globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2700
论文题名:
Long-lived connection between southern Siberia and northern Laurentia in the Proterozoic
作者: Ernst R.E.; Hamilton M.A.; Söderlund U.; Hanes J.A.; Gladkochub D.P.; Okrugin A.V.; Kolotilina T.; Mekhonoshin A.S.; Bleeker W.; LeCheminant A.N.; Buchan K.L.; Chamberlain K.R.; Didenko A.N.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期:6
起始页码: 464
结束页码: 469
语种: 英语
Scopus关键词: age ; dating method ; diabase ; emplacement ; geochronology ; igneous province ; Laurentia ; literature review ; magmatism ; Precambrian ; Proterozoic ; reconstruction ; Rodinia ; Columbia [Missouri] ; Missouri ; Siberia ; United States
英文摘要: Precambrian supercontinents Nuna-Columbia (1.7 to 1.3 billion years ago) and Rodinia (1.1 to 0.7 billion years ago) have been proposed. However, the arrangements of crustal blocks within these supercontinents are poorly known. Huge, dominantly basaltic magmatic outpourings and intrusions, covering up to millions of square kilometres, termed Large Igneous Provinces, typically accompany (super) continent breakup, or attempted breakup and offer an important tool for reconstructing supercontinents. Here we focus on the Large Igneous Province record for Siberia and Laurentia, whose relative position in Nuna-Columbia and Rodinia reconstructions is highly controversial. We present precise geochronology - nine U-Pb and six Ar-Ar ages - on dolerite dykes and sills, along with existing dates from the literature, that constrain the timing of emplacement of Large Igneous Province magmatism in southern Siberia and northern Laurentia between 1,900 and 720 million years ago. We identify four robust age matches between the continents 1,870, 1,750, 1,350 and 720 million years ago, as well as several additional approximate age correlations that indicate southern Siberia and northern Laurentia were probably near neighbours for this 1.2-billion-year interval. Our reconstructions provide a framework for evaluating the shared geological, tectonic and metallogenic histories of these continental blocks. © 2016 Macmillan Publishers Limited.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105995
Appears in Collections:气候减缓与适应
科学计划与规划

Files in This Item:

There are no files associated with this item.


作者单位: Department of Earth Sciences, Carleton University, Ottawa, ON, Canada; Faculty of Geology and Geography, Tomsk State University, Tomsk, Russian Federation; Jack Satterly Geochronology Laboratory, University of Toronto, Toronto, ON, Canada; Department of Earth and Ecosystem Sciences, Lund University, Lund, Sweden; Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, ON, Canada; Institute of the Earth's Crust, Siberian Branch of the RAS, Irkutsk, Russian Federation; Diamond and Precious Metal Geology Institute, Yakutsk, Russian Federation; Institute of Geochemistry, Irkutsk, Russian Federation; Geological Survey of Canada, Ottawa, ON, Canada; Geological Survey of Canada, 5592 Van Vliet Road, Manotick, ON, Canada; Department of Geology and Geophysics, University of Wyoming, Laramie, WY, United States; Kosygin Institute of Tectonics and Geophysics, Khabarovsk, Russian Federation

Recommended Citation:
Ernst R.E.,Hamilton M.A.,Söderlund U.,et al. Long-lived connection between southern Siberia and northern Laurentia in the Proterozoic[J]. Nature Geoscience,2016-01-01,9(6)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Ernst R.E.]'s Articles
[Hamilton M.A.]'s Articles
[Söderlund U.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Ernst R.E.]'s Articles
[Hamilton M.A.]'s Articles
[Söderlund U.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Ernst R.E.]‘s Articles
[Hamilton M.A.]‘s Articles
[Söderlund U.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.