Unraveling the histories of Proterozoic shales through
The majority of illite in Proterozoic shales of the McArthur Basin is believed to have formed during early marine diagenesis via reverse weathering processes in equilibrium with paleoseawater, as opposed to being detrital products of continental weathering from soils like those commonly found in Phanerozoic shales (Rafiei and Kennedy, 2019).