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Seismological evidence on the geometry of the Orogenic System in central-northern Ecuador (South America)

Abstract : Analysis of the spatial distribution of seismicity beneath central Ecuador from a temporary network gives new insights on two main points of the Ecuadorian tectonics. Major structures in the Ecuadorian Andes are East-dipping Late Jurassic to Paleogene sutures reactivated by present-day compression. The oceanic plate is plunging continuously down to a depth of about 200 km with a dip of 25°-35°. We also show that the coastal plain acts as a buttress transmitting stresses to the Andes, beneath which deformation is concentrated.
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Submitted on : Saturday, March 12, 2022 - 7:42:01 AM
Last modification on : Monday, May 16, 2022 - 8:20:19 AM

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B. Guillier, J. -L. Chatelain, É. Jaillard, H. Yepes, G. Poupinet, et al.. Seismological evidence on the geometry of the Orogenic System in central-northern Ecuador (South America). Geophysical Research Letters, American Geophysical Union, 2001, 28, pp.3749-3752. ⟨10.1029/2001GL013257⟩. ⟨insu-03606671⟩

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