Exercise 8-1 Geologic Maps

NAME: SECTION: DATE:



EXERCISE 8-1

Geologic Maps
PURPOSE

The purpose of thisexercise is to help you understand how to read and interpret geologic maps.



Geologic Cross Sections
Below is a small section from a hypothetical geologic map. Use the information given on the map
to produce ageologic cross section that shows what the rocks are doing along the line B-B. Then
answer the questions.




B




Fossiliferous Medium
Conglomerate Limestone Sandstone Shale




Exercise 8-1 | Geologic Maps 119

, 1. Use the blank space belowtomake ageologic cross section from Bto B'of the structure shown in
the previous diagram.
R




2 Draw the axial plane on your crosssection.
AXIGEN
3 Draw the fold axis on your map.
4 Draw the appropriate fold symbol on your map.
S. What specific name describes the type of fold shown in your diagram?

Answer: non plungng asymne tn cad
Synci ne
6. Is the shale exposed in this areaolder or younger than the conglomerate?
Answer: youngee

7. What stratigraphicprinciple did you use to determine the relative age of the conglomerate?
Answer:. Superp0shon
8. What is the oldest rock type lithology) in this area?
Answer: onglome rate




120 Geologic Maps Exercise 8-1