Question 6 (8 points): What is the sequence of events that can be inferred from the above cross-section?
You do not need to complete the second half of this particular exercise (about resolving these ambiguities in the relative dating).
Question 4 (3 points): What is the sequence of events that can be inferred from the above cross-section?
Complete the sequence correctly and explain the logic and principle behind your choice for each event.
Your explanations are as important as the correct sequence in earning the points for this question.
The timing of the fault (break) in the rocks (labeled as Q) must be included in the sequence of events.
Question 5 (3 points): What is the sequence of events that can be inferred from the above cross-section?Along with these geologic maps, we can reconstruct a regional geologic cross-section which would be like a great "geologic slice" through the landscape.In the next lab, we will learn how to use local geologic information from outcrops to begin to build such regional geologic maps and geologic cross-sections, but for now we just want to practice how to read them.Applying the principles of relative dating to these rock exposures (also called "outcrops"), we can reconstruct the sequence of events that created the geologic features which we see.Events can be the deposition of a sedimentary layer, the eruption of a lava flow, the intrusion of magma to form a batholith, a fault (break) in the rock that shifts one side relative to the other side (and causes an earthquake), a fold that bends and distorts rock layers, or any number of other geologic processes.Let's return to one of the text questions we addressed as part of last week's homework.