, Points Earned: , 1/1 Your Response: , E /// , 12 Points Missed, Percentage, 86%, The next four (4) questions refer to the diagram above. This diagram shows a geologic cross-section of some rocks, such as you might see in a cliff. The tree is growing on top of the modern surface. Rock layers A,B, C, D, E, and F are sedimentary; E contains mud cracks and fossil footprints as shown. G is igneous rock that hardened from hot, melted rock. H, I and J are faults, and K and L are unconformities. Sedimentary rocks are right-side-up unless there is some indication given to show something else. Referring to the rocks you see here ......1., Which is the correct age progression, from older (first) to younger (last)? 2

The package of sediments C, D, E, F is upside-down, as shown by the footprints and mud cracks, so C is oldest, and F the youngest of these. B is above the unconformity above all of C, D, E, and F, so is the youngest of these five., Points Earned: , 0/1 Your Response: , C 2., Which is the oldest fault: Points Earned: , 1/1 Your Response: , B 3., Which is older:, A., Unconformity K.B., Fault H.C., Fault I.D., Unconformity L.E., Fault J.Unconformity L is cut by fault I, so is older than I. Fault I is cut by fault J, so is older than J. Fault J is cut by unconformity K so is older than K. Unconformity K is cut by intrusion G so is older than G, and intrusion G is cut by fault H so is older than H. Hence, unconformity L is the oldest on this list., Correct Answer:, D Points Earned: , 1/1 Your Response: , D 4., Which is younger:,