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Global-scale control of extensional tectonics on CO2 earth degassing

Author

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  • Giancarlo Tamburello

    (Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Bologna)

  • Silvia Pondrelli

    (Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Bologna)

  • Giovanni Chiodini

    (Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Bologna)

  • Dmitri Rouwet

    (Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Bologna)

Abstract

Earth degassing of CO2-rich fluids has been proven to contribute significantly to the global carbon budget. The presence of ubiquitous outgassing reveals some degree of permeability of the crust that often coincides with seismically active zones. In this study, we took advantage of the most recent global geological datasets to better understand earth degassing and how it correlates with tectonic regimes. Here we use an ad hoc point pattern analysis to show that there is a spatial correlation between CO2 discharges and the presence of active fault systems, in particular with those characterized by a normal slip type. Seismic data demonstrate the existence of a positive spatial correlation between gas discharges and extensional tectonic regimes and confirms that such processes would play a key role in creating pathways for the rising gases at micro- and macro-scales, increasing the rock permeability and connecting the deep crust to the earth surface.

Suggested Citation

  • Giancarlo Tamburello & Silvia Pondrelli & Giovanni Chiodini & Dmitri Rouwet, 2018. "Global-scale control of extensional tectonics on CO2 earth degassing," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-07087-z
    DOI: 10.1038/s41467-018-07087-z
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    Cited by:

    1. G. Tamburello & G. Chiodini & G. Ciotoli & M. Procesi & D. Rouwet & L. Sandri & N. Carbonara & C. Masciantonio, 2022. "Global thermal spring distribution and relationship to endogenous and exogenous factors," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Giovanni Chiodini & Carlo Cardellini & Giulio Bini & Francesco Frondini & Stefano Caliro & Lisa Ricci & Barbara Lucidi, 2021. "The Carbon Dioxide Emission as Indicator of the Geothermal Heat Flow: Review of Local and Regional Applications with a Special Focus on Italy," Energies, MDPI, vol. 14(20), pages 1-15, October.

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