Ice Core (IMAGE) The University of Montana Caption A core taken from Greenland's snow layer shows that meltwater has penetrated and refrozen into solid ice. Credit Courtesy of Aaron Deskins Usage Restrictions Please credit Aaron Deskins. License Licensed content 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.