Geology

Researchers uncover new information about the coldest times in the continent's history by studying a system of caves on South Australia's Limestone Coast.

Across Tasmania, there are almost 10,000 known landslides, including at the site of a large high school in Hobart.

The rocky headlands at Dark and Myrtle beaches tell a story more than 150 million years old, from before the Sydney Basin formed. It's a story anyone can read — if they have eyes to see it.

The sinkhole in Mount Gambier appeared last year after heavy rain. After seven months, the council has started to fill it in.

The settlements were occupied around 500 BC and 300 to 600 AD — a period roughly contemporaneous with the Roman Empire in Europe.

Australia is surrounded by stunning islands — you may even spend time on one this summer. Join us on a whistle-stop tour to explore how some of our most iconic isles rose from the sea.

The Glenorchy landslide of 1872 is still used to model future debris flow risks in parts of Tasmania with heavy rainfall deemed the biggest risk.

Scientists say the eruption was expected after thousands of small earthquakes, but it could continue for some time.

Researchers say an asteroid impact crater up to 520 kilometres in diameter could lie under a the town of Deniliquin.

Noongar man Michael Ward grew up in the area and says just as water helped form the rock, it's now contributing to its changing appearance.

A new method that uses artificial intelligence could help identify ancient life on Earth, as well as help in the search for it on other planets, say researchers.

The famous Argyle diamond deposit was created some 1.3 billion years ago, when a chunk of an ancient supercontinent started splitting apart, violently blasting hot rock carrying the precious stones to the surface, new research suggests.

A cave dive that is one of the most difficult to access in South Australia's south east has been closed for years but there are hopes that could change.

In the days since a deadly earthquake rippled through Morocco's High Atlas Mountain, devastating stories of loss have emerged. Seismic data and satellite imagery show the sheer scale of this destruction. 

In January 2022, a mega explosion from the Hunga Tonga-Hunga Ha'apai volcano generated a coast-battering tsunami and vivid sunsets. Now we know the extent of the eruption's devastation below the waves.

In 1994, a volcanic eruption destroyed a thriving town in PNG. Years later, houses have been rebuilt, as scientists watch and wait for the next big blast.

UNESCO will write to the WA government asking for better protection for stromatolites at Hamelin Pool as a viewing platform damaged two years ago remains broken.

After prolonged wet weather, sinkholes are appearing in Ballarat. And with no good mining records from the historic 1850s gold rush, there's no way of knowing where the next one will open up.

There is the potential for dozens of new copper mines near Central Queensland's Mount Chalmers mine, most of them on farms, a mining company says.

A local geologist says the limestone sinkhole was probably last open more than 5,000 years ago until the Mount Gambier volcano erupted and filled it with ash.

Officially we live in the geological epoch known as the Holocene, but humanity's profound impact on the Earth is prompting scientists to suggest we are in the Anthropocene.

Record rainfall has eroded a limestone cliff in SA's south-east, with cracks extending down a cliff face to the water.

A small lake near the Canada-US border has been chosen as the site that may define the start of a new geological epoch called the Anthropocene.

After nine years with a growing sinkhole impacting her business, a caravan park manager wants locals better informed of their risk of ground collapses.

3D visual of the five ancient Aboriginal artefacts.