Ancient Earthquake Discovered Near Caboolture

Ancient Earthquake Discovered Near Caboolture

A recent scientific dig in the Moreton Bay region has uncovered evidence of a powerful ancient earthquake, giving researchers new insight into how the local landscape was shaped and what risks could exist in the future.

The discovery was made west of Caboolture, where a fault line shows signs of a major seismic event that occurred between 20,000 and 35,000 years ago. Researchers believe the quake exceeded magnitude 6.5, which is strong enough to cause serious ground movement and surface damage.

What Researchers Found

The project was led by a team from the University of Melbourne and funded by the City of Moreton Bay. Using advanced LiDAR mapping, researchers were able to identify subtle changes in the landscape that point to past ground ruptures.

From there, excavation work focused on a feature known as a scarp, essentially a visible step in the الأرض caused by the earth shifting during the quake. Soil samples taken from different layers helped confirm both the timing and scale of the event.

This type of research is rare in Queensland and marks one of the first detailed investigations of ancient earthquake activity in the region.

Why This Matters Today

While the earthquake itself happened آلاف years ago, the findings are highly relevant for modern planning.

Local authorities, including council, Unitywater and emergency services, are using this data to better understand:

• Where future ground movement is most likely
• How severe a potential earthquake could be
• What areas may be more vulnerable

The goal is not to alarm residents, but to improve long-term planning and disaster preparedness across the region.

A Better Understanding of the Region

One of the key takeaways from this discovery is that South East Queensland is not entirely free from seismic history. Events like this are rare, but they do form part of the region’s geological story.

By studying what happened thousands of years ago, researchers and local authorities are building a clearer picture of what could happen again, even if the likelihood remains low.