IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v16y2023i23p7697-d1284888.html
   My bibliography  Save this article

Two-Dimensional Geothermal Model of the Peruvian Andes above the Nazca Ridge Subduction

Author

Listed:
  • Sara Ciattoni

    (Dipartimento di Scienze Pure e Applicate (DiSPeA), Università di Urbino “Carlo Bo”, Via Aurelio Saffi, 2, 61029 Urbino, Italy)

  • Stefano Mazzoli

    (Scuola di Scienze e Tecnologie, Sezione di Geologia, Università degli Studi di Camerino, Via Gentile III da Varano, 7, 62032 Camerino, Italy)

  • Antonella Megna

    (Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata, 605, 00143 Rome, Italy)

  • Matteo Basilici

    (Department of Geosciences, University of Fribourg, 1700 Fribourg, Switzerland)

  • Stefano Santini

    (Dipartimento di Scienze Pure e Applicate (DiSPeA), Università di Urbino “Carlo Bo”, Via Aurelio Saffi, 2, 61029 Urbino, Italy)

Abstract

The aseismic Nazca Ridge produces localized flat-slab subduction beneath the South American margin at latitudes 10° to 15° S. The geological evolution and the spatio-temporal pattern of deformation of the upper plate have been strongly influenced by the presence of the flat slab. In this study, we investigated the lithospheric thermal structure of this region by elaborating a 2D geothermal model along a section across the top of the Nazca Ridge, the Peru–Chile trench, the Andean Cordillera, and the Amazonian Basin, for a total length of 1000 km. For the sake of modelling, the crust of the overriding plate was subdivided into two parts, i.e., a sedimentary cover (including the entire lithostratigraphic sequence) and a crystalline basement. Applying an analytical methodology, we calculated geotherms and isotherms by setting (i) thickness, (ii) density, (iii) heat production, and (iv) thermal conductivity for each geological unit and considering (v) heat flux at the Moho, (vi) frictional heating produced by faults, and (vii) plate convergence rate. The resulting model could make a significant advance in our understanding of how flat slab geometry associated with the Nazca Ridge subduction affects the thermal structure and hence the tectonic evolution of the region.

Suggested Citation

  • Sara Ciattoni & Stefano Mazzoli & Antonella Megna & Matteo Basilici & Stefano Santini, 2023. "Two-Dimensional Geothermal Model of the Peruvian Andes above the Nazca Ridge Subduction," Energies, MDPI, vol. 16(23), pages 1-14, November.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:23:p:7697-:d:1284888
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/16/23/7697/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/16/23/7697/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. C. Di Celma & P.P. Pierantoni & T. Volatili & G. Molli & S. Mazzoli & G. Sarti & S. Ciattoni & G. Bosio & E. Malinverno & A. Collareta & K. Gariboldi & A. Gioncada & D. Jablonska & W. Landini & M. Urb, 2022. "Towards deciphering the Cenozoic evolution of the East Pisco Basin (southern Peru)," Journal of Maps, Taylor & Francis Journals, vol. 18(2), pages 397-412, December.
    2. Sanja Knezevic Antonijevic & Lara S. Wagner & Abhash Kumar & Susan L. Beck & Maureen D. Long & George Zandt & Hernando Tavera & Cristobal Condori, 2015. "The role of ridges in the formation and longevity of flat slabs," Nature, Nature, vol. 524(7564), pages 212-215, August.
    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.

      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:gam:jeners:v:16:y:2023:i:23:p:7697-:d:1284888. 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: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.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.