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11 January 2017

More Messengers from the Mantle

Since I showed off the 3D kimberlite intrusion breccias yesterday, I feel as if I owe you some other photos from that lovely exhibit at the IGC. I apologize for the poor quality of these photos – the gorgeous samples were behind glass and brightly lit, which made photography difficult. But the rocks are sooooooooo pretty, I think you’ll enjoy viewing them just the same. Let’s start with a gargantuan …


12 November 2015

Dialing in 5 GPa on a diamond anvil cell

On a visit to the Geophysical Laboratory of the Carnegie Institution, Callan contemplates a diamond anvil cell and with a small adjustment changes the pressure by an extraordinary amount.