Name: ___________________________________ Sec: _________
Geologic Time Unit Vocabulary PART I : read pp. 650-655
1. Relative Dating: ________________________________________________________
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2. Strata : _______________________________________________________________
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3. Law of Original Horizontalilty ( Not In Book – To Be Discussed In Class ) : ____________________
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4. Law (Principle) of Superposition: __________________________________________
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_______________
A
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B
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C
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Which layer to the right is oldest? ______
Which layer to the right is youngest?______
What can you say about the age of “relative age” of layer B?
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5. Law (Principle) of Cross-Cutting Relationships: _______________________________
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Which is youngest--- B or C ? ________
( B is an intrusion )
Which is youngest ---F or E ? ________
( F is a fault )
6. Unconformity: _________________________________________________________
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7. Angular Unconformity: __________________________________________________
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Refering to the diagram on the front side:
Which letter is indicating an “angular unconformity”? ______
Between which two layers is the “angular unconformity” located? ______
8. Disconformity: _________________________________________________________
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9. Correlation: (correlate) ___________________________________________________
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10. Index Fossil: _________________________________________________________
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11. List and DESCRIBE three methods you could use to correlate rock layers in distant
locations:
(A) __________________________________________________________________
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(B) __________________________________________________________________
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(C) __________________________________________________________________
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12. Would you expect to find dinosaur fossils above or below human fossils in an
undisturbed strata sequence? __________
EXPLAIN your reasoning:
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