Retrospective appurtenance of Euler and Werner deconvolution contiguity for source depth excogitation of Bouguer anomalies in the Benue Trough, Nigeria

Abstract

The leading cause of the glaring inexplicable errors in the accuracy of depth to anomaly assessments may be the technical challenge of the Euler deconvolution method from gravity surveys to perspicuously exhilarate the shape of major granitoid, tectonic lineaments, and local and regional fault systems without the existence of cogent correlative analytical simulation tools. That enigma becomes cumbersome with the increased existence of signifcantly incoherent density contrast between altered rocks or structures and their host rocks. That erudition aims to conduct a retrospective comparative analysis of the Euler and Werner deconvolution methods for efective depth excogitation of Bouguer anomalies in the Benue Trough, Nige- ria. Comparing the previously acquired Werner deconvolution for deep and shallow source data to the detailed and compre- hensive results of the Euler deconvolution gave the desired results. The study utilized various fltering techniques to analyze Bouguer anomalies and develop derivative grids to identify distinct subsurface features, such as sedimentary formations, alluvial deposit zones, and regions with high- and low-density rock minerals. Results of the comparative analysis of Euler and Werner deep source gave a minimum of 7.17 km for block 8 and a maximum of 19.8 km for block 15 for Euler. It gave a minimum of 6.89 km for block 9 and a maximum of 21.4 km for block 15. The deep source trend result gave a relatively stable deep source signal from blocks 1 to 9; while, there was inconsistency for blocks 10 and 11, then with a sudden increase in signal strength. This inconsistency is perhaps due to the complexity of the anomaly and inconsistency detected using both methods for depth resolution. Observations showed a similar trend for shallow source results. Suggestions showed that the region has potential for hydrocarbon and economic mineral exploration, making it attractive for further geologic studies. Future gravity simulators should have multiple deconvolution windows to improve modeling accuracy. That can have valu- able implications for Nigeria's oil and gas industry and other regions with similar geological characteristics.