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Seismically active fracture zones and distribution of thermal springs in Ecuador

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Резюме

Иссле¶rt;овaнuе

еомеmрuu рaсnре¶rt;еленuя очa

ов землеmрясенuŭ в конmuненmaльноŭ nлumе Южноŭ Амерuкu нa¶rt; зоноŭ суб¶rt;укцuu в Эквa¶rt;оре nокaзaло чmо эmu землеmрясенuя нaкоnляюmся в 8 оm¶rt;ельных рaсломных зонaх, коmорые uнmерnреmuровaны кaк

лубuнные сеŭсмuческu aкmuвные рaзломы вызвaнные в конmuненmрaльноŭ лumосфере nроцессом суб¶rt;укцuu. Покaзывaеmся, чmо nочmu все uзвесmные mермaльные uсmочнuкu u

u¶rt;роmермaльные uзмененuя в Эквa¶rt;оре нaблю¶rt;aюmся в выхо¶rt;aх эmuх рaзломных зон.

Summary

The analysis of the geometry of distribution of earthquake foci occurring in the continental South American plate above the subducted Nazca plate reveals that in the region of Ecuador these earthquakes accumulate in 8 well-separated fracture zones. These zones are interpreted as a system of deep seismically active fractures induced in the continental plate by the process of subduction. It is shown that the position of known thermal springs and of observed hydrothermal alterations in Ecuador correlates with the outcrops of the fracture zones.

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References

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Authors and Affiliations

  1. Institute of Geology and Geotechnics, Czechosl. Acad. Sci., Prague

    Václav Hanuš

  2. Geophysical Institute, Czechosl. Acad. Sci., Prague

    Jiří Vaněk

  3. Instituto Ecuatoriano de Electrificación, Quito

    Gaston Sandoval

Authors
  1. Václav Hanuš
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  2. Jiří Vaněk
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  3. Gaston Sandoval
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Hanuš, V., Vaněk, J. & Sandoval, G. Seismically active fracture zones and distribution of thermal springs in Ecuador. Stud Geophys Geod 31, 258–265 (1987). https://doi.org/10.1007/BF01624757

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  • DOI: https://doi.org/10.1007/BF01624757

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