Question

1.Which rock layer was formed first? second? third?

2. Which is the youngest layer?

3. How do you know that this is the youngest layer? oldest layer of the sequence?

4. What could have possibly caused the rocks to form layers?

5. Do you think that these layers of rocks could shift, which would cause the lower layers to transpose and be at the top of the original upper layer? Explain.​

Answer 1

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Answer 2

Which rock layer was formed first? second? third?

Explanation:

1. A-The bottom layer of rock forms first, which is oldest, second is the youngest rock and third on is second-oldest rock.
2. A-Rock layers closest  to the ground surface are the youngest layer (formed most recently).
3. A-The principle of superposition states that the oldest sedimentary rock units are bottom and the youngest are the top.
4. A-sedimentary, igneous and metamorphic rocks are formed layer by physical changes such as melting, cooling, eroding, compacting or deforming.
5. A-Layered rocks from whilst debris settle from water or air. steno's regulation of unique horizontality states that maximum sediments, whilst at the start shaped in which laid down horizontally, many layered rocks are now not horizontal.