‘545-million-year-old’: Scientists discover 600 km crater in Australia linked to ancient cataclysmic event
Produced by: Tarun Mishra Designed by: Manoj Kumar
Discovery of Massive Impact Crater
The Massive Australian Precambrian-Cambrian Impact Structure (MAPCIS) is a newly identified complex crater in Australia, spanning approximately 600 km (370 miles) in diameter. The impact occurred around 545 million years ago, at the end of the Ediacaran period.
Credit: Daniel Connelly
Collaborative Research Effort
Dr. Daniel Connelly and a team of international researchers led the project, emphasizing that the discovery showcases the power of collaboration in geological research.
Geological Evidence Found
The research team discovered massive deposits of pseudotachylite breccia, also known as melt rock, near the center of the crater. These deposits are crucial in confirming the size, location, and age of the impact.
Shocked Minerals Uncovered
The scientists also found shocked minerals, including lonsdaleite (a form of shocked diamond), and high levels of iridium, which further support the hypothesis of an ancient impact event.
Reinterpretation of Geological Formations
The distinctive characteristics of the pseudotachylite breccia, originally thought to be the result of seismic activity, have now been reinterpreted as products of an ancient impact.
Implications for Earth’s Geological Past
Dr. Connelly highlighted the significance of the findings, stating that the crater and associated data open up new avenues for understanding the geological history and forces that have shaped Earth over millions of years.
Excitement for Future Research
Dr. Arif Sikder from Virginia Commonwealth University expressed enthusiasm about future studies inspired by MAPCIS, as the data offers unique insights into ancient planetary processes.
Upcoming Presentation
The research team will present their findings at the Geological Society of America’s annual meeting, Connects 2024, in Anaheim, California, bringing their discovery into the scientific spotlight for further discussion and exploration.