Incorporation of geological components in alteration halos models of unconformity-related uranium deposits.

@inproceedings{houbre_incorporation_RM2024,
 abstract = {Unconformity-related uranium deposits are distinctive orebodies with significant economic concentration of metal. The formation of theses deposits involves mineral precipitation from hydrothermal fluids that alter the surrounding rocks. The observation of altered rocks, either from drilling campaigns or from geophysical data, is an indicator of possible location of a deposit. In fact, they are related to mineralization in terms of formation process, and represent observable anomalies in terms of physical and chemical properties. Extension of alteration halo is generally more significant than ore. SalterRING is a python module developed within the RING team, to implicitly and jointly model altered rocks and the geological structures, such as regional faults and unconformities. We propose to extend the SalterRING methodology to take into account sedimentary heterogeneities that could impact the alteration halo geometries. In this seminal work, we decided to consider the case of fluvial clastic deposits in the context of a meandering river. Channelized complexes display facies heterogeneities that could result in variations in hydraulic conductivity gradients. We employ an object-based methodology to model these channels, aiming to adjust consistently the implicit modelling workflow of SalterRING. To find sedimentary architectures that match the input alteration data, perturbations are applied to a randomly initialized channelized complex. A comparative analysis of performance is carried out to determine the most effective approach for modifying first-order features (such as faults and unconformities) and the sedimentary heterogeneities.},
 author = {Houbre, Louise and Marchal, Paul and Collon, Pauline and Caumon, Guillaume and Antoine, Christophe},
 booktitle = {Proc. 2024 RING Meeting},
 language = {en},
 pages = {13},
 publisher = {ASGA},
 title = {Incorporation of geological components in alteration halos models of unconformity-related uranium deposits.},
 year = {2024}
}