DefinePK

Abstract

In this paper, attempt has been made to detect the basement depth underlying the Tertiary deposit and the structural lineaments within the Penyu basin by applying 3D Euler deconvolution technique to the magnetic field data. Basement depth and the structural trend estimation were done by Oasis Montaj computer software using window size (W) of 20 corresponding to about 20 X 20 km width of the magnetic data station distribution. Structural Index parameter (SI) of 0, for sheet body magnetic source was used for the faults determination. Results obtained were compared with seismic line across the study area. Basement depths from 3D Euler analysis are ranging from 3-6 km comparable to depths interpreted from seismic data. 2D sections developed of 3D Euler deconvolution map along N-S clearly displayed the arrangement of magnetic sources at depths forming normal faults with flower structures as well as the horst and graben features within the faults. The faults strike approximately in the E-W direction and dip towards the north and south. The faults positions in the seismic sections are well correlated when superimposed with the magnetic lineaments corresponding to faults obtained by Euler deconvolution.