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rock must exist before it can be cut, so an igneous rock cutting a sedimentary rock is younger than the sedimentary rock, and geologists do study such cross-cutting relationships, but they aren’t unconformities. Younger sedimentary rocks do occur on top of older rocks unless turned upside-down by mountain building, but this goes by the fancy name of the “principle of superposition”, not “unconformity”. And younger fossils looking more like living things than do older fossils is William Smith’s “law” of faunal succession, not an unconformity.Points Earned: 0.0/1.0 Correct Answer(s):E
2. Look at the picture above which shows a region just less than a foot across, of a stream deposit from the base of the same pile of rocks that show up in Bryce Canyon. This picture was taken in the face of a cliff in Red Canyon, just west of Bryce Canyon National Park. Aindicates a piece of limestone that has been rounded off in a stream; Bindicates a mass of sand glued together by hard-water deposits, and Cindicates another such mass of sand glued together by hard-water deposits . In order of time of formation, they are:hard-water deposits.then A was formed.then A was formed.hard-water deposits.hard-water deposits.Points Earned: 0.0/1.0 Correct A
Answer(s):3. Look at the picture above of a small dam across a stream bed (between the pink arrows) just above one of the trails into Bryce Canyon. When floods happen in the stream bed: will cause it to collapse soon.started to cascade over the dam, so the dam is not serving to trap sediment any more.the occurrence of some debris on both sides of the dam.floods.