World experts study ancient Scottish rocks
PIC CAPTION: Sheared rocks from Arctic Greenland which had originally been buried ~30 km below the Earth's surface more than 1 billion years ago. CREDIT: Dr Ian Alsop, University of St Andrews
PIC CAPTION: Sheared rocks from Arctic Greenland which had originally been buried ~30 km below the Earth's surface more than 1 billion years ago. CREDIT: Dr Ian Alsop, University of St Andrews