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Mile 20 and 52 Rock Comparison and Questions

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Mile 20 and 52 Rock Comparison and Questions

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Why does mile 20 have layer 10 and 52 does not?
Layer 7 has the darkest color.
layer 8 is the lightest color.
Does 10 have seashells in it.

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The rocks at mile 20 and 52 are the same. Layers 5 and 10 look very similar to each other. Rock 7 is a very thin rock and rock 10 is very bulky and big. When the rocks are stacked, they are very different sizes with many different colors. Mile 20 and 52  have the same combinations and order, but different elevation.

Are the rocks a type of language, Latin, Spanish, etc.

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The rocks from layer six are both a reddish color and smooth.
The seventh layer rocks both are black with white dots and you can see historic plant fossils.
The eighth layer rocks are tan/gold color with stripes. Both have smoother sides.
Rocks in layer nine Bumpy and rough with different colors.
All rocks in the same layer are the same.

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At mile 20 there are more rock layers visible rock layers than mile 52. Also they have the same layers except for layers 4,5, and 10. Layers are all limestone, sandstone, and shale. All the rocks are similar that are on the same layer.

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Mile 52 and 20 Rock Comparison (Definitely didn't look at Hunter's)

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Mile 52 and 20 Rock Comparison (Definitely didn't look at Hunter's)

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How long did it take for these rocks to be discovered (Did it take Years, Months, weeks?)

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I notice that layers 3-6 on mile 52 are equivalent to layers 1-4 on mile 20.

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The rocks in eah layer are the same for each mile. The rocks in layer 7 for Mile 20 are the same type of rock in layer 7 of Mile 52.  The rocks in layer 7 for each mile are black and soft. They have lines going through them.  Mile 52 starts with layer 4 and Mile 20 starts with layer 6.  So in Mile 20 there are more rocks visible.

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the similarity between mile 20 and 52 is each rock with the same number share the same layer.

the difference between mile 20 and mile 52 is mile 52 has more layers than mile 20.

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Layer 7 is the the only layer made out of shale on both sites.

Are there any undiscovered layers in the Grand Canyon?

Both have the same format in layers , there in the same order.

Could a layer erode over a long period of time?

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they share some layers

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Both rocks from layer six both have a smooth texture and reddish.

Both rocks from layer 7 are only made of shale and that they have a black  with white stripes and you can see the historic plant fossils.

Both rocks from layer 8 both have white/tan color and both extremely smooth.
Both rocks from layer 9 both have a gray color and extremely rough.

All rocks in the same layer are the same.

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Mile 20 rock 9 is the same as mile 52 rock 9. some rock of mile 52 and 20 both have the same layer and similarities.

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The types of rocks between mile 52 and 20 are mostly the same. Mile 20 has the same layers as mile 52 except for layers 4 and 5. Mile 52 doesn't have a layer 10.

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They share some layers. all layers on mile 52 have similarties to layer on the mile 20