Piece of the GISP2 Ice Core (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption This is a piece of the GISP2 ice core that the researchers analyzed for the isotope beryllium-10, showing silt and sand embedded in ice. Soon after this picture was taken, the ice was crushed in the University of Vermont clean lab and the sediment was isolated for analysis. Credit Paul Bierman, University of Vermont Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.