Articles on Geochronology

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Limestone pinnacles of the Nambung National Park karst. Matej Lipar

Limestone and iron reveal puzzling extreme rain in Western Australia 100,000 years ago

Otherworldly karst landscapes, such as Western Australia’s famous Pinnacles, hold clues about Earth’s climate history – and future.
Two crystalline materials together: kyanite (blue) embedded in quartz (white). Photo 12/Universal Images Group via Getty Images

How do crystals form?

There are a lot of myths about crystals − for example, that they are magical rocks with healing powers. An earth scientist explains some of their amazing true science.
Today the shoreline of Lake Malawi is open, not forested the way it was before ancient humans started modifying the landscape. Jessica Thompson

Early humans used fire to permanently change the landscape tens of thousands of years ago in Stone Age Africa

Combining evidence from archaeology, geochronology and paleoenvironmental science, researchers identified how ancient humans by Lake Malawi were the first to substantially modify their environment.

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