Caracterización morfotectónica de la estructura anticlinal del borde oriental de la cuenca de Quito, utilizando evidencia geofísica y geomorfológica

Abstract

The tectonic processes and their structural influence have been of great debate throughout history, the large orogenic chains are the result of great compressive efforts that generate more than surveys, multiple zones of weakness, which are manifested by the presence of faults. This study interprets a structural model for the Quito basin, conformed by reverse faults that evolve in east direction, starting from an old fault without relevant seismic activity “Falla Nono” located in western zones. These new fault branches not only displaces and condition the current tectonic activity of the basin, but are responsible for the lifting of the antiforms along the eastern edge of Quito city. The objective of this study is to characterize activity, movement and influence of the faults along the antiforms, by obtaining unique results on resistivimetric variabilities present up to 1.8 km under the surface. Through the propagation of electric and magnetic waves in the time domain produced and detected by the STRATAGEM equipment, by means of soundings distributed along the Quito basin, accommodated in three profiles “resistividad vs. depth” perpendicular to said antiforms oriented in E-W direction.