A study investigating the complex evolution of two iconic Western Australian landmarks, has traced their transformation over thousands of years and offers a glimpse into their future.
Researchers collected sedimentary samples from multiple locations along Perth's coastline, waterways and even the sea floor to track changes which occurred as the ocean levels rose dozens of meters over thousands of years.
Study lead Dr Andreas Zametzer said the study's dive teams found particular types of mineral grains offshore, which confirmed the complex geological histories of Rottnest Island and the Swan River .These same grains can be traced into the modern Swan River estuary and the Avon River tributary which had delivered and deposited them thousands of years ago.
"It's quite shocking to think about how fast some geological processes actually happen with sea levels continuing to rise quickly."
Geography Floods Water Fossils Origin Of Life Anthropology Ancient DNA
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