The time dating. Are you behaving appropriately? Since it cuts across both the basement rocks and the faultit is younger than both. If the chemistry is right, and burial is rapid, mineral nodules may form around soft structures preserving three-dimensional detail. Inform a friend or family member of your plans and when and where you're going. Detrital sedimentary rocks contain clasts from separate parent rocks from unknown locations and derived ages are thus meaningless. A recent study found that 76 percent of people spend around 15 minutes on pre-date research. Tillman,Item Read More. Body structures can be preserved in great detail, but stronger materials like bone and teeth are the most likely to be preserved. Send Us Your Questions.