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Umm... let's see.

The top layer is top-soil.

The middle layer is sub-soil.

The bottom layer is parent rock....

I think you've got the answer......

;-) you're welcome!

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Q: Which layer of soil is the oldest?
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Related questions

Where are the oldest fossils formed in?

The 4th layer of soil >.<


What layer layer of soil is the finest?

The topsoil is the finest soil layer. Soil 'layers' are called horizons.


What is the third layer of soil?

What is the third layer of soil


Is the bottom layer the oldest layer?

no, the "your mom" layer is.


What is the name for a horizontal layer of soil?

There are four layers and the four layers are top layer called the organic layer, Upper soil layer, middle soil layer, and the last one is lowest layer.


Horizontal layer of soil?

horizontal layer of soil is called horizon


Which layer of the earth is soil found?

The layer with soil is the lower mantle


Top layer of soil is called?

The top layer of soil where grass grows is called Humus. The next layer is the topsoil, and the layer after that is the subsoil.


Why is it harmful to waste the top layer of soil?

The top layer of soil is the most fertile layer. It is the best for growing crops.


How is the earth's topography characterized?

layer A- the mineral rich soil layer B-the rocky mineral-producing layer layer C- the place wher rocks and soil meet layer D- the dense rocky chunks of soil layer E- pure rock layer


What are the four layers of soil and how is soil made?

the first layer is "DIRT" the second layer is "DIRT" the third layer is "DIRT" and the fourth layer is "DIRT"


When looking at layers of rock which layer is oldest?

In a normal sequence (ie one that has not been tectonically deformed) the oldest layer is the lowest layer - so the one at the base of the sequence is the oldest. This is called the "law of superposition".