Question
Which of the following are methods of relative aging of rocks? Select the three correct answers.(2 points)
Responses
superposition
superposition
original angularity
original angularity
angular relationships
angular relationships
original horizontality
original horizontality
cross-cutting relationships
cross-cutting relationships
radiometric dating
Responses
superposition
superposition
original angularity
original angularity
angular relationships
angular relationships
original horizontality
original horizontality
cross-cutting relationships
cross-cutting relationships
radiometric dating
Answers
GPT-4o mini
The three correct methods of relative dating of rocks are:
1. **Superposition** - A principle stating that in undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest are at the top.
2. **Original horizontality** - This principle states that layers of sediment are originally deposited horizontally under the action of gravity.
3. **Cross-cutting relationships** - This principle states that a geological feature (like a fault or an igneous intrusions) that cuts across another is younger than the feature it cuts through.
The other options, "original angularity" and "radiometric dating," are not methods of relative dating. Radiometric dating is a method of absolute dating.
1. **Superposition** - A principle stating that in undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest are at the top.
2. **Original horizontality** - This principle states that layers of sediment are originally deposited horizontally under the action of gravity.
3. **Cross-cutting relationships** - This principle states that a geological feature (like a fault or an igneous intrusions) that cuts across another is younger than the feature it cuts through.
The other options, "original angularity" and "radiometric dating," are not methods of relative dating. Radiometric dating is a method of absolute dating.