Yaoure Seismic Survey: Defining a Complex 3D Structural Framework with High Resolution Seismic Data

Approximately 4Moz of gold have been discovered to date at the Yaoure gold deposit in Cote d'Ivoire, demonstrating the high endowment of the area despite little exploration at depths beyond 350m. With the objective of accelerating its search for mineralisation under and nearby to the known mineralisation, Perseus completed a 16km2 3D seismic survey and a 24km regional 2D seismic line. The data have been interpreted to build a detailed 3D structural model at Yaoure and this, together with the interpretation of the 2D seismic data have provided critical new insight into the underlying mineral system by illuminating previously unseen geological features, which occur beyond the limits of traditional geophysical measurements. Preliminary results have revealed: the down-dip extensions of known mineralised structures; additional previously unknown analogues of these structures both at Yaoure and about 10km to the west; and a large intrusive body underneath the known mineralisation. This has provided targets which will be tested by drilling over the coming year. Wireline logging, elemental and spectral analysis is planned. This information will be fed back into the interpretation using data science and quantitative interpretation workflows to develop further targets and a living solid 3D litho-structural model which can be updated and refined as new information comes to hand.