Geologic Cross Sections Practice

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Questions:

1. Which layer is the oldest?

2. Which is younger: C or A?

3. Which is younger: E or D?

Answers

1. Which layer is the oldest? B

2. Which is younger: C or A? A

3. Which is younger: E or D? E

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Questions:

1. Which unit is the youngest?

2. Which is older: C or D?

3. Which is older: B or the Unconformity

Answers:

1. Which unit is the oldest? A

2. Which is older: C or D? C

3. 3. Which is older: B - B had to be there before it could be eroded down.

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Questions:

1. Which unit is the oldest?

2. Which is younger: M(fault) or K?

3. Which is older: F or E?

Answers:

1. Which unit is the oldest? H

2. Which is younger: M(fault) or K? M - because K is cut by the fault M

3. Which is older: F or E? E

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Questions:

1. Which unit is the oldest?

2. Which is younger: H(intrusion) or C?

3. Which is older: A or G?

Answers:

1. Which unit is the oldest? K

2. Which is younger: H(intrusion) or C? H

3. Which is older: A or G? G