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Guo C S,Sun P C,Wei D P. 2023. Geodynamical simulation of the effects of ridge subduction on the scale of the seismogenic zone south of Chile Triple Junction. Acta Seismologica Sinica,45(3):1−17 doi: 10.11939/jass.20210192
Citation: Guo C S,Sun P C,Wei D P. 2023. Geodynamical simulation of the effects of ridge subduction on the scale of the seismogenic zone south of Chile Triple Junction. Acta Seismologica Sinica45(3):1−17 doi: 10.11939/jass.20210192

Geodynamical simulation of the effects of ridge subduction on the scale of the seismogenic zone south of Chile Triple Junction

doi: 10.11939/jass.20210192
  • Received Date: 2021-12-23
  • Rev Recd Date: 2022-02-19
  • Available Online: 2023-02-23
  • Earthquakes are much more frequent to the north of Chile Triple Junction than to the south, where the thermal anomaly is also more significant. To study the effects of ridge subduction on the thermally defined seismogenic zone, two-dimensional finite element models were established based on the geology of Chile Triple Junction, the process of ridge subduction was simulated, and the effects of the initial slab dip and the convergence rate on the seismogenic zone were compared. The results show that the width of the seismogenic zone decreases during the ridge subduction, inducing earthquakes to occur much less to the south than to the north of Chile Triple Junction. By comparing the observed data in the vicinity of the profiles with the numerical simulation results, we find that the numerical simulation can roughly reflect the width of the interplate seismogenic zone and the surface heat flow in the area of Chile Triple Junction. At the same convergence distance, a larger convergence rate comes with a wider seismogenic zone and the deeper the downdip limit of the seismogenic zone, the higher the surface heat flow in the vicinity of the trench. Compared with the convergence rate, factors such as slab dip have little effect on the surface heat flow. In the process of ridge subduction, larger the slab dips leads to narrower seismogenic zones. When the effect of shear heating is included in the simulation, the width of the seismogenic zone in the process of ridge subduction can shrink to about 15 km and the depth of the seismogenic zone is small. Such a narrow and shallow seismogenic zone makes it hard for earthquakes to occur and for the Wadati-Benioff plane to be observed in some areas south of Chile Triple Junction.

     

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  • [1]
    Jia H R,Wei D P. 2021. Relativemotion of plates related to the Chile triple junction and geodynamic significance[J]. Chinese Journal of Geophysics,64(10):3567–3575 (in Chinese).
    [2]
    Li Z H,Shi Y L. 2016. Constraints of 3-D plate geometry on the dynamics of continental deep subduction[J]. Chinese Journal of Geophysics,59(8):2806–2817 (in Chinese).
    [3]
    Liu M X,Wei D P,Shi Y N. 2019. Effect of plate interface geometry on the evolution of subduction[J]. Chinese Journal of Geophysics,62(1):78–87 (in Chinese).
    [4]
    Shi Y N,Wei D P,Huangfu P P,Li Z H,Liu M X. 2019. Dynamics of thinning of overriding continental lithosphere induced by oceanic plate subduction:Numerical modeling[J]. Chinese Journal of Geophysics,62(1):63–77 (in Chinese).
    [5]
    Shen X M,Zhang H X,Ma L. 2010. Ridge subduction and the possible evidences in Chinese Altay,Xinjiang[J]. Geotectonica et Metallogenia,34(2):181–195 (in Chinese).
    [6]
    Wang Z S,Wei D P. 2018. Research progress on the formation and evolution of triple junctions of global plate motions[J]. Progress in Geophysics,33(5):1834–1843 (in Chinese).
    [7]
    Xu J J,Wang Z S,Wang S P,Wei D P. 2019. Numerical simulation of the lithospheric thermal structure in the subduction zone of the South Chile triple junction[J]. Chinese Journal of Geophysics,62(12):4729–4737 (in Chinese).
    [8]
    Zhang K L,Wei D P. 2011. On the influence factors of double seismic zones[J]. Chinese Journal of Geophysics,54(11):2838–2850 (in Chinese).
    [9]
    Agurto-Detzel H,Andreas R,Klaus B,Miller M,Iwamori H,Priestley K. 2014. Seismicity distribution in the vicinity of the Chile Triple Junction,Aysén Region,southern Chile[J]. J South Am Earth Sci,51:1–11. doi: 10.1016/j.jsames.2013.12.011
    [10]
    Assumpção M,Mei F,Andrés T,Julià J. 2013. Models of crustal thickness for South America from seismic refraction,receiver functions and surface wave tomography[J]. Tectonophysics,609:82–96. doi: 10.1016/j.tecto.2012.11.014
    [11]
    Bagherbandi M,Bai Y,Sjöberg L E,Tenzer R,Abrehdary M,Miranda S,Alcacer Sanchez J M. 2017. Effect of the lithospheric thermal state on the Moho interface:A case study in South America[J]. J South Am Earth Sci,76:198–207. doi: 10.1016/j.jsames.2017.02.010
    [12]
    Bangerth W, Dannberg J, Gassmoeller R, Heister T. 2020. ASPECT: Advanced Solver for Problems in Earth's ConvecTion, User Manual[BE/OL]. [2021-10-21]. https://www.math.clemson.edu/~heister/manual.pdf.
    [13]
    Billen M I,Gurnis M. 2001. A low viscosity wedge in subduction zones[J]. Earth Planet. Sci. Lett.,193(1-2):227–236. doi: 10.1016/S0012-821X(01)00482-4
    [14]
    Bohm M,Lüth S,Echtler H,Bataille K,Group I W. 2002. The Southern Andes between 36° and 40° S latitude:Seismicity and average seismic velocities[J]. Tectonophysics,356(4):275–289. doi: 10.1016/S0040-1951(02)00399-2
    [15]
    Bondár I,Storchak D A. 2011. Improved location procedures at the International Seismological Centre[J]. Geophys J Int,186:1220–1244. doi: 10.1111/j.1365-246X.2011.05107.x
    [16]
    Bourgois J,Michaud F. 2002. Comparison between the Chile and Mexico triple junction areas substantiates slab window development beneath northwestern Mexico during the past 12−10 Myr[J]. Earth Planet Sci Lett,201:35–44. doi: 10.1016/S0012-821X(02)00653-2
    [17]
    Breitsprecher K,Thorkelson D J. 2009. Neogene kinematic history of Nazca-Antarctic Phoenix slab windows beneath Patagonia and the Antarctic Peninsula[J]. Tectonophysics,464(1−4):10–20. doi: 10.1016/j.tecto.2008.02.013
    [18]
    Contreras-Reyes E,Flueh E R,Grevemeyer I. 2010. Tectonic control on sediment accretion and subduction off south central Chile:Implications for coseismic rupture processes of the 1960 and 2010 megathrust earthquakes[J]. Tectonics,29:1–27.
    [19]
    Eakin C M,Obrebski M,Allen R M,Boyarko D C,Brudzinski M R,Porritt R. 2010. Seismic anisotropy beneath Cascadia and the Mendocino triple junction:Interaction of the subducting slab with mantle flow[J]. Earth Planet Sci Lett,297:627–632. doi: 10.1016/j.jpgl.2010.07.015
    [20]
    Fraters M,Thieulot C,van den Berg A,Spakman W. 2019. The geodynamic world builder:A solution for complex initial conditions in numerical modeling[J]. Solid Earth Discussions,10.5:1785–1807.
    [21]
    Gleason G C,Tullis J. 1995. A flow law for dislocation creep of quartz aggregates determined with the molten salt cell[J]. Tectonophysics,247(1-4):1–23. doi: 10.1016/0040-1951(95)00011-B
    [22]
    Goddard A,Fosdick J C. 2019. Multichronometer thermochronologic modeling of migrating spreading ridge subduction in southern patagonia[J]. Geology,47(6):555–558. doi: 10.1130/G46091.1
    [23]
    Gresho P M,Lee R L,Sani R L,Maslanik M K,Eaton B E. 1987. The consistent Galerkin FEM for computing derived boundary quantities in thermal and/or fluids problems[J]. Int J Numer Meth Fl,7(4):371–394.
    [24]
    Guo C,Sun P,Wei D. 2021. Numerical simulation of the effects of wedge subduction on the lithospheric thermal structure and the seismogenic zone south of Chile Triple Junction[J]. Front Earth Sci,9:782458. doi: 10.3389/feart.2021.782458
    [25]
    Hamza V M,Dias F,Gomes A,Terceros Z. 2005. Numerical and functional representations of regional heat flow in South America[J]. Phys Earth Planet Inter,152:223–56. doi: 10.1016/j.pepi.2005.04.009
    [26]
    Heister T,Dannberg J,Gassmöller R,Bangerth W. 2017. High accuracy mantle convection simulation through modern numerical methods,II:Realistic models and problems[J]. Geophys J Int,210(2):833–851. doi: 10.1093/gji/ggx195
    [27]
    Hirth G, Kohlstedt D. 2004. Rheology of the upper mantle and the mantle wedge: A view from the experimentalists[C]// Geophysical Monograph Series. Washington D. C.: American Geophysical Union: 83–105.
    [28]
    Kirby S, Engdahl E R, Denlinger R. 1996. Intermediate-depth intraslab earthquakes and arc volcanism as physical expressions of crustal and uppermost mantle metamorphism in subducting slabs[C]// Geophysical Monograph Series. Washington D. C: American Geophysical Union: 195–214.
    [29]
    Klotz J, Abolghasem A, Khazaradze G, Heinze B, Vietor T, Hackney R, Bataille K, Maturana R, Viramonte J, Perdomo R. 2006. Long-Term Signals in the Present-Day Deformation Field of the Central and Southern Andes and Constraints on the Viscosity of the Earth’s Upper Mantle[M]. Berlin: Springer: 65–89.
    [30]
    Kronbichler M,Heister T,Bangerth W. 2012. High Accuracy mantle convection simulation through modern numerical methods[J]. Geophys J Int,191(1):12–29. doi: 10.1111/j.1365-246X.2012.05609.x
    [31]
    Lagabrielle Y,Christèle G,René C M,Bourgois J,Martin H. 2000. Magmatic–tectonic effects of high thermal regime at the site of active ridge subduction:The Chile Triple Junction model[J]. Tectonophysics,326:255–268. doi: 10.1016/S0040-1951(00)00124-4
    [32]
    Lange D,Rietbrock A,Haberland C,Bataille K,Dahm T,Tilmann F,Flüh E R. 2007. Seismicity and geometry of the south Chilean subduction zone (41.5°S—43.5°S):Implications for controlling parameters[J]. Geophys Res Lett,34:L06311.
    [33]
    Lucazeau F. 2019. Analysis and mapping of an updated terrestrial heat flow data set[J]. Geochem Geophys Geosyst,20(8):4001–4024. doi: 10.1029/2019GC008389
    [34]
    Maksymowicz A,Eduardo C,Ingo G,Flueh E. 2012. Structure and geodynamics of the post-collision zone between the Nazca–Antarctic spreading center and South America[J]. Earth Planet Sci Lett,345-348:27–37.
    [35]
    Murdie R E,Prioe D J,Styles P,Flint S S,Agar S M. 1993. Seismic response to ridge-transform subduction:Chile triple junction[J]. Geology,21:1095–1098.
    [36]
    Naliboff J,Buiter S J H. 2015. Rift reactivation and migration during multiphase extension[J]. Earth Planet Sci Lett,421:58–67. doi: 10.1016/j.jpgl.2015.03.050
    [37]
    Oleskevich D A,Hyndman R D,Wang K. 1999. The updip and downdip limits to great subduction earthquakes:Thermal and structural models of Cascadia,south Alaska,SW Japan,and Chile[J]. J Geophys Res:Solid Earth,104:14965–14991. doi: 10.1029/1999JB900060
    [38]
    Richards F D,Hoggard M J,Cowton L R,White N J. 2018. Reassessing the thermal structure of oceanic lithosphere with revised global inventories of basement depths and heat flow measurements[J]. J Geophys Res:Solid Earth,123:9136–9161. doi: 10.1029/2018JB015998
    [39]
    Rose I,Buffett B,Heister T. 2017. Stability and accuracy of free surface time integration in viscous flows[J]. Phys Earth Planet Inter,262:90–100. doi: 10.1016/j.pepi.2016.11.007
    [40]
    Rybacki E. 2006. Influence of water fugacity and activation volume on the flow properties of fine-grained anorthite aggregates[J]. J Geophys Res:Solid Earth,200-201:1–9.
    [41]
    Scherwath M,Flueh E,Grevemeyer I,Tillman F,Contreras-Reyes E,Weinrebe W. 2006. Investigating subduction zone processes in Chile[J]. Eos Trans Am Geophys Un,87(27):265–272.
    [42]
    Scherwath M,Contreras-Reyes E,Flueh E R,Grevemeyer I,Krabbenhoeft A,Papenberg C,Petersen C J,Weinrebe R W. 2009. Deep lithospheric structures along the southern central Chile margin from wide-angle P-wave modelling[J]. Geophys J Int,179:579–600. doi: 10.1111/j.1365-246X.2009.04298.x
    [43]
    Shi Y,Wei D,Li Z,Liu M Q,Liu M. 2018. Subduction mode selection during slab and mantle transition zone interaction:Numerical modeling[J]. Pure Appl Geophys,175(2):529–548. doi: 10.1007/s00024-017-1762-0,175(2):529—548
    [44]
    Simmons N A,Forte A M,Boschi L,Grand S P. 2010. GyPSuM:A joint tomographic model of mantle density and seismic wave speeds[J]. J Geophys Res,115:B12310. doi: 10.1029/2010JB007631
    [45]
    Sisson V B,Pavlis T L,Roeske S M,Thorkelson D J. 2003. Introduction:An Overview of Ridge-Trench Interactions in Modern and Ancient Settings[J]. Geol Soc Am Spec Papers,371:1–18.
    [46]
    Stein C A,Stein S. 1992. A model for the global variation in oceanic depth and heat flow with lithospheric age[J]. Nature,359(6391):123–129. doi: 10.1038/359123a0
    [47]
    Storchak D A,Harris J,Brown L,Lieser K,Shumba B,Verney R,Giacomo D D,Korger E I M. 2017. Rebuild of the Bulletin of the International Seismological Centre (ISC),Part 1:1964–1979[J]. Geosci Lett,4:32. doi: 10.1186/s40562-017-0098-z
    [48]
    Storchak D A,Harris J,Brown L,Lieser K,Shumba B,Di Giacomo D. 2020. Rebuild of the Bulletin of the International Seismological Centre (ISC),Part 2:1980–2010[J]. Geosci Lett,7:18. doi: 10.1186/s40562-020-00164-6
    [49]
    Tebbens S F,Cande S C,Kovacs L,Parra,J C,LaBrecque J L,Vergara H. 1997. The Chile ridge:A tectonic framework[J]. J Geophys Res:Solid Earth,102:12035–12059. doi: 10.1029/96JB02581
    [50]
    Tichelaar B W,Ruff L J. 1991. Seismic coupling along the Chilean subduction zone[J]. J Geophys Res,96(B7):11997. doi: 10.1029/91JB00200
    [51]
    Tetreault J L,Buiter S J H. 2012. Geodynamic models of terrane accretion:Testing the fate of island arcs,oceanic plateaus,and continental fragments in subduction zones[J]. J Geophys Res:Solid Earth,117(B8):B08403.
    [52]
    van der Hilst R,Hoop M. 2005. Banana-doughnut kernels and mantle tomography[J]. Geophys J Int,163:956–961. doi: 10.1111/j.1365-246X.2005.02817.x
    [53]
    Völker D,Ingo G,Michael S,Wang K,He J. 2011. Thermal control of the seismogenic zone of southern central Chile[J]. J Geophys Res,116:1–20.
    [54]
    Wei D, Seno T, 1998. Determination of the Amurian plate motion[C]// Mantle Dynamics and Plate Interactions in East Asia: Geodynamics Series. San Francisco: AGU: 337–346.
    [55]
    Wilks K R,Carter N L. 1990. Rheology of some continental lower crustal rocks[J]. Tectonophysics,182(1-2):57–77. doi: 10.1016/0040-1951(90)90342-6
    [56]
    Zhang K,Wei D. 2012. Correlation between plate age and layer separation of double seismic zones[J]. Earthquake Science,25:95–101. doi: 10.1007/s11589-012-0835-5
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