CT Scan of the Sediment Core (VIDEO) Northumbria University This video is under embargo. Please login to access this video. Caption CT scan of the sediment core, showing sand at the top and tree roots and pollen with roots in-situ approximately 30 metres below sea bed Credit AWI/Bremen 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.