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Deep seismically active fracture zones in Ecuador and northern Peru

Part 2: Northern Peru

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Резюме

Сuсmемa 15 сеŭсмuческu aкmuвных рaзломных зон былa обнaруженa нa основaнuu рaсnре¶rt;еленuя очaгов землеmрясенuŭ в конmuненmaльноŭ лumосфере северного Перу. Былu оnре¶rt;елены nоложенuе u шuрuнa нa nоверхносmu, mолщuнa, уклон u мaксuмaльнaяглубuнa оm¶rt;ельных рaзломных зон u nрове¶rt;ено uх соnосmaвленuе с nоверхносmноŭгеологuеŭ u mекmонuкоŭ облaсmu. Хaрaкmер рaсnре¶rt;еленuя эmuх рaзломных зон в эквamорuaльноŭ чaсmu aн¶rt;скоŭ Южноŭ Амерuкu u сущесmвующuе ¶rt;aнные nо мехaнuзмaм землеmрясенuŭ nокaзывaюm нa восmочно-зana¶rt;ное сжamuе конmuненmaльного клuнa всле¶rt;сmвuе суб¶rt;укцuu nлumы Нaскa nо¶rt; южноaмерuкaнскuŭ конmuненm.

Summary

A system of 15 seismically active fracture zones was delineated on the basis of the distribution of earthquake foci in the continental lithosphere of northern Peru. The position and width of the outcrop, thickness, dip and maximum depth of the individual fracture zones were estimated and correlated with surface geological and tectonic phenomena. The pattern of the seismically active fracture zones in the equatorial part of Andean South America and the existing fault plane solutions indicate an east-west compression of the continental wedge induced by the subduction of the Nazca plate.

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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

Authors
  1. Václav Hanuš
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  2. Jiří Vaněk
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Additional information

Visiting professors at Instituto Geofísico and Facultad de Geología, Minas y Petróleos, Escuela Politécnica Nacional, Quito (Ecuador).

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Hanuš, V., Vaněk, J. Deep seismically active fracture zones in Ecuador and northern Peru. Stud Geophys Geod 31, 156–175 (1987). https://doi.org/10.1007/BF01638202

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  • DOI: https://doi.org/10.1007/BF01638202

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