Analysis of gravity and aeromagnetic data to determine structural trend and basement depth beneath the Ajdabiya Trough in northeastern Libya

Abstract In this study, we analyse both ground gravity and aeromagnetic data in order to delineate structural trends, fault systems deduce sedimentary thicknesses within the Ajdabiya Trough Libya’s northeast. A high-pass filter a reduced-to-the-pole (RTP) transformation are applied respectively. Different filters used enhance signatures trends study area. The Werner deconvolution source parameter imaging (SPI) techniques RTP magnetic for depth estimation. Four well-data area as constraints two-dimensional forward modelling process. results show that is characterised by anomaly highs lows. analysis of shows predominant Northeast–Southwest whereas North–South lineaments Trough. Euler estimates faults depths range between 1500 9500 m. SPI basement 2500 11,500 m beneath (deepest Trough). Constrained well-data, six major layers characterize four profiles taken One high-density intrusion (about 4 km from surface) sequence. may be result rifting Sirt Basin which caused weakening crust allow mantle intrusion.