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Are fossils found in upper layers of sedimentary rocks are older than fossils found in no one there is a sedimentary rocks?
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What is the method of determining whether a fossil is older or younger than other fossils found in the many layers of sedimentary rock is called what?
relative dating
What two things did 19th century scientists do to determine the relative age of sedimentary rock all over the world?
They studied fossils and applied the principle that old layers of rock are below young layers! -
Where are the oldest layers of rock in a rock formation?
older fossils are usually further in the earth because the creature died before the others so the go down further and the ones that dies more recently are closer because they died more recently so haven't had the time to move further before they where found
What can cause older fossils to be found on top of yonger fossils?
erosion
One of the key principles of relative dating is the law of superposition which states that?
Younger layers of sedimentary rock are deposited on older layers
What is the method of determining whether a fossil is older or younger than other fossils found in the many layers of sedimentary rock is called what?
relative dating
Are older fossils found in higher layers of earth or lower layers?
lower0000
What statements states relative age?
"The fossils found in this rock layer are older than the fossils found in the layer above it." "The granite intrusion is younger than the surrounding sedimentary rocks." "The volcanic ash layer is slightly older than the layer of soil above it." "The erosion pattern on the hillside indicates that the granite rocks are older than the layers of sediment deposited on top of them." "The cross-cutting relationship between the fault and the layers of rock indicate that the fault is younger than the rock layers it cuts through."
What two things did 19th century scientists do to determine the relative age of sedimentary rock all over the world?
They studied fossils and applied the principle that old layers of rock are below young layers! -
Why do the lower levels of sedimentary rock on Earth show fossils of the simplest life forms?
The lower the level of a rock stratum, the older it is. Evolution is recorded in the sedimentary rock record, therefore, the simpler forms would show up in the oldest layers. The old life forms were usually very simple so the deeper down the sedimentary levels are, the older the fossils are their.
What does the principle of superposition tell you about the relative ages of sedimentary rock layers?
Younger layers are deposited on top of older layers, whether the layer is sedimentary or volcanic. Occasionally faults may result in overthrusts, where a series of older layers may be pushed over the top of younger layers. But this is rare. In general, the older layers will be the lower layers.
Younger layers of undisturbed sedimentary rock are above older layers according to?
the principal of sedimentarianism
In layers of undisturbed sedimentary rock the oldest rocks are on the?
Factors such as wind, ice, and warder contribute to sedimentary build up. As this occurs older layers of sedimentary rock are driven lower while newer layers replace them closer to the surface.
How are sedimentary layers used to date fossils?
Stratigraphic layers can be used to determine the age of a fossil in a simple manner. The layers towards the top of an outcrop are younger (Law of Superposition and Law of Original Horizontality) and the layers near the bottom are older. If a fossil is found in a lower layer then that fossil is older than any fossils found in the higher up layers.
Where are the oldest layers of rock in a rock formation?
older fossils are usually further in the earth because the creature died before the others so the go down further and the ones that dies more recently are closer because they died more recently so haven't had the time to move further before they where found
What can cause older fossils to be found on top of yonger fossils?
erosion
How is the law of superposition is used to date fossils?
Superposition is the methodology of younger sediments being deposited over older rocks. Paleontologists can determine the evolution or extinction of a species by looking at what fossils are either present or absent in a particular sedimentary layer.
