Question

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

original horizontality
original horizontality

cross-cutting relationships
cross-cutting relationships

superposition
superposition

angular relationships
angular relationships

radiometric dating
radiometric dating

original angularity

Answer 1

The three correct methods of relative aging of rocks are:

1. **Original Horizontality** - This principle states that layers of sediment are originally deposited horizontally under the action of gravity.

2. **Cross-Cutting Relationships** - This principle holds that if a geological feature cuts through another feature, the one that has been cut is older.

3. **Superposition** - In an undeformed sequence of sedimentary rocks, the oldest layers are at the bottom and the youngest are at the top.

The other options listed (angular relationships, radiometric dating, and original angularity) are not primary methods used for relative dating. Radiometric dating, in particular, is a method of absolute dating.