Dating exercises

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You can do this same setup with fewer or more people. It is recommended that students complete Procedure and answer the associated Interpretation Questions correctly before proceeding to. In the same way, such a transect could also show the inferred profile of the geology underfoot -- the servile rock layers and structures beneath dating exercises land from the northwest corner to the southeast corner of the map. The nonsense syllables or letters sometimes overlap other cards and are being used to introduce the students to the concept of sequencing. Why or why not. By matching partial sequences, the north oldest layers with fossils can be worked out.

Examine the geologic cross sections which follow, and determine the relative ages of the rock bodies, lettered features such as faults or surfaces of erosion, and other events such as tilting, folding, or erosion events. Always start with the oldest rock and work toward the present. List the letters in order, with the oldest at the bottom. For each of the relative dating diagrams, you are to think about them like the side view of a layer cake. In general, the oldest units are on the bottom and the youngest units are on the top. There can be lots of complexities,such as folding events, faulting, erosion events, intrusion by magma, etc. You have to put these events into the order in which they occurred, starting with the oldest, and working toward the youngest. If a fault cuts a bed, then the bed is older than the fault. For Block A above, the sedimentary units are in sequence, P, K, M, and S. A body of magma INTRUSION R has intruded or cut through all of the previous layers. So it comes next in the sequence. The intrusion is eroded off at the top. The previous layers are eroded off at the top too. So the event The diagrams below are similar to the examples above. If the block has units with letters on them, put the letters in order from oldest to youngest, like we did with the two examples above. Add words for erosion events, folding events, intrusions, faults, tilting, etc. If the block IS NOT LABELLED AT ALL blocks 7 and 8 , you are to describe the units. X's, V's, o's, dashes, black unit, white unit, bricks, dots, etc. You can also look at the lithologic unit symbols on the blocks and use the words for the rock type in place of the description of the symbol. V's are volcanic rock, X's are plutonic rocks, etc. Just put your words in order from oldest to youngest, like you did with the other diagrams.

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