Crossbedding as we saw in Figure l is produced when grains are deposited by an a
ID: 160061 • Letter: C
Question
Crossbedding as we saw in Figure l is produced when grains are deposited by an air or water current. Inclined (crossi) beds truncated by overlying layers were ue overlying layers were used as an example of cross-cutting relationships, and in many cases the inclined laye itting relationships, and in many cases the inclined layers cut older inclined layers as well FIGURE 3 Sedimentary "top-and-bottom" indicators of relative age. (a) Mud cracks: Mud cracks are widest at the top and narrow downward. The diagram at right is therefore right-side up, indicating that the bottom-most bed is older than the bed in the middle. 308 INTERPRETING GEOLOGIC HISTORYExplanation / Answer
Crossbedding as we saw in Figure l is produced when grains are deposited by an a