PESA WA SSIG 2nd Meeting

For the second meeting of the PESA WA Sedimentology and Stratigraphy Interest Group, we will be looking at one of the classic cores from Western Australia, Hovea-3, along with core from the recently drilled Mondarra-7 well. While we will get to see the Permo-Triassic boundary in all it’s glory, the main focus of this meeting will be looking at changes to shallow marine conditions in a marine transgression, with the shallow marine sands of the aptly named Dongara Sandstone showing lovely well-rounded quartz grains with a delightful oil-staining in the up section, then moving up through time into a transgressive lag and then into the thick shale of the Kockatea Shale that is a very rich oil-prone source rock at it’s base before showing many subtle variations in character over it’s 400m+ of thickness. Hovea-3 is a must-see for any connoisseur of core.

Along with Hovea-3 we’ll also have Mondarra-7 out for viewing and will look at the differences between these cores that are only a few kilometres apart.