The Southwest–Midwest deep crustal seismic survey project was designed to test our ongoing re-evaluation of the western margin of the Yilgarn Craton and its juxtaposition with the Perth Basin.
Line 23GSWA-SW1 (630 km) extends from the southeastern edge of the Yilgarn Craton between Ravensthorpe and Esperance in the east where it overlaps the earlier Albany–Fraser 12GA-AF2 seismic line, continuing westward across the southwestern portion of the Yilgarn Craton and into the southern Perth Basin and the Leeuwin Inlier, terminating on the coast at Hamelin Bay.
Line 23GSWA-MW1 (350 km) extends westward from the western end of the earlier Youanmi 10GA-YU3 deep crustal seismic line, crossing the Darling Fault into the Perth Basin and the southern part of the Northampton Inlier to finish on the coast at Geraldton.
Line 23GSWAMW2 (190 km) extends 150 km to the south, traverses the western edge of the Yilgarn Craton, the Neo-Paleoproterozoic Moora Basin, the Darling Fault and the Perth Basin.
The two Midwest lines are the first seismic reflection profiles across the Northampton Inlier and the Moora Basin and help to elucidate the unexposed terranes of the Pinjarra Orogen underlying the Perth Basin.
All data can be downloaded from MAGIX online.
Ordering data on an external hard drive can be completed by visiting this page on MAGIX.
Images from these seismic lines were on display at GSWA Open Day 2024 and can be viewed and downloaded through the DEMIRS eBookshop.
