Galley, C., Lelievre, P., Farquharson, C., Jamieson, John W., Haroon, Amir , Graber, Sebastian, Petersen, Sven and Szitkar, Florent (2020) Modelling the geometry of the Trans-Atlantic Geotraverse seafloor massive sulphide deposit through magnetic surface geometry inversion. SEG Technical Program Expanded Abstracts, 2020 . pp. 1364-1368. DOI 10.1190/segam2020-3425506.1.

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Abstract

Due to the remote, seafloor environment in which seafloor massive sulphide deposits form, the assessment of the deposit volume and geometry through methods such as drilling are difficult and expensive. To aid in the evaluation of the resource potential of seafloor massive sulphide deposits, the threedimensional surface geometry inversion of magnetic data collected near the seafloor using autonomous underwater vehicles can further enhance geologic models produced from sparse drilling. This study applies the surface geometry inversion method to magnetic data collected above the active mound at the Trans-Atlantic Geotraverse hydrothermal vent field, creating a 3D wireframe model of the deposit and the hydrothermally altered basalt below it.

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