Symmetry as an Alternative Seismic Attribute: Case Studies from the Hard Rock and Soft Rock Environments, South Africa

Summary Symmetry is an important notion in mathematics and science. We propose a seismic attribute based on the concept of symmetry by means of the windowed Fourier transform. This attribute proves useful in the qualitative interpretation of reflection seismic data compared to conventional complex-trace seismic attributes such as the instantaneous amplitude, frequency and phase. We show through a case study that symmetry not only illuminates geological features, it enhances seismic reflectivity and continuity of thin layered ore bodies and gas reservoirs. For this reason, symmetry can be considered as a new alternative seismic attribute that can be used for hard rock and soft rock seismic interpretation to better delineate edges (faults), hydrocarbon reservoirs, mineral ore bodies and thin lithological boundaries. The attribute may assist to optimize the mining and oil and gas industry in a cost-effective way.