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They are called index fossils, fossils of organisms that were widespread, evolving quickly, and only appeared in the geologic column for a specific length of time.

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Which of the following is most accurate in helping pinpoint a time period on the geologic time scale during which a rock layer was formed?

Fossils found in the rock layer are the most accurate method for pinpointing a time period on the geologic time scale. By identifying the specific types of fossils present, scientists can determine the age of the rock layer relative to the known age ranges of those fossils.


Fossil used to compare the relative ages of fossils?

Index fossils are used to compare the relative ages of fossils. These are fossils that are known to have lived during a specific time period, helping to date the rock layers in which they are found. By identifying and comparing index fossils, scientists can determine the relative ages of different rock layers and fossils.


What layer is an old fossil found?

Fossils are typically found in sedimentary rock layers, which are formed from the accumulation of sediments over time. Fossils are most commonly found in the mid to lower layers of sedimentary rock formations. The specific layer in which a fossil is found depends on the age of the fossil and the geological history of the area.


How would a geologist determine the age of rock layers and fossils if the geologist found a never before seen rock layer that contain fossils?

First step would be relative-dating: examining the new unit in the context of known rocks above and below it. Then look for correlative formations & fossils elsewhere.


In which layer of rock shown below are the fossils the youngest?

The fossils are typically found in the uppermost layer of rock, as sedimentary rock is formed from the accumulation of materials over time. Newer layers are deposited on top of older layers, meaning that the youngest fossils would be located in the most recent (top) strata. Therefore, the youngest fossils are in the layer that is highest in the sequence shown.

Related Questions

How can fossills be used to determine the relative ages of rock layers?

fossils can be used to determine the relative age of rock layer by using the classification of fossils to find the relative ages of rocks in which fossils are found. :] hoped i helped you out.


Can fossils be used to determine the relative ages of rocks layers?

fossils can be used to determine the relative age of rock layer by using the classification of fossils to find the relative ages of rocks in which fossils are found. :] hoped i helped you out.


How fossils can be used to determine the absolute and relative age of a sedimentary rock layer?

Perhaps by carbon dating and by comparing with the evolution and dominance of various organisms in the geological time scale.


How do scientists use sedimentary rock to determine a fossils relative age?

Scientists can use sedimentary rock to determine a fossil's relative age by examining the layers in which the fossil is found. The principle of superposition states that in an undisturbed sequence of sedimentary rock layers, the oldest layer is at the bottom and the youngest layer is at the top. By identifying the layer in which the fossil is located, scientists can approximate its relative age compared to other fossils and rock layers.


Which of the following is most accurate in helping pinpoint a time period on the geologic time scale during which a rock layer was formed?

Fossils found in the rock layer are the most accurate method for pinpointing a time period on the geologic time scale. By identifying the specific types of fossils present, scientists can determine the age of the rock layer relative to the known age ranges of those fossils.


Why are index fossils so important to geologists?

Index fossils are very important to geologists because they identify geological time periods. Index fossils are found within a specific layer of rock- So when one finds the age of the rock layer, that is also the age of the index fossil.


How can you use fossils and geologic-features interpret the relative age of rock layer?

Geologists use carbon-14 to interpret the relative age of rock layers


Which example describes method of relative dating?

using fossils to determine the oldest rock layer in a canyon


How do you tell how old a fossil is by the rock layer?

You can determine the relative age of a fossil by looking at the position of the fossil in the rock layers. The closer a fossil is to the surface, the younger it is relative to fossils found deeper in the layers. To determine the absolute age of a fossil, scientists use radiometric dating techniques on the surrounding rocks to determine the age of the rock layer the fossil is found in.


Fossil used to compare the relative ages of fossils?

Index fossils are used to compare the relative ages of fossils. These are fossils that are known to have lived during a specific time period, helping to date the rock layers in which they are found. By identifying and comparing index fossils, scientists can determine the relative ages of different rock layers and fossils.


What layer of soil was dinosaur bones found in?

Fossils are not found in the soil. They are found in layers of rock after time.


What layer is an old fossil found?

Fossils are typically found in sedimentary rock layers, which are formed from the accumulation of sediments over time. Fossils are most commonly found in the mid to lower layers of sedimentary rock formations. The specific layer in which a fossil is found depends on the age of the fossil and the geological history of the area.