New geological research led by the University of Adelaide has revealed how ancient sea level changes and underwater canyons helped preserve some of Earth's earliest complex life forms in South Australia's Flinders Ranges.
The findings indicate that seawater flooding carved these canyons, creating space for sediment accumulation. As the canyons filled and sea levels rose, shallow shelf environments were established that supported the growth of microbial mats. This process played a crucial role in preserving soft-bodied organisms known as Ediacaran biota, which were first discovered in the region in 1946.
Researchers note that understanding these ancient environments provides essential context for studying early evolution and the emergence of animal life. The geological features of the Flinders Ranges and their fossil records also form a key part of the region's ongoing bid for UNESCO World Heritage status.
