DOCSLIB.ORG

Siberian Apparent Polar Wander Path for the Phanerozoic Eon: Towards finding Siberian Place on Earth D

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Siberian Apparent Polar Wander Path for the Phanerozoic Eon: Towards finding Siberian Place on Earth D Siberian Apparent Polar Wander Path for the Phanerozoic Eon: towards finding Siberian Place on Earth D. Blanco 1, V.A. Kravchinsky 1, K. Kabin2 1Physics Department, University of Alberta, Edmonton, AB, Canada email: [email protected] 2 Physics Department, Royal Military College of Canada, Kingston, ON, Canada Abstract Presentation Number1180456 Kuzmin et al. (2010) Work in Progress Introduction Smirnov and Tarduno (2010) The existence of Siberia as an independent stable platform can be traced back with accuracy from the breakup of 180 180 Figure 2 Rodinia (~800 Ma) until the end of the Paleozoic Eon when it became part of Eurasia. Different continental blocks 248 Ma 295 295 A B 291 250 Ma Comparison between European APWPs constructed Present accreted to Siberia since Precambrian forming one of the largest tectonic structures on Earth – Siberian continent. 283 300 283 300 228 Ma 275 275 278 278 with the SVD least squares method using different At the same time Siberian apparent polar wander path (APWP), which is crucial for global tectonic reconstructions, 296 296 300 300 number of polynomials m (A) and the smoothing 360 Ma 348 Ma still contain long unresolved segments. 242 242 method using different smoothing parameters S Kuzmin et al. (2010) 267 Torsvik et al. 2001 267 Torsvik et al. 2001 o o o 45 75 (B). The 95% confidence circles are not shown for 15 267 209 267 209 In this contribution, we present the behavior of two fitting methods (a least-squares fit computed through singular 201 221 221 clarity. Red path with crosses is the APWP of African 198 198 S=35 m=10 value decomposition (SVD) and a smoothing technique) when applied to extensive and sparse data sets. During the S= 15 157 m=6 LLSVP 448 Ma 159 157 Europe from Torsvik et al. (2001) (their Table 2). In- 168 159 168 140 216 209 140 209 Mesozoic Era we considered two possible scenarios discussed in the literature: Siberia was regarded as a consolida- 157 157 216 dividual paleomagnetic poles from Table 1b of Tors- 192 201 192 201 158 158 ted component of Eurasia since Triassic (Cocks and Torsvik, 2007); and Siberia was an independent continent 201 179 179 201 vik et al. (2001) are shown as green points. (Metelkin et al., 2010)). Furthermore, we follow Kuzmin et al. (2010) and Smirnov and Tarduno (2010), who recons- 184 184 90 548 Ma 198 198 tructed the paleoposition of Siberian platform with respect to the present day Icelandic hot spot, in order to perform Figure 5 an absolute tectonic reconstruction of the Siberian continent during the Phanerozoic. Location of Siberian continent during 250 Ma (purple dot) and 360 Ma (green star), as 250 Ma 250 Ma proposed by Kuzmin et al. (2010). The African LLSVP is demarcated by the red dashed 250 Ma line. We will perform an absolute reconstruction of the position of Siberia using our 228 Ma 228 Ma S=30 APWP (black dots) during the Paleozoic taking as a reference point the Icelandic posi- 228 Ma B m=6 tion of Siberia during the Permo-Triassic boundary. Taymir Fold Belt A 70 o 250 250 Cocks and Torvik, 2007 446 Ma 446 Ma Enisey-Khatanga aulacogen Verkhoyansk 200 248 248 250 200 250 Omolon, 275 275 Kolyma and 446 Ma surrounded 228 228 blocks Fold Belt 538.5 Ma 538.5 Ma Conclusion Ob aulacogen Siberian 365 365 An updated apparent polar wander path of Siberia along the Phanerozoic Eon is presented. o 538.5 Ma 60 445.5 519 Ma 519 Ma platform 445.5 Two techniques to fit curves to the paleomagnetic pole have been tested on the extensive 464 464.5 444.5 444.5 464.5 519 Ma data set of Europe and on the sparse data set of Siberia. The least-squares fit computed 424 424 o 500.5 100 N 448.5 448.5 468 Belt 494.5 478 Siberia and Metelkin o A through singular value decomposition (SVD) presents smooth paths and provide a good fit West Siberian basin 464 Siberia and Europe 483.5 538.5 483.5 538.5 Sayan Fold 494.5 505.5 o 50 o N 480 80 N to the general tendency of the paths. The smoothing method is more sensitive to the fea- Belt 507 524 Fold 524 470 SVD Method 60 o N 519 507 519 o o 480 483.5 Smooth Method 483.5 tures (cusps) and presents a less smooth fitting to the data. 50 Fold o Altay Fold Belt Baikal 40 o N 0 494.5 Latitudinal Drift ( ) Relative tectonic reconstructions are presented using the Siberian data sets including Metel- TMn 20 o N Figure 1 50 o S Belt Mongol - Okhotsk 0o 40 100 150 200 250 300 350 400 450 500 kin et al. (2010) poles and European poles during the Mesozoic. Both paths demostrate Amuria Latitudinal Drift ( ) 35 Left hand side: Simplified geological structure of Siberia and surrounding 20 o S B Geological Time (Ma) Jun 30 ? similar latitudinal displacements and APWP migration velocities. o 40 S 25 regions modified from Kravchinsky et al. (2002). 1: Precambrian shields; 250 300 350 400 450 500 550 Geological Time (Ma) 20 Absolute tectonic reconstructions are still being developed and will be completed taking o 2: Riphean and Palaeozoic sediment cover; 3: Permo-Triassic traps; 15 40 Tarim into account the location of Siberia above the Icelandic hotspot at 250 Ma and above the North China Figure 3 10 4: Viluy palaeorift; 5: edge of Precambrian platform; 6: Middle–Late APWP velocity (cm/year) Block 5 African LLSVP during the Paleozoic. Up: Comparison between Siberian APW paths 0 Palaeozoic border of Siberian block. Names of blocks: TMn: Tuva-Mongolian, 100 150 200 250 300 350 400 450 500 550 Qiangtang for 228-550 Myr interval constructed with Sibe- Figure 4 Geological Time (Ma) o Jun: Jungar ; 7: paleomagnetic study sampling localities. 100 110 o 120o rian dataset. Green squares: smooth method Up: Left, APWP construted with SVD least squares References Cocks, L. R.M., Torsvik, T.H., 2007. Siberia, The wandering northern terrane, and its changing geography through the Paleozoic. Earth- 1 2 3 4 with S=30. Blue diamonds: SVD least squares method, m=10. Rigth, APWP constructed with Right hand side: Selected paleomagnetic poles with 95% confidence ovals Science Reviews, 82, 29–74. with m=6. Red cross: APWP of Cocks and Torsvik smoothing method, S=30. Comparison paths includ- Gurevitch, E.L., 1984. Palaeomagnetism of the Ordovician deposits of the Moyero River sequence. Palaeomagnetic Methods in Stra- 6 7 for the Siberian APWP construction. Following Gurevitch (1984) and Pavlov 5 (2007). The 95% confidence circles for the APWP ing Metelkin et al. (2010) Siberian poles vs. Euro- tigraphy. VNIGR, St Petersburg, pp. 35–41 (In Russian). and Petrov (1996), the poles from 407 to 430 Ma have been rotate to take Kravchinsky, V.A., Konstantinov, K.M., Cogné, J.-P., 2001. Palaeomagnetic study of Vendian and Early Cambrian rocks of South Siberia are not shown for clarity. Individual Siberian pean poles from Torsvik et al. (2001) during the Me- into account the opening of the Viljuy Basin. Plot A represents the selected and Central Mongolia: was the Siberian platform assembled at this time? Precambrian Research 110, 61–92. poles and their 95% confidence circles are sozoic is shown. Blue squares/diamonds: Metelkin’s Kuzmin, M.I., Yarmolyuk, V.V., Kravchinsky, V.A., 2010. Phanerozoic hot spot traces and paleographic reconstructions of the Siberian poles without rotation. Plot B, corrected poles respect an Euler pole of continent based on interaction with the African large low shear velocity province. Earth-Science Reviews, 102, 29–59. shown as circles. A 20 Ma windows was used for poles and Siberian poles; purple triangles: European latitude 60°N, longitude 120°E and angle of 13° (Cocks and Torsvik, 2007). Metelkin, D.V., Vernikovsky, V.A., Kazansky, A.Y., Wingate, M.T.D., 2010. Late Mesozoic tectonics of Central Asia based on paleomag- the APWP construction. and Siberian poles. netic evidence. Gondwana Research, 18, 400–419. o o Pavlov, V.E., Petrov, P.Y., 1996. Paleomagnetic investigation of the Riphean sediments of the Turukan region. Fizika Zemli 3, 71–81 (In Down: Latitudinal drift for a reference point at Down: A: Latitudinal drift for a reference point at 65 N Russian). 65 N and 105 E, based on SVD least squares and and 105 E. B: APWP migration velocity. Both plots where Smirnov, A.V., Tarduno, J.A., 2010. Co-location of eruption sites of the Siberian Traps and North Atlantic ignous province: Implications for the nature of hotsptos and mantle plumes. Earth and Planetary Science Letters, 297, 687-690. smooth paths. based on SVD least squares with m=10. Torsvik, T.H., Van der Voo, R., Meert, J.G., Mosar, J., Walderhaug, H.J., 2001. Reconstructions of the continents around the North Atlan- tic at about the 60th parallel. Earth and Planetary Science Letters, 187, 55–69. .
Load more

Recommended publications
  • Assembly, Configuration, and Break-Up History of Rodinia
    Author's personal copy Available online at www.sciencedirect.com Precambrian Research 160 (2008) 179–210 Assembly, configuration, and break-up history of Rodinia: A synthesis Z.X. Li a,g,∗, S.V. Bogdanova b, A.S. Collins c, A. Davidson d, B. De Waele a, R.E. Ernst e,f, I.C.W. Fitzsimons g, R.A. Fuck h, D.P. Gladkochub i, J. Jacobs j, K.E. Karlstrom k, S. Lu l, L.M. Natapov m, V. Pease n, S.A. Pisarevsky a, K. Thrane o, V. Vernikovsky p a Tectonics Special Research Centre, School of Earth and Geographical Sciences, The University of Western Australia, Crawley, WA 6009, Australia b Department of Geology, Lund University, Solvegatan 12, 223 62 Lund, Sweden c Continental Evolution Research Group, School of Earth and Environmental Sciences, University of Adelaide, Adelaide, SA 5005, Australia d Geological Survey of Canada (retired), 601 Booth Street, Ottawa, Canada K1A 0E8 e Ernst Geosciences, 43 Margrave Avenue, Ottawa, Canada K1T 3Y2 f Department of Earth Sciences, Carleton U., Ottawa, Canada K1S 5B6 g Tectonics Special Research Centre, Department of Applied Geology, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, Australia h Universidade de Bras´ılia, 70910-000 Bras´ılia, Brazil i Institute of the Earth’s Crust SB RAS, Lermontova Street, 128, 664033 Irkutsk, Russia j Department of Earth Science, University of Bergen, Allegaten 41, N-5007 Bergen, Norway k Department of Earth and Planetary Sciences, Northrop Hall University of New Mexico, Albuquerque, NM 87131, USA l Tianjin Institute of Geology and Mineral Resources, CGS, No.
    [Show full text]
  • Helicobacter Pylori's Historical Journey Through Siberia and the Americas
    Helicobacter pylori’s historical journey through Siberia and the Americas Yoshan Moodleya,1,2, Andrea Brunellib,1, Silvia Ghirottoc,1, Andrey Klyubind, Ayas S. Maadye, William Tynef, Zilia Y. Muñoz-Ramirezg, Zhemin Zhouf, Andrea Manicah, Bodo Linzi, and Mark Achtmanf aDepartment of Zoology, University of Venda, Thohoyandou 0950, Republic of South Africa; bDepartment of Life Sciences and Biotechnology, University of Ferrara, 44121 Ferrara, Italy; cDepartment of Mathematics and Computer Science, University of Ferrara, 44121 Ferrara, Italy; dDepartment of Molecular Biology and Genetics, Research Institute for Physical-Chemical Medicine, 119435 Moscow, Russia; eDepartment of Diagnostic and Operative Endoscopy, Pirogov National Medical and Surgical Center, 105203 Moscow, Russia; fWarwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom; gLaboratorio de Bioinformática y Biotecnología Genómica, Escuela Nacional de Ciencias Biológicas, Unidad Profesional Lázaro Cárdenas, Instituto Politécnico Nacional, 11340 Mexico City, Mexico; hDepartment of Zoology, University of Cambridge, Cambridge CB2 3EJ, United Kingdom; and iDepartment of Biology, Division of Microbiology, Friedrich Alexander University Erlangen-Nuremberg, 91058 Erlangen, Germany Edited by Daniel Falush, University of Bath, Bath, United Kingdom, and accepted by Editorial Board Member W. F. Doolittle April 30, 2021 (received for review July 22, 2020) The gastric bacterium Helicobacter pylori shares a coevolutionary speakers). However, H. pylori’s presence, diversity, and structure history with humans that predates the out-of-Africa diaspora, and in northern Eurasia are still unknown. This vast region, hereafter the geographical specificities of H. pylori populations reflect mul- Siberia, extends from the Ural Mountains in the west to the tiple well-known human migrations. We extensively sampled H.
    [Show full text]
  • African Families in a Global Context
    RR13X.book Page 1 Monday, November 14, 2005 2:20 PM RESEARCH REPORT NO. 131 AFRICAN FAMILIES IN A GLOBAL CONTEXT Edited by Göran Therborn Nordiska Afrikainstitutet, Uppsala 2006 RR13X.book Page 2 Monday, November 14, 2005 2:20 PM Indexing terms Demographic change Family Family structure Gender roles Social problems Africa Ghana Nigeria South Africa African Families in a Global Context Second edition © the authors and Nordiska Afrikainstitutet, 2004 Language checking: Elaine Almén ISSN 1104-8425 ISBN 91-7106-561-X (print) 91-7106-562-8 (electronic) Printed in Sweden by Elanders Infologistics Väst AB, Göteborg 2006 RR13X.book Page 3 Monday, November 14, 2005 2:20 PM Contents Preface . 5 Author presentations . 7 Introduction Globalization, Africa, and African Family Pattern . 9 Göran Therborn 1. African Families in a Global Context. 17 Göran Therborn 2. Demographic Innovation and Nutritional Catastrophe: Change, Lack of Change and Difference in Ghanaian Family Systems . 49 Christine Oppong 3. Female (In)dependence and Male Dominance in Contemporary Nigerian Families . 79 Bola Udegbe 4. Globalization and Family Patterns: A View from South Africa . 98 Susan C. Ziehl RR13X.book Page 4 Monday, November 14, 2005 2:20 PM RR13X.book Page 5 Monday, November 14, 2005 2:20 PM Preface In the mid-1990s the Swedish Council for Planning and Coordination of Research (Forskningsrådsnämnden – FRN) – subsequently merged into the Council of Sci- ence (Vetenskaprådet) – established a national, interdisciplinary research committee on Global Processes. The Committee has been strongly committed to a multidi- mensional and multidisciplinary approach to globalization and global processes and to using regional perspectives.
    [Show full text]
  • Back Matter (PDF)
    Index Page numbers in italic refer to tables, and those in bold to figures. accretionary orogens, defined 23 Namaqua-Natal Orogen 435-8 Africa, East SW Angola and NW Botswana 442 Congo-Sat Francisco Craton 4, 5, 35, 45-6, 49, 64 Umkondo Igneous Province 438-9 palaeomagnetic poles at 1100-700 Ma 37 Pan-African orogenic belts (650-450 Ma) 442-50 East African(-Antarctic) Orogen Damara-Lufilian Arc-Zambezi Belt 3, 435, accretion and deformation, Arabian-Nubian Shield 442-50 (ANS) 327-61 Katangan basaltic rocks 443,446 continuation of East Antarctic Orogen 263 Mwembeshi Shear Zone 442 E/W Gondwana suture 263-5 Neoproterozoic basin evolution and seafloor evolution 357-8 spreading 445-6 extensional collapse in DML 271-87 orogenesis 446-51 deformations 283-5 Ubendian and Kibaran Belts 445 Heimefront Shear Zone, DML 208,251, 252-3, within-plate magmatism and basin initiation 443-5 284, 415,417 Zambezi Belt 27,415 structural section, Neoproterozoic deformation, Zambezi Orogen 3, 5 Madagascar 365-72 Zambezi-Damara Belt 65, 67, 442-50 see also Arabian-Nubian Shield (ANS); Zimbabwe Belt, ophiolites 27 Mozambique Belt Zimbabwe Craton 427,433 Mozambique Belt evolution 60-1,291, 401-25 Zimbabwe-Kapvaal-Grunehogna Craton 42, 208, 250, carbonates 405.6 272-3 Dronning Mand Land 62-3 see also Pan-African eclogites and ophiolites 406-7 Africa, West 40-1 isotopic data Amazonia-Rio de la Plata megacraton 2-3, 40-1 crystallization and metamorphic ages 407-11 Birimian Orogen 24 Sm-Nd (T DM) 411-14 A1-Jifn Basin see Najd Fault System lithologies 402-7 Albany-Fraser-Wilkes
    [Show full text]
  • Earth History
    Earth History Geography 106 LRS Doug Fischer Introduction – Overview of geologic history • Plate positions over time • Major biogeographic events Earth’s tectonic history • Gondwanaland – Southern continents – Formed 650mya Precambrian • Laurasia – Northern Continents – Most converged in Devonian 400mya as “old sandstone continent” • Formation of Pangaea – Late Permian ~ 275 mya Breakup of Pangaea • Started 180 mya (early Jurassic) – Prior to breakup, great mixing of biota – However, regionalization did still occur as it does on (smaller) continents today Breakup of Laurasia • Separated Europe & N. America 100 mya • Beringia rejoined them 75 mya • Intermittent connection via Greenland & Beringia through Tertiary Breakup of Gondwanaland • 180-160mya Gondwanaland started to split – Mesozoic (Triassic/Jurassic) • Mostly finished by 90 mya 152 mya 94 mya Central America and Antilles • Caribbean Plate was sandwiched between N&S America between 80 and 20 mya • Formed ring of islands • Landbridge closed ~ 3.5 mya – Great American Interchange 14 mya Biogeographic consequences of plate tectonics • Fragmentation and dispersal of ancestral biota (vicariance) • Changing barriers and coridors – biotic interchange • Speciation and extinction – changing physical and biological conditions Tour of Geologic History The geologic time scale • Phanerozoic starts with Cambrian explosion of species with hard body parts – (Some multi- cellular algae and animals lived at the end of the Precambrian) Paleozoic Paleozoic Cambrian • Animals with hard-shells appeared in great numbers for the first time • The continents were flooded by shallow seas. • The supercontinent of Gondwana had just formed and was located near the South Pole. Ordivician • ancient oceans separated the barren continents of Laurentia, Baltica, Siberia and Gondwana. • The end of the Ordovician was one of the coldest times in Earth history.
    [Show full text]
  • Detrital-Zircon Geochronologic Provenance Analyses That Test and Expand the East Siberia - West Laurentia Rodinia Reconstruction
    University of Montana ScholarWorks at University of Montana Graduate Student Theses, Dissertations, & Professional Papers Graduate School 2007 DETRITAL-ZIRCON GEOCHRONOLOGIC PROVENANCE ANALYSES THAT TEST AND EXPAND THE EAST SIBERIA - WEST LAURENTIA RODINIA RECONSTRUCTION John Stuart MacLean The University of Montana Follow this and additional works at: https://scholarworks.umt.edu/etd Let us know how access to this document benefits ou.y Recommended Citation MacLean, John Stuart, "DETRITAL-ZIRCON GEOCHRONOLOGIC PROVENANCE ANALYSES THAT TEST AND EXPAND THE EAST SIBERIA - WEST LAURENTIA RODINIA RECONSTRUCTION" (2007). Graduate Student Theses, Dissertations, & Professional Papers. 1216. https://scholarworks.umt.edu/etd/1216 This Dissertation is brought to you for free and open access by the Graduate School at ScholarWorks at University of Montana. It has been accepted for inclusion in Graduate Student Theses, Dissertations, & Professional Papers by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact [email protected]. DETRITAL-ZIRCON GEOCHRONOLOGIC PROVENANCE ANALYSES THAT TEST AND EXPAND THE EAST SIBERIA – WEST LAURENTIA RODINIA RECONSTRUCTION By John Stuart MacLean Bachelor of Science in Geology, Furman University, Greenville, SC, 2001 Master of Science in Geology, Syracuse University, Syracuse, NY, 2004 Dissertation presented in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Geosciences The University of Montana Missoula, MT Spring, 2007 Approved by: Dr. David A. Strobel, Dean Graduate School Dr. James W. Sears, Chair Department of Geosciences Dr. Julie A. Baldwin Department of Geosciences Dr. Kevin R. Chamberlain Department of Geology and Geophysics, University of Wyoming Dr. David B. Friend Department of Physics and Astronomy Dr.
    [Show full text]
  • Pannotia's Mantle Signature: the Quest for Supercontinent Identification
    Downloaded from http://sp.lyellcollection.org/ by guest on September 30, 2021 Accepted Manuscript Geological Society, London, Special Publications Pannotia's mantle signature: the quest for supercontinent identification Philip J. Heron, J. Brendan Murphy, R. Damian Nance & R. N. Pysklywec DOI: https://doi.org/10.1144/SP503-2020-7 To access the most recent version of this article, please click the DOI URL in the line above Received 10 January 2020 Revised 2 July 2020 Accepted 6 July 2020 © 2020 The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/). Published by The Geological Society of London. Publishing disclaimer: www.geolsoc.org.uk/pub_ethics When citing this article please include the DOI provided above. Manuscript version: Accepted Manuscript This is a PDF of an unedited manuscript that has been accepted for publication. The manuscript will undergo copyediting, typesetting and correction before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the book series pertain. Although reasonable efforts have been made to obtain all necessary permissions from third parties to include their copyrighted content within this article, their full citation and copyright line may not be present in this Accepted Manuscript version. Before using any content from this article, please refer to the Version of Record once published for full citation and copyright details, as permissions may be required. Downloaded from http://sp.lyellcollection.org/ by guest on September 30, 2021 Pannotia's mantle signature: the quest for supercontinent identification Philip J.
    [Show full text]
  • North China Craton: the Conjugate Margin for Northwestern Laurentia in Rodinia Jikai Ding1,2, Shihong Zhang1,3*, David A.D
    https://doi.org/10.1130/G48483.1 Manuscript received 7 October 2020 Revised manuscript received 27 December 2020 Manuscript accepted 12 January 2021 © 2021 The Authors. Gold Open Access: This paper is published under the terms of the CC-BY license. Published online 22 March 2021 North China craton: The conjugate margin for northwestern Laurentia in Rodinia Jikai Ding1,2, Shihong Zhang1,3*, David A.D. Evans2, Tianshui Yang1, Haiyan Li1, Huaichun Wu1 and Jianping Chen3 1 State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing 100083, China 2 Department of Earth and Planetary Sciences, Yale University, New Haven, Connecticut 06520, USA 3 School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China ABSTRACT ern NCC and northwestern Laurentia (present In the Rodinia supercontinent, Laurentia is placed at the center because it was flanked coordinates) was proposed (Fu et al., 2015; by late Neoproterozoic rifted margins; however, the conjugate margin for western Laurentia Zhao et al., 2020) but required rigorous testing is still enigmatic. In this study, new paleomagnetic results have been obtained from 15 ca. by coeval pairs of high-quality poles with pre- 775 Ma mafic dikes in eastern Hebei Province, North China craton (NCC). Stepwise thermal cise age constraints. In this study, we report a demagnetization revealed a high-temperature component, directed northeast or southwest new high-quality paleomagnetic pole obtained with shallow inclinations, with unblocking temperatures of as high as 580 °C. Rock magne- from ca. 775 Ma mafic dikes in the eastern He- tism suggests the component is carried by single-domain and pseudo-single-domain magnetite bei Province, NCC.
    [Show full text]
  • Back to the Future II: Tidal Evolution of Four Supercontinent Scenarios
    Earth Syst. Dynam., 11, 291–299, 2020 https://doi.org/10.5194/esd-11-291-2020 © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License. Back to the future II: tidal evolution of four supercontinent scenarios Hannah S. Davies1,2, J. A. Mattias Green3, and Joao C. Duarte1,2,4 1Instituto Dom Luiz (IDL), Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisbon, Portugal 2Departamento de Geologia, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisbon, Portugal 3School of Ocean Sciences, Bangor University, Askew St, Menai Bridge LL59 5AB, UK 4School of Earth, Atmosphere and Environment, Monash University, Melbourne, VIC 3800, Australia Correspondence: Hannah S. Davies ([email protected]) Received: 7 October 2019 – Discussion started: 25 October 2019 Revised: 3 February 2020 – Accepted: 8 February 2020 – Published: 20 March 2020 Abstract. The Earth is currently 180 Myr into a supercontinent cycle that began with the break-up of Pangaea and which will end around 200–250 Myr (million years) in the future, as the next supercontinent forms. As the continents move around the planet they change the geometry of ocean basins, and thereby modify their resonant properties. In doing so, oceans move through tidal resonance, causing the global tides to be profoundly affected. Here, we use a dedicated and established global tidal model to simulate the evolution of tides during four future supercontinent scenarios. We show that the number of tidal resonances on Earth varies between one and five in a supercontinent cycle and that they last for no longer than 20 Myr.
    [Show full text]
  • Siberia Hot and Cold: Reconstructing the Image Of
    BETWEEN HEAVEN AND HELL The Myth of Siberia in Russian Culture Edited By Galya Diment and Yuri Slezkine II - ~ St. Martin's Press New York 226 Between Heaven and Helf ParkService(March 15, 1991),p. 31f. My thanks to JohnTichotsky for sharing with me his encyclopedic knowledge of the Chukchi. 7. Vladimir Sangi, head of the Association of the Peoples of the North, has since } 1961 collected, studied, and published the legends and myths of the Nivkh peoples (Nivkhskie legendy [Iuzhno-Sakhalinsk: Sakhalinskoe knizhnoe izdatel'stvo, 1961] and Legendy Ykh-Mifa [Moscow: Sovetskaia Rossiia, 13 1967]). In his novel Zhenit' ba Kevongov (Moscow: Sovetskii pisatel', 1975) Sangi explores the historical genealogy of his people and theirnotions of what constitutes biography. Sangi has been among the most ardent defenders of the peoples of the north and has voiced his concern overtheiriiterary fate now that the All-Union Writers' Union no longer exists. See "Union of Soviet Writers Is Also Breaking Apart," New York Times, Sept. 14, 1991, p. 13. 8. YuriRytkheu,Magicheskie chis la (Leningrad: Sovetskii pisatel', 1986), pp. 16-17. Siberia Hot and Cold: Reconstructing the 9. Waldemar Bogoraz, "Chukchee Mythology," in Franz Boaz, ed., The Jesup Image of Siberian Indigenous Peoples North Pacific Expedition (New York: AMS Press, 1975), vol. 8, pp. 138, 141. 10. Ibid, p. 141. 11. Rytkheu, Reborn to a Full Life, pp. 16-18. Bruce Grant 12. Rytkheu's retelling of the whale legend appeared in "When Whales Leave," Soviet Literature 12 (1977): 3-73. 13. See Radio Liberty Research Bulletin, March 8, 1988, p.
    [Show full text]
  • Palaeoproterozoic Supercontinents and Global Evolution, Edited by S.M
    Journal of Sedimentary Research An International Journal of SEPM JJSSRR Paul McCarthy and Gene Rankey, Editors A.J. (Tom) van Loon, Associate Editor for Book Reviews Palaeoproterozoic Supercontinents and Global Evolution, edited by S.M. Reddy, R. Mazumder, D.A.D. Evans, and A.S. Collins, 2009. Geological Society (London) Special Publication 323. The Geological Society of London, Publishing House, Unit 7, Brassmill Enterprise Centre, Brassmill Lane, Bath, BA1 3JN, United Kingdom. Hardback, 362 pages. Price GBP 100.00 (fellows GBP 50.00; corporate affiliates GBP 80.00; other societies GBP 60.00). ISBN 978-1-86239-283-0. Sedimentologial research originally focused, understandably, on rocks in which the sedimntary characteristics could be easily determined. This implied a focus on Phanerozoic rocks. Now that most Phanerozoic rocks have been studied, sedimentological interest shifts towards the Precambrian, and it turns out that interesting sedimentological features can befound in these rocks, which partly differ from Phanerozoic features because of different environmental conditions (for instance, hardly any biogenic influence). Therefore this book on the Paleoproterozoic is of interest for sedimentologists,although emphasis is on stratigraphy, geodynamics and continental drift. The rocks dating from the Paleoproterozoic (2.5-1.6 Ga according to a quote in the volume under review) nowadays form disparate segments in space, but these segments show a comparable tectonothermal history, isotopic characters, and paleomagnetic signatures. This promoted the concept of a large landmass, comprising these fragments: the supercontinent Columbia, that existed during the Paleoproterozoic. The challenge of reconstructing the supercontinent and placing it back to its original position has led to collaborative efforts among geoscientists from different disciplines.
    [Show full text]
  • Supercontinent Reconstruction the Palaeomagnetically Viable, Long
    Geological Society, London, Special Publications The palaeomagnetically viable, long-lived and all-inclusive Rodinia supercontinent reconstruction David A. D. Evans Geological Society, London, Special Publications 2009; v. 327; p. 371-404 doi:10.1144/SP327.16 Email alerting click here to receive free email alerts when new articles cite this service article Permission click here to seek permission to re-use all or part of this article request Subscribe click here to subscribe to Geological Society, London, Special Publications or the Lyell Collection Notes Downloaded by on 21 December 2009 © 2009 Geological Society of London The palaeomagnetically viable, long-lived and all-inclusive Rodinia supercontinent reconstruction DAVID A. D. EVANS Department of Geology & Geophysics, Yale University, New Haven, CT 06520-8109, USA (e-mail: [email protected]) Abstract: Palaeomagnetic apparent polar wander (APW) paths from the world’s cratons at 1300–700 Ma can constrain the palaeogeographic possibilities for a long-lived and all-inclusive Rodinia supercontinent. Laurentia’s APW path is the most complete and forms the basis for super- position by other cratons’ APW paths to identify possible durations of those cratons’ inclusion in Rodinia, and also to generate reconstructions that are constrained both in latitude and longitude relative to Laurentia. Baltica reconstructs adjacent to the SE margin of Greenland, in a standard and geographically ‘upright’ position, between c. 1050 and 600 Ma. Australia reconstructs adja- cent to the pre-Caspian margin of Baltica, geographically ‘inverted’ such that cratonic portions of Queensland are juxtaposed with that margin via collision at c. 1100 Ma. Arctic North America reconstructs opposite to the CONgo þ Sa˜o Francisco craton at its DAmaride–Lufilian margin (the ‘ANACONDA’ fit) throughout the interval 1235–755 Ma according to palaeomag- netic poles of those ages from both cratons, and the reconstruction was probably established during the c.
    [Show full text]