In your AGI Lab Manual, find the lab titled. “Geologic ... “Mapping Geologic
Structures” and “Strike and Dip” ... Strike and Dip: what it is and how it's
measured.
R.L. Hanna
Geology
Name ________________________ Date______________
Structural Geology Pre-Lab ⇒ In your AGI Lab Manual, find the lab titled
“Geologic Structures, Maps and Block Diagrams” refer to these pages as you work the following problems ⇒ In your lecture textbook, find the section on
“Mapping Geologic Structures” and “Strike and Dip” refer to these pages as you work the following problems ⇒ On your lecture textbook CD-ROM
o Open the chapter on Crustal Deformation o read through the CD pages until you get to the section on Mapping Geologic Structures o work your way through this section and pay special attention to Strike and Dip: what it is and how it’s measured. o work your way through the Folds section o work your way through the Faults section ⇒ What you need to know: • strike and dip • what geologic maps look like • anticlines, synclines, domes and basins • reverse and normal faults
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R.L. Hanna
Geology
Practice Strike and Dip - Click here • • • • • •
If it doesn’t make sense, keep clicking on the possible answers until you get the correct one, and then figure out how this works. When you’ve got it for the first example, go to the next one. Work through all of the online practice examples. Hold a protractor up to the screen if you can’t read the screen protractor well enough. Even if you can read the on-screen protractor, you should practice positioning the protractor over the strike and dip image so that you’ll be able to work these problems on paper (where there won’t be an onscreen protractor). If you can’t figure this out, try websearches for explanations and online tutorials for strike and dip notation. N W
E S
75
A. Which of the following best describes the strike shown above? (Hint: if you aren’t laying a protractor over the strike and dip figure, then you are most likely doing it wrong. To figure out how to position the protractor, work with the provided online Strike and Dip practice figures – see link on previous page). • N30E • N75E • S30E • S75E • S55W B. Which of the following best describes the dip direction? • NE • SE • SW • NW • North
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R.L. Hanna
Geology
C. This fold is a(n) • anticline • syncline • plunging syncline • basin • strike & dip fold
Look in your lab manual for the answer.......
D. This fold is a(n) • syncline • plunging syncline • plunging anticline • basin • strike & dip fold
Look in your lab manual for the answer.......
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R.L. Hanna
Geology
GEOLOGIC MAP
E. If Layer 5 is the oldest rock and Layer 8 is the youngest rock, and using the strike and dip information, the map above shows a(n) • anticline • syncline • dome • basin • plunging syncline • plunging anticline
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R.L. Hanna
Geology
GEOLOGIC MAP
F. If Layer 8 is the youngest rock and Layer 5 is the oldest rock, and using the strike and dip information, the map above shows a(n) • anticline • syncline • dome • basin • plunging syncline • plunging anticline
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R.L. Hanna
Geology
Find the geology of the Black Hills of South Dakota in your lecture textbook or on the internet. G. The Black Hills of South Dakota is a(n) • anticline • syncline • plunging anticline • plunging syncline • dome • basin
Find information in your lecture textbook (or the internet) about Michigan geology. H. The general geology of the Lake Michigan region is a(n) • anticline • syncline • plunging anticline • plunging syncline • dome • basin
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R.L. Hanna
Geology
Find the list/legend of geologic map symbols in your lab manual.
I. The symbol above indicates a(n) • impact crater • volcano • horizontal sedimentary rock • plunging syncline • plunging anticline • vertical sedimentary rock • dike
J. The symbol above indicates a(n) • impact crater • volcano • horizontal sedimentary rock • plunging syncline • plunging anticline • vertical sedimentary rock • sill
