Question

Which of the following are methods of relative aging of rocks? Select the three correct answers.(2 points)
Responses

radiometric dating
radiometric dating

superposition
superposition

original horizontality
original horizontality

original angularity
original angularity

cross-cutting relationships
cross-cutting relationships

angular relationships
angular relationships

Answer 1

The three correct methods of relative aging of rocks from your list are:

1. **Superposition** - The principle that in undisturbed sedimentary layers, the oldest layers are at the bottom and the youngest are at the top.

2. **Original Horizontality** - The principle that layers of sediments are originally deposited horizontally under the action of gravity.

3. **Cross-Cutting Relationships** - The principle that if a geological feature cuts through another feature, the feature that has been cut is older.

Radiometric dating is a method of absolute dating, while original angularity and angular relationships are not standard methods used for relative dating in geology.