Eroded Marsh After Oil Spill (IMAGE) Duke University Caption Duke University scientist Brian Silliman surveys marsh loss in St. Mary Parish, La. which he says was caused by oil from the 2010 Deepwater Horizon oil spill. Credit Duke University Usage Restrictions None 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.