IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v14y2023i1d10.1038_s41467-023-37799-w.html
   My bibliography  Save this article

Ghost-arc geochemical anomaly at a spreading ridge caused by supersized flat subduction

Author

Listed:
  • Guido M. Gianni

    (Universidad Nacional de San Juan
    National Scientific and Technical Research Council (CONICET))

  • Jeremías Likerman

    (National Scientific and Technical Research Council (CONICET)
    Universidad de Buenos Aires)

  • César R. Navarrete

    (National Scientific and Technical Research Council (CONICET)
    Universidad Nacional de la Patagonia “San Juan Bosco”)

  • Conrado R. Gianni

    (Universidad Nacional de San Juan)

  • Sergio Zlotnik

    (Universitat Politécnica de Catalunya
    Centre Internacional de Métodes Numérics a l’Enginyeria (CIMNE))

Abstract

The Southern Atlantic-Southwest Indian ridges (SASWIR) host mid-ocean ridge basalts with a residual subduction-related geochemical fingerprint (i.e., a ghost-arc signature) of unclear origin. Here, we show through an analysis of plate kinematic reconstructions and seismic tomography models that the SASWIR subduction-modified mantle source formed in the Jurassic close to the Georgia Islands slab (GI) and remained near-stationary in the mantle reference frame. In this analysis, the GI lies far inboard the Jurassic Patagonian-Antarctic Peninsula active margin. This was formerly attributed to a large-scale flat subduction event in the Late Triassic-Early Jurassic. We propose that during this flat slab stage, the subduction-modified mantle areas beneath the Mesozoic active margin and surrounding sutures zones may have been bulldozed inland by >2280 km. After the demise of the flat slab, this mantle anomaly remained near-stationary and was sampled by the Karoo mantle plume 183 Million years (Myr) ago and again since 55 Myr ago by the SASWIR. We refer to this process as asthenospheric anomaly telescoping. This study provides a hitherto unrecognized geodynamic effect of flat subduction, the viability of which we support through numerical modeling.

Suggested Citation

  • Guido M. Gianni & Jeremías Likerman & César R. Navarrete & Conrado R. Gianni & Sergio Zlotnik, 2023. "Ghost-arc geochemical anomaly at a spreading ridge caused by supersized flat subduction," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37799-w
    DOI: 10.1038/s41467-023-37799-w
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-023-37799-w
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-023-37799-w?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    References listed on IDEAS

    as
    1. Yi-Wei Chen & Jonny Wu & John Suppe, 2019. "Southward propagation of Nazca subduction along the Andes," Nature, Nature, vol. 565(7740), pages 441-447, January.
    2. Guido M. Gianni & César R. Navarrete, 2022. "Catastrophic slab loss in southwestern Pangea preserved in the mantle and igneous record," Nature Communications, Nature, vol. 13(1), pages 1-15, December.
    3. Guido M. Gianni & César R. Navarrete, 2022. "Author Correction: Catastrophic slab loss in southwestern Pangea preserved in the mantle and igneous record," Nature Communications, Nature, vol. 13(1), pages 1-1, December.
    4. Steven L. Goldstein & Gad Soffer & Charles H. Langmuir & Kerstin A. Lehnert & David W. Graham & Peter J. Michael, 2008. "Origin of a ‘Southern Hemisphere’ geochemical signature in the Arctic upper mantle," Nature, Nature, vol. 453(7191), pages 89-93, May.
    5. Grace E. Shephard & Christine Houser & John W. Hernlund & Juan J. Valencia-Cardona & Reidar G. Trønnes & Renata M. Wentzcovitch, 2021. "Seismological expression of the iron spin crossover in ferropericlase in the Earth’s lower mantle," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    6. A. Y. Yang & C. H. Langmuir & Y. Cai & P. Michael & S. L. Goldstein & Z. Chen, 2021. "A subduction influence on ocean ridge basalts outside the Pacific subduction shield," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    7. W. P. Schellart, 2017. "Andean mountain building and magmatic arc migration driven by subduction-induced whole mantle flow," Nature Communications, Nature, vol. 8(1), pages 1-13, December.
    8. Karin Sigloch & Mitchell G. Mihalynuk, 2013. "Intra-oceanic subduction shaped the assembly of Cordilleran North America," Nature, Nature, vol. 496(7443), pages 50-56, April.
    9. A. Y. Yang & C. H. Langmuir & Y. Cai & P. Michael & S. L. Goldstein & Z. Chen, 2021. "Author Correction: A subduction influence on ocean ridge basalts outside the Pacific subduction shield," Nature Communications, Nature, vol. 12(1), pages 1-1, December.
    10. B. M. Urann & H. J. B. Dick & R. Parnell-Turner & J. F. Casey, 2020. "Recycled arc mantle recovered from the Mid-Atlantic Ridge," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Guido M. Gianni & César R. Navarrete, 2022. "Catastrophic slab loss in southwestern Pangea preserved in the mantle and igneous record," Nature Communications, Nature, vol. 13(1), pages 1-15, December.
    2. Jiashun Hu & Lijun Liu & Michael Gurnis, 2021. "Southward expanding plate coupling due to variation in sediment subduction as a cause of Andean growth," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    3. Laura Cobden & Jingyi Zhuang & Wenjie Lei & Renata Wentzcovitch & Jeannot Trampert & Jeroen Tromp, 2024. "Full-waveform tomography reveals iron spin crossover in Earth’s lower mantle," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    4. Felipe Quiero & Andrés Tassara & Giampiero Iaffaldano & Osvaldo Rabbia, 2022. "Growth of Neogene Andes linked to changes in plate convergence using high-resolution kinematic models," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    5. Alireza Bahadori & William E. Holt & Ran Feng & Jacqueline Austermann & Katharine M. Loughney & Tristan Salles & Louis Moresi & Romain Beucher & Neng Lu & Lucy M. Flesch & Christopher M. Calvelage & E, 2022. "Coupled influence of tectonics, climate, and surface processes on landscape evolution in southwestern North America," Nature Communications, Nature, vol. 13(1), pages 1-18, December.
    6. Cody C. Mason & Brian W. Romans & Molly O. Patterson & Daniel F. Stockli & Andrea Fildani, 2022. "Cycles of Andean mountain building archived in the Amazon Fan," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    7. Han Hsu & Koichiro Umemoto, 2022. "Structural transition and re-emergence of iron's total electron spin in (Mg,Fe)O at ultrahigh pressure," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    8. Qing Xiong & Hong-Kun Dai & Jian-Ping Zheng & William L. Griffin & Hong-Da Zheng & Li Wang & Suzanne Y. O’ Reilly, 2022. "Vertical depletion of ophiolitic mantle reflects melt focusing and interaction in sub-spreading-center asthenosphere," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37799-w. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.