A Very Stable Country

Chris Rowan, a British geologist doing post-doctoral work at the University of Johannesburg, is fascinated by our old rocks. “My geological instincts, honed back in the UK where ‘Precambrian’ is almost a synonym for fubarite, have always been somewhat dizzied by my many encounters in the past couple of years with rocks that have hung around for 2 or 3 billion years with nothing much happening to them.” Cape Town offered some relief. There old rocks really do look old.

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