Gordon, I don't think anyone is lying as such. Rather, both sides come to different conclusions from the evidence: creationists believe that the Bible is true and therefore conclude that the sediments were laid down catastrophically; non-creationists make the assumption that the same processes we see today whereby sediments build up on the ocean floor, have gone on uninterrupted for millions of years. Both sides use specific observations to support their conclusions, such as soil layers for old-earthers; polystrate fossils for creationsists.