Relative+dating+lab+worksheet
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School
Liberty University *
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Course
9994
Subject
Geology
Date
Apr 3, 2024
Type
Pages
5
Uploaded by ElderQuailPerson913
1 RELATIVE DATING LAB Name: Date: Objective To identify the sequence of events when viewing a rock outcrop Materials •
Cross-sections of the rock outcrops for each part (you can print them if it helps you) •
Worksheet opened to record the data as you work through each cross-section Procedure •
Read through all the steps below and then complete the Purpose question in the worksheet. •
Determine the sequence of events for each of the cross-sections and list them in order from oldest to the most recent (youngest) and put the letters in that order on the worksheet. •
Make sure to save your pdf after you have completed the lab using the instructions in the class documents in this course. •
Upload your pdf into the assignment upload for this lab. Purpose (5 pts) Write a 1 sentence purpose statement for this lab.
2 Cross Section I List the sequence of events from oldest to youngest (most recent) using the letters A–E (no letter is used twice) on Cross Section I. (4 pts per each blank = 20 pts total) List the sequence from oldest to youngest below: 1.
. 2.
. 3.
. 4.
. 5.
. Cross Section II List the sequence of events from oldest to youngest (most recent) using the letters A–G, and folding on Cross Section II. There are 8 lines to file in with one answer given, none of the letters are used twice. (2 pts per each blank = 14 pts total) NOTE: The letters ‘A’ and ‘F’ are referring to faults on the cross-section. List the sequence from oldest to youngest below: 1.
. 2.
Folding . 3.
. 4.
. 5.
Erosion . 6.
. 7.
. 8.
. 9.
.
3 Cross Section III List the sequence of these events from oldest to youngest (most recent) depicted in Cross Section III according to the Word Bank below. No words are used twice. (2 pts per blank = 24 pts total) Word Bank Batholith Layer D Fault 2 Layer A Layer E Erosion Layer B Dike Sill Layer C Fault 1 Unconformity List the sequence from oldest to youngest below: 1.
. 2.
. 3.
. 4.
. 5.
. 6.
. 7.
. 8.
. 9.
. 10.
. 11.
. 12.
.. Observation & Analysis Please state your answers in 2-3 sentences. 1.
Choose two of the geologic events in Cross Section I and explain how you knew where to place them relative to the other rock layers. (5 pts)
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4 2.
Explain how you knew where to place the dike (D) in the sequence of events in Cross Section II. (5 pts) 3.
Explain how you decided where to place Fault 1 relative to Fault 2 in the sequence of events in Cross Section III. (5 pts) Conclusion 1.
Did you have any difficulty placing the sequence of events in order? Why or why not? (6 pts) 2.
Which of the three laws (Law of Superposition, Law of Original Horizontality, and Law of Cross-Cutting Relationships) was most helpful to you in identifying the sequence of events in each of the three cross sections? Why? 6 pts)
5 Application (10 pts) Locate the image near the top of the article entitled More and More Wrong Dates
. You do not have to read the article, but notice where the author has drawn attention to the Cardenas Basalt layer and the basaltic lava flows of the Uinkerat Plateau with red arrows. This image depicts a cross section of the Grand Canyon. Many conventional scientists rely on radiometric dating as evidence that the rocks on Earth are millions of years old. Some Young-Earth Creation scientists did a test on the radiometric dates for the Cardenas Basalts positioned way down deep in the Grand Canyon and the basaltic lava flows on top. The creationists were convinced that the tests conventional scientists use are flawed. As it turned out, one of the tests incorrectly determined that the basaltic lava flows on top were older in age than the Cardenas basalts on the bottom! If these dates were accurate, which relative dating law would be broken in this situation?