Lake Sediments in the Newark Rift Basin (IMAGE) Proceedings of the National Academy of Sciences Caption These are lake sediments in the Newark Rift Basin in a quarry Pennsylvania showing lake level cycles of the type used in the Geological Orrery. Credit Paul E. Olsen 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.