globalchange  > 气候变化与战略
DOI: 10.1016/j.earscirev.2021.103508
论文题名:
Towards interactive global paleogeographic maps, new reconstructions at 60, 40 and 20 Ma
作者: Poblete F.; Dupont-Nivet G.; Licht A.; van Hinsbergen D.J.J.; Roperch P.; Mihalynuk M.G.; Johnston S.T.; Guillocheau F.; Baby G.; Fluteau F.; Robin C.; van der Linden T.J.M.; Ruiz D.; Baatsen M.L.J.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2021
卷: 214
语种: 英语
中文关键词: Cenozoic ; Eocene-Oligocene transition ; paleoclimate ; Paleoelevation ; Paleogeographic maps ; Tibetan-Himalayan orogen
英文关键词: Cenozoic ; elevation ; Eocene-Oligocene boundary ; geological mapping ; Himalayan orogeny ; paleoclimate ; paleogeography ; reconstruction ; Andes ; Antarctica ; Mediterranean Region ; North American Cordillera ; Scotia Arc
英文摘要: Paleogeographic maps are essential tools for understanding Earth system dynamics. They provide boundary conditions for climate and geodynamic modelling, for analysing surface processes and biotic interactions. However, the temporal and spatial distribution of key features such as seaways and mountain belts that govern climate changes and biotic interchange differ between various paleogeographies that require regular updates with new data and models. We developed a reproducible and systematic approach to paleogeographic reconstruction and provide a set of worldwide Cenozoic paleogeographic maps at 60, 40 and 20 Ma. We followed a six-stage methodology that integrates an extensive review of geological data into a coherent plate tectonic model using the open source software GPlates. (1) We generated a global plate kinematic model, and reconstructed intensely-deformed plate boundaries using a review of structural, paleomagnetic and other geologic data in six key regions: the Andes, the North American Cordillera, the Scotia Arc, Africa, the Mediterranean region and the Tibetan-Himalayan collision zone. (2) We modified previously published paleobathymetry in several regions where continental and oceanic crust overlap due to differences in the plate models. (3) We then defined paleoshorelines using updated fossil and geologic databases to locate the terrestrial to marine transition. (4) We applied isostatic compensation in polar regions and global eustatic sea level adjustments. (5) Paleoelevations were estimated using a broad range of data including thermochronology and stable isotopes, combined with paleobotanical (mostly pollen and leaf physiognomy), structural and geomorphological data. We address ongoing controversies on the mechanisms and chronology of India-Asia collision by providing alternate reconstructions for each time slice. We finally discuss the implications of our reconstructions on the Cenozoic evolution of continental weatherability and review methodological limitations and potential improvements. Future addition of new data, tools and reconstructions can be accommodated through a dedicated interactive website tool (https://map.paleoenvironment.eu/) that enables users to interactively upload and download data and compare with other models, and generate their own plots. Our aim is to regularly update the models presented here with new data as they become available. © 2021 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/166484
Appears in Collections:气候变化与战略

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作者单位: Géosciences Rennes, UMR CNRS 6118, Rennes, Rennes Cedex, 35042, France; Departamento de Geología, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Chile; Universität Potsdam, Institute of Geoscience, Potsdam, 14476, Germany; Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (Cerege), UMR CNRS 7330, Aix-en-Provence, 13545, France; Department of Earth Sciences, Utrecht University, Princetonlaan 8a, Utrecht, 3584 CB, Netherlands; British Columbia Geological Survey, Vancouver, Canada; Department of Earth and Atmospheric Sciences, University of Alberta, Canada; Université de Paris, Institut de physique du globe de Paris, CNRS, Paris, F-75005, France; Thomas van Der Linden – LinGeo, Berlin, Germany; IMAU, Utrecht University, Princetonplein 5, Utrecht, 3584CC, Netherlands

Recommended Citation:
Poblete F.,Dupont-Nivet G.,Licht A.,et al. Towards interactive global paleogeographic maps, new reconstructions at 60, 40 and 20 Ma[J]. Earth Science Reviews,2021-01-01,214
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