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

这项提议适用于参加案例11(环北极构造事件)的BGR考察队到埃尔斯米尔岛(加拿大东北部)的Pearya Terrane的旅费。皮利亚在北冰洋地区处于至关重要的位置，因为它确定了泛古大陆解体前斯瓦尔巴群岛/欧洲、格陵兰和主要埃尔斯米尔岛/北美之间的中心位置，因此是我们理解北大西洋开放的关键。在案例11期间进行的实地工作和取样将为随后的热年代学和热学方法提供基础，例如磷灰石裂变径迹(FT)、U/Th-He、粘土矿物和镜质组反射率(VR)分析以及陆地原位宇宙核素(TCN)分析。其后研究的主要目的是调查Pearya Terrane显生宙浅层地壳动力学和长期地貌演变，其具体目标有四个：(A)盘古大陆内北极地区解体前的重建；(B)埃尔斯米尔岛上的尤里坎构造作用；(C)埃尔斯米尔岛北部被动边缘的发展；(D)气候、构造、岩性和气候影响之间的区域相互作用。

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.