Trace fossils as mechanical discontinuities in shales, insight for the generation of bedding-parallel veins (BPV).

Understanding shale petrophysical parameters is of interest due to its direct implications as cap rocks for CO or hydrogen storage, waste depositions, and as unconventional reservoirs. The generation and propagation of natural and induced fracture networks in such rocks is highly dependent on the mechanical behavior linked to several sedimentological parameters, as lithological discontinuities or bioturbation. This study is focused on a different sedimentological parameter that consists of trace fossils and their implication on the generation of fluid-assisted fractures, called bedding-parallel veins.