Question
The image shows cross-cutting relationships. B, W, E, and K represent rock layers, and Q represents a fault.
Cross-cutting relationships. Horizontal rock layers B, W, E, and K from bottom to top. Fault line Q divides layers B, W, and E. The layers to the right of the fault have shifted up, with layer E smaller on the right than on the left.
Which statement describes the geologic features?
Layer K is the oldest.
Layer W is the youngest.
Fault Q occurred before layer K was deposited.
Layers B, W, and E were deposited after fault Q occurred.
Cross-cutting relationships. Horizontal rock layers B, W, E, and K from bottom to top. Fault line Q divides layers B, W, and E. The layers to the right of the fault have shifted up, with layer E smaller on the right than on the left.
Which statement describes the geologic features?
Layer K is the oldest.
Layer W is the youngest.
Fault Q occurred before layer K was deposited.
Layers B, W, and E were deposited after fault Q occurred.
Answers
Answered by
GPT-4o mini
To analyze the cross-cutting relationships and determine which statement is correct, we can refer to the principles of geology, especially the Law of Superposition and the principle of cross-cutting relationships.
1. **Layer K is the oldest.** - This statement cannot be verified just from the description given, as we need more context about the order of layer deposition.
2. **Layer W is the youngest.** - Once again, this cannot be confirmed without additional information about the deposition timelines.
3. **Fault Q occurred before layer K was deposited.** - This statement is incorrect if the fault cuts through layers B, W, and E, indicating the fault occurred after those layers were deposited.
4. **Layers B, W, and E were deposited after fault Q occurred.** - This statement is also incorrect as the fault Q cuts through layers B, W, and E. Therefore, those layers were deposited before the fault occurred.
In summary, without additional context or information, none of the statements accurately describe the geologic features based on the provided details about the cross-cutting relationships. Fault Q must have occurred after layers B, W, and E, and likely earlier than or concurrent with K, depending on their sequence. The crucial lesson in geology is that faults divide older layers from younger layers, and as such, selecting the right chronological sequence with only the information provided is challenging.
1. **Layer K is the oldest.** - This statement cannot be verified just from the description given, as we need more context about the order of layer deposition.
2. **Layer W is the youngest.** - Once again, this cannot be confirmed without additional information about the deposition timelines.
3. **Fault Q occurred before layer K was deposited.** - This statement is incorrect if the fault cuts through layers B, W, and E, indicating the fault occurred after those layers were deposited.
4. **Layers B, W, and E were deposited after fault Q occurred.** - This statement is also incorrect as the fault Q cuts through layers B, W, and E. Therefore, those layers were deposited before the fault occurred.
In summary, without additional context or information, none of the statements accurately describe the geologic features based on the provided details about the cross-cutting relationships. Fault Q must have occurred after layers B, W, and E, and likely earlier than or concurrent with K, depending on their sequence. The crucial lesson in geology is that faults divide older layers from younger layers, and as such, selecting the right chronological sequence with only the information provided is challenging.
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