In my discussion of the Perth geological cross-section I concluded that the thick sedimentary deposits filling the Perth Basin likely extended across the Darling Plateau to the east. It seemed to me that these thick and extensive sediments would not have ended abruptly at the Darling Fault but continued, by the Principle of Lateral Continuity, across the Yilgarn Craton. I speculated that these sediments, kilometres in thickness, were eroded from the plateau by the receding waters of Noah’s Flood.

Is there any evidence that these sediments once covered the plateau? Perhaps there are some erosional remnants that have been left on the top of the craton. We would be looking for sediments that were classified toward the bottom of the pile (Silurian, Devonian or Permian) not sediments that were from the top (Cretaceous or Tertiary). (See the section on the article about Perth geological cross-section.)

There are remnants of Cretaceous sedimentation on the Yilgarn Craton but this is not what we are looking for. We are looking for sediments that are classified of a similar ‘age’ as the base of the sediments in the Perth Basin. We keep in mind, of course, that the ‘ages’ assigned to the sedimentary layers based on the fossils need not necessarily represent an exact time correlation over the distances involved since the sediments do not represent in situ environments but areas of deposition from water that has flowed a large distance during the Inundatory stage of the Flood.

Indeed, we do find some impressive sedimentary deposits that have been preserved on the plateau. The booklet Coal Western Australia published in 1990 by the Geological Survey of Western Australia1 describes three ‘basins’ toward the south west of the Yilgarn craton….

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