the absolute age of a rock is its age in years. the absolute age of sedimentary rocks can be determined by dating igneous rocks that have a cross-cutting relationship with sedimentary rocks. suppose there is additional evidence that indicates the basalt in the figure below was intruded before the limestone and shale were tilted. the basalt is 55.6 million years old, and the granite is 41.2 million years old. what is the possible absolute age at which limestone and shale were tilted?