Timmons Erickson

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  • Visting Research Associate, School of Earth and Planetary Sciences, Curtin University
A satellite image of the Clearwater Lakes, the site of two large asteroid impacts that struck Earth about 290 million years ago. (NASA Earth Observatory)

Cubic zirconia only forms under extreme temperatures, like those produced when an asteroid impacts Earth

Neeraja Chinchalkar, Western University; Gordon Osinski, Western University, and Timmons Erickson, Curtin University

Cubic zirconia, a popular diamond substitute, only occurs naturally under extreme conditions. Finding cubic zirconia in craters reveals parts of the Earth’s history.
The ancient landscape at Yarrabubba preserves traces of the world’s oldest known asteroid impact. Shutterstock

We found the world’s oldest asteroid strike in Western Australia. It might have triggered a global thaw

Aaron J. Cavosie, Curtin University; Chris Kirkland, Curtin University; Nick Timms, Curtin University; Thomas Davison, Imperial College London, and Timmons Erickson, Curtin University

The Yarrabubba asteroid landed 2.2 billion years ago. Around the same time, the icy Earth went through a big thaw.

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