globalchange  > 气候变化与战略
DOI: 10.1016/j.earscirev.2019.102975
论文题名:
Structural inheritance in the North Atlantic
作者: Schiffer C.; Doré A.G.; Foulger G.R.; Franke D.; Geoffroy L.; Gernigon L.; Holdsworth B.; Kusznir N.; Lundin E.; McCaffrey K.; Peace A.L.; Petersen K.D.; Phillips T.B.; Stephenson R.; Stoker M.S.; Welford J.K.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2020
卷: 206
语种: 英语
中文关键词: continental breakup ; lithosphere ; magmatism ; North Atlantic ; plate tectonics ; reactivation ; rifting ; structural inheritance ; Wilson Cycle
英文关键词: Caledonian orogeny ; fracture zone ; lithospheric structure ; magmatism ; mantle structure ; marginal sea ; rifting ; Atlantic Ocean ; Atlantic Ocean (North)
英文摘要: The North Atlantic, extending from the Charlie Gibbs Fracture Zone to the north Norway-Greenland-Svalbard margins, is regarded as both a classic case of structural inheritance and an exemplar for the Wilson-cycle concept. This paper examines different aspects of structural inheritance in the Circum-North Atlantic region: 1) as a function of rejuvenation from lithospheric to crustal scales, and 2) in terms of sequential rifting and opening of the ocean and its margins, including a series of failed rift systems. We summarise and evaluate the role of fundamental lithospheric structures such as mantle fabric and composition, lower crustal inhomogeneities, orogenic belts, and major strike-slip faults during breakup. We relate these to the development and shaping of the NE Atlantic rifted margins, localisation of magmatism, and microcontinent release. We show that, although inheritance is common on multiple scales, the Wilson Cycle is at best an imperfect model for the Circum-North Atlantic region. Observations from the NE Atlantic suggest depth dependency in inheritance (surface, crust, mantle) with selective rejuvenation depending on time-scales, stress field orientations and thermal regime. Specifically, post-Caledonian reactivation to form the North Atlantic rift systems essentially followed pre-existing orogenic crustal structures, while eventual breakup reflected a change in stress field and exploitation of a deeper-seated, lithospheric-scale shear fabrics. We infer that, although collapse of an orogenic belt and eventual transition to a new ocean does occur, it is by no means inevitable. © 2019 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166246
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作者单位: Department of Earth Sciences, Uppsala University, Villavägen 16, Uppsala, 75236, Sweden; Department of Earth Sciences, Durham University, Science Laboratories, South Rd.DH1 3LE, United Kingdom; Energy & Geoscience Institute (EGI, University of Utah), London, United Kingdom; Bundesanstalt für Geowissenschaften und Rohstoffe (Federal Institute for Geosciences and Natural Resources), Germany; Université de Bretagne Occidentale, Brest, 29238 Brest, CNRS, UMR 6538, Laboratoire Domaines Océaniques, Plouzané, 29280, France; Norges Geologiske Undersøkelse (NGU), Geological Survey of Norway, Leiv Erikssons vei 39, Trondheim, N-7491, Norway; University of Liverpool, School of Environmental Sciences, Liverpool, L69 3GP, United Kingdom; Equinor, Research Centre, Arkitekt Ebbels vei 10, Trondheim, 7053, Norway; Department of Earth Sciences, Memorial University of Newfoundland, St. Johns, NF A1B 3X5, Canada; School of Geography and Earth Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada; Department of Geoscience, Aarhus University, Høegh-Guldbergs Gade 2, Aarhus C, DK-8000, Denmark; School of Geosciences, University of Aberdeen, King's College, Aberdeen, AB24 3UE, United Kingdom; Australian School of Petroleum, University of Adelaide, Adelaide, SA 5005, Australia

Recommended Citation:
Schiffer C.,Doré A.G.,Foulger G.R.,et al. Structural inheritance in the North Atlantic[J]. Earth Science Reviews,2020-01-01,206
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