G. Petrescu and G. Purcaru
Abstract
The mechanism which produced the surface earthquake of February 29, 1960 with
the epicenter in the Agadîr region is studied.
The directions of the two nodal planes and the tensional state in the focus
of the earthquake are determined.
The nodal plane (a) strikes N30°E and dips almost vertically to the SE.
The nodal plane (b) with a WSW-ESE direction dips to the NE with an angle of
53° to the horizon.
The compression tensions P acted in the WSW direction with a 41° angle
to the horizon, while the dilatation tensions T almost horizontally, in the
SSE direction.
The vector is not parallel to the direction of the Alpine tectonic axis (N55°E)
of the South Atlas folding.
The nodal plane (a) represents the fault plane (Kasba fault). The fault is
a transcurrent-normal one and the earthquake is of tensional type.
The correlation with the tectonical characteristics is considered.