裂变径迹（FT）、U/Th-He、粘土矿物和镜质体反射率（VR）分析以及陆地原位宇宙成因分析核素（TCN）分析。后续研究的主要目的是研究显生宙浅地地壳动力学和皮尔亚地体的长期地貌演化，有四个具体目标：（a）盘古大陆北极地区破碎前的重建，（b）尤里卡构造运动埃尔斯米尔岛，(c) 埃尔斯米尔岛北部的被动边缘发育，以及 (d) 气候、构造和岩性之间的区域相互作用以及气候影响。