Analysis of curved folds and fault/fold terminations in the southern Upper Magdalena Valley of Colombia

► Multiple analyses were used to determine the origin of curved folds. ► Analyses include mapping structural, and paleomagnetic studies. ► Tranverse zones are defined by the along-strike termination of faults and folds. ► The Curved shape of folds is related to anisotropy of the basement. ► The regional strike-slip faults cause the clockwise rotations in La Hocha Anticline.