Researcher explores ironstone deposits (IMAGE) McGill University Caption McGill University's Professor Galen Halverson explores for ironstone deposits along a rocky ridge in the Wernecke Mountains (Yukon, Canada). Credit Maxwell Lechte Usage Restrictions Credit image. License Original 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.