Mid-ocean ridge unfaulting revealed by magmatic intrusions

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  • Sykes, L. R. Mechanism of earthquakes and nature of faulting on the mid-oceanic ridges. J. Geophys. Res. 72, 2131–2153 (1967).

    Article 
    ADS 

    Google Scholar
     

  • Engeln, J. F., Wiens, D. A. & Stein, S. Mechanisms and depths of Atlantic transform earthquakes. J. Geophys. Res. 91, 548–577 (1986).

    Article 
    ADS 

    Google Scholar
     

  • Huang, P. Y., Solomon, S. C., Bergman, E. A. & Nabelek, J. L. Focal depths and mechanism of Mid-Atlantic Ridge earthquakes from body waveform inversion. J. Geophys. Res. 91, 579–598 (1986).

    Article 
    ADS 

    Google Scholar
     

  • Solomon, S. C., Huang, P. Y. & Meinke, L. The seismic moment budget of slowly spreading ridges. Nature 334, 58–60 (1988).

    Article 
    ADS 

    Google Scholar
     

  • Menard, H. W. & Mammerickx, J. Abyssal hills, magnetic anomalies and the East Pacific Rise. Earth Planet. Sci. Lett. 2, 465–472 (1967).

    Article 
    ADS 

    Google Scholar
     

  • Macdonald, K. C., Fox, P. J., Alexander, R. T., Pockalny, R. & Gente, P. Volcanic growth faults and the origin of Pacific abyssal hills. Nature 380, 125–129 (1996).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Olive, J.-A. et al. Sensitivity of seafloor bathymetry to climate-driven fluctuations in mid-ocean ridge magma supply. Science 350, 310–313 (2015).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Deffeyes, K. S. in Megatectonics of Continents and Oceans (eds Johnson, J. & Smith, B. L.) 194–222 (Rutgers Univ. Press, 1970).

  • Osmaston, M. F. Genesis of ocean ridge median valleys and continental rift valleys. Tectonophysics 11, 387–405 (1971).

    Article 
    ADS 

    Google Scholar
     

  • Harrison, C. G. A. Tectonics of mid-ocean ridges. Tectonophysics 22, 301–310 (1974).

    Article 
    ADS 

    Google Scholar
     

  • Macdonald, K. C. Mid-ocean ridges: fine scale tectonic, volcanic and hydrothermal processes within the plate boundary zone. Annu. Rev. Earth Planet. Sci. 10, 155–190 (1982).

    Article 
    ADS 

    Google Scholar
     

  • Needham, H. D. & Francheteau, J. Some characteristics of the Rift Valley in the Atlantic Ocean near 36° 48′ north. Earth Planet. Sci. Lett. 22, 29–43 (1974).

    Article 
    ADS 

    Google Scholar
     

  • Bergman, E. A. & Solomon, S. C. Source mechanisms of earthquakes near mid-ocean ridges from body waveform inversion: implications for the early evolution of oceanic lithosphere. J. Geophys. Res. 89, 11415–11441 (1984).

    Article 
    ADS 

    Google Scholar
     

  • Fleitout, L. & Froidevaux, C. Tectonic stresses in the lithosphere. Tectonics 2, 315–324 (1983).

    Article 
    ADS 

    Google Scholar
     

  • Wolfe, C. J., Bergman, E. A. & Solomon, S. C. Oceanic transform earthquakes with unusual mechanisms or locations: relation to fault geometry and state of stress in the adjacent lithosphere. J. Geophys. Res. 98, 16187–16211 (1993).

    Article 
    ADS 

    Google Scholar
     

  • Turcotte, D. L. Are transform faults thermal contraction cracks? J. Geophys. Res. 79, 2573–2577 (1974).

    Article 
    ADS 

    Google Scholar
     

  • Behn, M. D., Lin, J. & Zuber, M. T. Evidence for weak oceanic transform faults. Geophys. Res. Lett. 29, 2207 (2002).

    Article 
    ADS 

    Google Scholar
     

  • Janin, A. et al. Tectonic evolution of a sedimented oceanic transform fault: the Owen Transform Fault, Indian Ocean. Tectonics 42, e2023TC007747 (2023).

    Article 
    ADS 

    Google Scholar
     

  • Cesca, S., Metz, M., Büyükakpınar, P. & Dahm, T. The energetic 2022 seismic unrest related to magma intrusion at the North Mid-Atlantic Ridge. Geophys. Res. Lett. 50, e2023GL102782 (2023).

    Article 
    ADS 

    Google Scholar
     

  • Jackson, J. & McKenzie, D. Reverse-faulting earthquakes and the tectonics of slowly-spreading mid-ocean ridge axes. Earth Planet. Sci. Lett. 618, 118279 (2023).

    Article 
    CAS 

    Google Scholar
     

  • Escartín, J. et al. Central role of detachment faults in accretion of slow-spreading oceanic lithosphere. Nature 455, 790–794 (2008).

    Article 
    ADS 
    PubMed 

    Google Scholar
     

  • Searle, R. C. & Laughton, A. S. Sonar studies of the Mid-Atlantic Ridge and Kurchatov Fracture Zone. J. Geophys. Res. 82, 5313–5328 (1977).

    Article 
    ADS 

    Google Scholar
     

  • Escartín, J. et al. Quantifying tectonic strain and magmatic accretion at a slow spreading ridge segment, Mid-Atlantic Ridge, 29°N. J. Geophys. Res. 104, 10421–10437 (1999).

    Article 
    ADS 

    Google Scholar
     

  • Howell, S. et al. Magmatic and tectonic extension at the Chile Ridge: evidence for mantle controls on ridge segmentation. Geochem. Geophys. Geosyst. 17, 2354–2373 (2016).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Qin, R. & Buck, W. R. Why meter-wide dikes at spreading centers? Earth Planet. Sci. Lett. 265, 466–474 (2008).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Olive, J.-A. & Dublanchet, P. Controls on the magmatic fraction of extension at mid-ocean ridges. Earth Planet. Sci. Lett. 549, 116541 (2020).

    Article 
    CAS 

    Google Scholar
     

  • Buck, W. R., Lavier, L. L. & Poliakov, A. N. B. Modes of faulting at mid-ocean ridges. Nature 434, 719–723 (2005).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Behn, M. D. & Ito, G. Magmatic and tectonic extension at mid-ocean ridges: 1. Controls on fault characteristics. Geochem. Geophys. Geosyst. 9, Q08O10 (2008).

    Article 

    Google Scholar
     

  • Tucholke, B. E. et al. Role of melt supply in oceanic detachment faulting and formation of megamullions. Geology 36, 455–458 (2008).

    Article 
    ADS 

    Google Scholar
     

  • Liu, Z. & Buck, W. R. Global trends of axial relief and faulting at plate spreading centers imply discrete magmatic events. J. Geophys. Res. 125, e2020JB019465 (2020).

    Article 
    ADS 

    Google Scholar
     

  • Liu, Z. & Buck, W. R. Magmatic controls on axial relief and faulting at mid-ocean ridges. Earth Planet. Sci. Lett. 491, 226–237 (2018).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Qin, R. & Buck, W. R. Effect of lithospheric geometry on rift valley relief. J. Geophys. Res. 110, B03404 (2005).

    ADS 

    Google Scholar
     

  • Turcotte, D. L. & Schubert, G. Geodynamics 2nd edn (Cambridge Univ. Press, 2002).

  • Buck, W. R. Accretional curvature of lithosphere at magmatic spreading centers and the flexural support of axial highs. J. Geophys. Res. 106, 3953–3960 (2001).

    Article 
    ADS 

    Google Scholar
     

  • Ekström, G., Nettles, M. & Dziewonski, A. M. The global CMT project 2004–2010: centroid-moment tensors for 13,017 earthquakes. Phys. Earth Planet. Inter. 200–201, 1–9 (2012).

    Article 
    ADS 

    Google Scholar
     

  • Parnell-Turner, R. et al. Oceanic detachment faults generate compression in extension. Geology 45, 923–926 (2017).

    Article 
    ADS 

    Google Scholar
     

  • Mitchell, N. C., Allerton, S. & Escartín, J. Sedimentation on young ocean floor at the Mid-Atlantic Ridge, 29 °N. Mar. Geol. 148, 1–8 (1998).

    Article 
    ADS 

    Google Scholar
     

  • Ewing, J. & Ewing, M. Sediment distribution on the mid-ocean ridges with respect to spreading of the sea floor. Science 156, 1590–1592 (1967).

    Article 
    ADS 
    CAS 
    PubMed 

    Google Scholar
     

  • Divins, D. L. Total sediment thickness of the world’s oceans & marginal seas. NOAA National Geophysical Data Center (2003).

  • Johnson, H. P. & Pruis, M. J. Fluid and heat from the oceanic crustal reservoir. Earth Planet. Sci. Lett. 216, 565–574 (2003).

    Article 
    ADS 
    CAS 

    Google Scholar
     

  • Tucholke, B. W., Stewart, K. W. & Kleinrock, M. C. Long-term denudation of ocean crust in the central North Atlantic Ocean. Geology 25, 171–174 (1997).

    Article 
    ADS 

    Google Scholar
     

  • Cannat, M., Mangeney, A., Ondréas, H., Fouquet, Y. & Normand, A. High-resolution bathymetry reveals contrasting landslide activity shaping the walls of the Mid-Atlantic Ridge axial valley. Geochem. Geophys. Geosyst. 14, 996–1011 (2013).

    Article 
    ADS 

    Google Scholar
     

  • Olive, J.-A. & Escartín, J. Dependence of seismic coupling on normal fault style along the Northern Mid-Atlantic Ridge. Geochem. Geophys. Geosyst. 17, 4128–4152 (2016).

    Article 
    ADS 

    Google Scholar
     

  • Liu, Y. & Ric, J. R. Spontaneous and triggered aseismic deformation transients in a subduction fault model. J. Geophys. Res. 112, B09404 (2007).

    ADS 

    Google Scholar
     

  • Mark, H. F., Behn, M. D., Olive, J.-A. & Liu, Y. Controls on mid-ocean ridge normal fault seismicity across spreading rates from rate-and-state friction models. J. Geophys. Res 123, 6719–6733 (2018).

    Article 
    ADS 

    Google Scholar
     

  • Einarsson, P. & Brandsdóttir, B. Seismological evidence for lateral magma intrusion during the July 1978 deflation of the Krafla volcano in NE-Iceland. J. Geophys. Res. 47, 160–165 (1980).


    Google Scholar
     

  • Keir, D. et al. Evidence for focused magmatic accretion at segment centers from lateral dike injections captured beneath the Red Sea rift in Afar. Geology 37, 59–62 (2009).

    Article 
    ADS 

    Google Scholar
     

  • Bohnenstiehl, D. R., Dziak, R. P., Tolstoy, M., Fox, C. & Fowler, M. Temporal and spatial history of the 1999–2000 Endeavour Segment seismic series, Juan de Fuca Ridge. Geochem. Geophys. Geosyst. 5, Q09003 (2004).

    Article 
    ADS 

    Google Scholar
     

  • Tolstoy, M., Bohnenstiehl, D. R., Edwards, M. & Kurras, G. Seismic character of volcanic activity at the ultraslow-spreading Gakkel Ridge. Geology 29, 1139–1142 (2001).

    Article 
    ADS 

    Google Scholar
     

  • Skolotnev, S. G. et al. Crustal accretion along the northern Mid Atlantic Ridge (52°–57°N): preliminary results from expedition V53 of R/V Akademik Sergey Vavilov. Ofioliti 48, 13–30 (2023).


    Google Scholar
     

  • Ekström, G. Global detection and location of seismic sources by using surface waves. Bull. Seismol. Soc. Am. 96, 1201–1212 (2006).

    Article 

    Google Scholar
     

  • Smith, G. P. & Ekström, G. Interpretation of earthquake epicenter and CMT centroid locations, in terms of rupture length and direction. Phys. Earth Planet. Inter. 102, 123–132 (1997).

    Article 
    ADS 

    Google Scholar
     

  • Howe, M., Ekström, G. & Nettles, M. Improving relative earthquake locations using surface-wave source corrections. Geophys. J. Int. 219, 297–312 (2019).

    Article 
    ADS 

    Google Scholar
     

  • Dziewonski, A. M., Chou, T.-A. & Woodhouse, J. H. Determination of earthquake source parameters from waveform data for studies of global and regional seismicity. J. Geophys. Res. 86, 2825–2852 (1981).

    Article 
    ADS 

    Google Scholar
     

  • Ekström, G. & Dziewonski, A. M. Centroid-moment tensor solutions for 35 earthquakes in Western North America (1977-1983). Bull. Seismol. Soc. Am. 75, 23–39 (1985).

    Article 

    Google Scholar
     

  • Ekström, G. A very broad band inversion method for the recovery of earthquake source parameters. Tectonophysics 166, 73–100 (1989).

    Article 
    ADS 

    Google Scholar
     

  • Escartín, J. & Olive, J.-A. in Treatise on Geomorphology 2nd edn 847–881 (Elsevier, 2022).

  • Hughes, A. et al. Quantification of gravitational mass wasting and controls on submarine scarp morphology along the Roseau fault, Lesser Antilles. J. Geophys. Res. Earth Surface 126, e2020JF005892 (2021).

    Article 
    ADS 

    Google Scholar
     

  • Olive, J.-A. & Behn, M. D. Rapid rotation of normal faults due to flexural stresses: an explanation for the global distribution of normal fault dips. J. Geophys. Res. 119, 3722–3739 (2014).

    Article 
    ADS 

    Google Scholar
     

  • Cundall, P. A. Numerical experiments on localization in frictional materials. Ing. Arch. 59, 148–159 (1989).

    Article 

    Google Scholar
     

  • Poliakov, A. N. B., Podladchikov, Y. & Talbot, C. Initiation of salt diapirs with frictional overburdens: numerical experiments. Tectonophysics 228, 199–210 (1993).

    Article 
    ADS 

    Google Scholar
     

  • Lavier, L. L., Buck, W. R. & Poliakov, A. N. B. Factors controlling normal fault offset in an ideal brittle layer. J. Geophys. Res. 105, 23431–23442 (2000).

    Article 
    ADS 

    Google Scholar
     

  • Mackwell, S. J., Zimmerman, M. E. & Kohlstedt, D. L. High‐temperature deformation of dry diabase with application to tectonics on Venus. J. Geophys. Res. 103, 975–984 (1998).

    Article 
    ADS 

    Google Scholar
     

  • Meade, B. J. Algorithms for the calculation of exact displacements, strains, and stresses for triangular dislocation elements in a uniform elastic half space. Comput. Geosci. 33, 1064–1075 (2007).

    Article 
    ADS 

    Google Scholar
     

  • Heap, M. J. et al. Towards more realistic values of elastic moduli for volcano modelling. J. Volcanol. Geotherm. Res. 390, 106684 (2020).

    Article 
    CAS 

    Google Scholar
     

  • King, G. C. P., Stein, R. S. & Lin, J. Static stress changes and the triggering of earthquakes. Bull. Seismol. Soc. Am. 84, 935–953 (1994).


    Google Scholar
     

  • Maia, M. COLMEIA cruise. RV L’Atalante. https://doi.org/10.17600/13010010 (2013).

  • Maia, M. et al. Extreme mantle uplift and exhumation along a transpressive transform fault. Nat. Geosci. 9, 619–623 (2016).

    Article 
    ADS 
    CAS 

    Google Scholar
     

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