Claim: Small burrows and minor sediment deformation in the Lockatong Formation (a mapped bedrock unit in Pennsylvania, New Jersey, and New York) are also known to occur; however, these shales and their layers become finer, flatter, and less disturbed as the lakes deepen.
Evidence: The Triassic Lockatong Formation is a mapped bedrock unit in Pennsylvania, New Jersey, and New York. Small burrows and minor sediment deformation are also known to occur. However, these shales and their layers become finer, flatter, and less disturbed as the lakes deepen.