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PESA Sedimentology and Stratigraphy Interest Group 3rd Meeting – Additional Session
Friday, 7 August, 2020 @ 1:00 pm - 4:00 pm (Australia/Perth time)$10.00
PESA Sedimentology and Stratigraphy Interest Group 3rd meeting – ADDITIONAL SESSION
The Early Permian of the Perth Basin
7th of August, 1 – 4pm Carlisle core library
As the first session quickly sold out Vincent and Darren have organised an additional session on 7th August.
After the great reception given to our Late Permian nearshore sands getting transgressed and liberally covered with shale and source rock, for the next SSIG meeting we’re going to look at what happens with Early Permian nearshore sands when relative sea-level starts to regress. To do that we’re going to look at the Waitsia-1, Corybas-1, Cliff Head-3 and Dunsborough-2 cores and admire the transition from the nearshore High Cliff Sandstone, through to the aptly ‘Bit Basher Shale’, identify the elusive the Kingia Fm (and maybe even discuss what it is and isn’t) before launching headlong into the Glossopteris swamps preserved in the Irwin River Coal Measures. All of these facies are absolutely full to the brim with lovely sedimentary features and a wonderfully diverse ichnofauna so they will make interesting viewing for anyone that enjoys a good core and should be compelling for anyone who holds the Early Permian of the northern Perth Basin dear to their hearts.
Next we are planning to look at the Oxfordian section from the Montara region and postulate on whether the ‘Montara Delta’ is real or just a ghost left from a simpler time. We’ll go through a number of key cores from the area and look at the relationships between the sand bodies and more importantly pull out some fascinating information from the ichnofacies that should challenge the way this area is thought to have been deposited.
Don’t forget to book early as we have a hard limit of 20 attendees and February’s SSIG meeting was fully booked out. The next meeting starts at 1pm at the GSWA Carlisle Core Library on the 17th of July.