Thanks Muayyad, it is a good answer and this is what in my mind....but there is a folding layer at the bottom.....I need some thoughts about what happened exactly...

There are no diapers  nor turbidite..

Thanks for your interesting Muayyad... but in fault-propagation folding , folding develops just in advance of the tip of the ramp as the ramp propagation updip, such fold form concurrently with the thrust and verges in the direction of thrusting and the fault tip propagates upsection as the fold backlimb and forelimb lengthen.....???/