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Why is the sedimentary rock layer at the bottom of a canyon older then a sedimentary rock layer at the top of a canyon?
Wiki User
∙ 13y ago
As a rule, the oldest rocks of layered rock strata are always at the bottom, the youngest at the top. The rock at the bottom was the first to form. Layers of weathered and eroded particles (sediments) or igneous material in the form of lava, add additional weight over time, which causes the mass to sink and compress, forming new rock layers. When running water erodes a canyon, the geologic history of the land is revealed in the rock layers.
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoBecause when the top layer falls off it goes to the bottom layer and it soon gets barred by others and it becomes a fossil.
Wiki User
∙ 8y agoThis is because it formed first and it started out as just a sedimentary layer, and then it was progressively built upon over the years.
Wiki User
∙ 8y agoClose to 2 billion years.
Anonymous
SEDIMENTARY
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In general the law of superposition states that in an undeformed sequence of sedimentary rock each layer is?
Younger than the layer below it.
Is the fault older or younger than rock layer A?
older because it is at the bottom and the ones on top are younger than the bottoms
If middle layer of rock is 120 million years old what can be said about above and below layer?
top will be younger bottom older
What is a sedimentary rock in which the older rocks unless disrupted are on the bottom?
Nonfoliated rock is the answer thank you but this may not be Right QUESTION MADE NO SENSE
What are sedimentary rock composed of older rocks called?
Clastic
Are the rock formations in the grand canyon older at the top or bottom of the canyon?
The rock formations at the bottom are older.
Is the layer of rock at the bottom of a sedimentatry rock younger or older?
Older.
What is sedimentary rock in which the older rocksunless disruptedare on the bottom?
The type of sedimentary rock in which the older rocks, unless disrupted, are on the bottom is called a fossil-rich limestone. This rock contains fossil remains of prehistoric organisms.
Why are the fossils at the bottom older than the ones at the top of the soil?
I don't now you
What is the defointion for the law of superstition?
the law of superstition is the geologi principle that states that in horizontal layers of sedimentary rock.Each layer is older than the layer above it and younger than the layer below it
If in the Grand Canyon walls if a fossil imprint of a leaf is lower than a shell fossil does that mean that the leaf fossil is older than the shell fossil?
The strata or rock layers of the grand canyon walls are undisturbed. As such, a layer of rock containing a fossil, that is below an overlying rock layer will be older.
In general the law of superposition states that in an undeformed sequence of sedimentary rocks each layer is .?
older than the one above it
What is called when organisms are trapped in sedimentary rock?
when an organism is trapped in sedimentary rock, it will die and the organism will slowly decay, but it won't decay altogether and you get a fossil. the older the fossil is the lower down it will be in a sedimentary layer. that's called superposition...
In general the law of superposition states that in an undeformed sequence of sedimentary rock each layer is?
Younger than the layer below it.
Is the fault older or younger than rock layer A?
older because it is at the bottom and the ones on top are younger than the bottoms
If middle layer of rock is 120 million years old what can be said about above and below layer?
top will be younger bottom older
What is a sedimentary rock in which the older rocks unless disrupted are on the bottom?
Nonfoliated rock is the answer thank you but this may not be Right QUESTION MADE NO SENSE
