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Answered 2014-09-17 19:19:43

The age of a plant or animal in a fossil is determined by radiocarbon dating. This means scientists measure the amount of a special type of carbon in the fossil, to determine the date.

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How are relative dates of fossils determined?

by placement in colums to records the fossils age and what stage the fossil is in .

How can radioactive isotopes determine the age of fossils?

By determining the age of igneous intrusions that cut through or are on top of or below a sedimentary layer containing fossils, a substantiated age range can be determined for the age of the fossils.

Are fossils in physics?

No, fossils are the remaining traces of a plant or animal matter that existed in a past geological age. Physics is the study of all aspects of the interactions between energy and matter.

How can fossil correlation be used to determine the ages of rock layer?

Fossil correlation uses the principle that rock strata containing fossils of the same age must be the same age as the fossils. Geologists can compare the known lifespan of the fossilized plant or animal to postulate the age of the rock layers.

Why do scientist use radioisotopes to find the age of fossils?

Radiometric dating of fossils is not possible beyond roughly 70,000 years. However, when fossils are found in association with strata of volcanic and metamorphic rocks which can be dated radiometrically, a very accurate age of the fossils can be determined.

How the relative age of a fossil is determined by studying layers of rock?

It is determined because in layers of rocks the fossils are found so the layers of rocks give information to the scientist about the age of a fossil so like that the relative age of a fossil is determined.

Radioactive dating used for finding what in fossils?

Radioactive dating is used to find the absolute age of the rock in which the fossils are found, thus providing a fairly accurate age of the fossil. Please see the link provided on how the age of a fossil is determined.

How can the relative age of a rock be determined?

It can be determined by the relative position and depth of its occurrence compared to other horizontally occurring strata and additionally by the types of index fossils it may contain.

How do you tell how old sediments are?

Sediments that have lithified, or become sedimentary rock, often contain marine and non-marine animal and plant fossils. These fossils are of organisms that existed only in certain time periods in Earth's history. Identifying the fossils reveals a general age of the rock, give or take some tens of millions of years. Actual age can be roughly estimated by means of radiometric dating.

How is the age of a rock or rock layer determined?

A sedimentary rock's age can be estimated (relative age) by index fossils that may be present in the rock. Certain fossils only appear in rocks from a certain geologic age. This method is known as 'relative dating' and the age is called the 'relative age'. The 'absolute' geologic age of the strata which bear the index fossils has been determined by the radiometric age of igneous intrusions which are relative to the layers of sedimentary rock, according to the Law of Superposition and the Law of Horizontality. For igneous and metamorphic rock, age is determined primarily by radiometric dating based on decay of isotopes found within the rock. For some igneous rocks, the age of the rock is known precisely from historical records correlating to its formation.

What is the difference between a fossil of a plant or organism and a trace fossil of an animal?

well to be honest they are different from each other becauce of the rock layer and other facts about the fossils and the relative age rock if notified by the fossils so anyways a fossil of plant is like a fossil but just of plant ok listen i really dont know wat im doing now so please help me

What techniques do scientist use to determine the age of rocks and fossils?

Superposition is the term that describes the relating the age of a layer of rock by comparing it to the age of a layer above it. New rock is superpositioned over old rock. Geologists work backwards from present with this assumption. Fossils are found in those layers that help the geologists to index the layers when there is a discontinuity. If a geologist knows when an animal or plant became extinct the geologist knows that the rock is earlier than that date if the fossil of that animal is in it.

How do scientist use fossils to to find out the age of rocks?

Usually it is rocks which determine the age of fossils, but if the fossils discovered are already of a known age, the age of the rock can be inferred.

Do index fossils tell the relative or absolute age of fossils?

Index fossils indicate the relative age of rocks and fossils found in certain sedimentary formations.

Are preserved animal tracks index fossils?

According to the definition of "Index Fossils" the answer is no. The definition of an "Index Fossil" is - remains of an organism that lived in a particular geological age. While the track itself may indicate the age of sediment, it is not a fossil.

How do scientists know that the earth has evolved?

From the history that is revealed in rock, particularly in fossils and the age of rock as determined by very precise radiometric dating techniques.

How is the relative age of fossils determined?

It is generally determined by how long it has waisted away or if it has reached a certain disintegrating phase (an example would be a half-life). By learning how long a fossils minerals and dead cells have wasted away biologists can learn how old a fossil is relative to a period or our own time on earth.

How is a pig's age determined?

how is a pigs age determined

Can radiocarbon dating be used to determine the age of pottery?

No. radio carbon dating is only efficient for the fossils of plants or animals. As pottery is an abiotic substance its age cannot be determined by carbon dating

What isotopes are used to determine the age of dinosaur bones?

Some of the isotopes used for this purpose are uranium-238, uranium-235 and potassium-40. However often the dates are not determined directly from isotopes in the fossils themselves, but instead from isotopes in layers of volcanic rocks above and below the fossils and the age of the fossils are estimated between these two measured dates.

How the age of fossils of plant and animals etc is determined?

well it mostly depends on the ways and types 1) the logical approach- in this the things (fossils) you find deeper will be more older than the one found on the surface. 2)the constituent study- the method work by calculating the number of isotopes of an element present in the fossil 3)carbon dating - estimating the number of cabon14 isotope.

How the absolute age of the brachiopod was found?

Absolute age differs from relative age in that it states exactly how old something is, instead of how old it is compared to something else. The age of most fossils, including those of brachiopods, are determined using the carbon dating method.

What fossils are useful in determining the relative age of rocks?

Index fossils

How is a pig age length of gestation determined?

their age is determined by weight

How can fossils be used to determine the relative age of rock layer?

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.