Relative dating sequence
We will learn more about this method of identifying rock units and geologic time periods in next week's lab.Question 5: On the South Half, approximately how high is Hopi Point on the Coconino Plateau? Use the letter labels to refer to the distinct rock layers.
All 13 lettered events need to be included in your sequence.
Question 4: Using the relative dating method you have now practiced, derive the history of the hypothetical landscape on page 173 (also shown below).
This map displays the large-scale (also called "regional") geologic features they have inferred are present beneath the landscape.
Along with these geologic maps, we can reconstruct a regional geologic cross-section which would be like a great "geologic slice" through the landscape.
When did all this faulting take place (that is, between the times of which two sedimentary layers did the faulting occur)? Notice the "Great Angular Unconformity" shown on the North Half of the profile.
This is not labeled as such -- but see how the rocks at the bottom of the profile have been tilted while the younger rocks on top are horizontal.Include all the events which can be inferred from the drawing.List which relative dating principles apply to the order of each event.Cliffs, road cuts, and non-vegetated landscapes allow us glimpses into geology which is often hidden from view.Cliffs and road cuts are "side views" or "geologic cross-sections" of the topography which show the relative positions of various rock layers and structures at a given spot.Click Question 1: What is the sequence of events that can be inferred from the above cross-section?Tags: Adult Dating, affair dating, sex dating