Relative Dating, its where the paleontologists date the fossils according to the layer of soil that the fossil was found compared to other fossils that were carbon dated that were in the same soil layer.
The method used will be determined by the rock type, but the age of a rock will be determined by a determination of the amount of decay of a radioactive isotope, either contained in the rock, or in a geologic layer of rock coinciding with a fossil.
I don't know how you arrived at that conclusion. But let say you're correct and there are some scientist that resort to circular reasoning; the finding will surely be debunked by other scientist and the original scientist will surely be disgraced. This is what separate evolution from creation; Creation is based on the supernatural and the faithful should believe the inerrancy of the Bible no matter what.
By using relative age. Over a long period of time, sediment will, layer by layer, coat and cover the fossil, making it difficult for paleontologists and scientists to figure out how old the fossil really is.
The age of the rock layer
Relative Dating, its where the paleontologists date the fossils according to the layer of soil that the fossil was found compared to other fossils that were carbon dated that were in the same soil 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.
Relative dating provides an estimated age of a rock layer or fossil based on its position in relation to other rock layers or fossils. It helps determine the sequence of events in Earth's history, but does not provide an exact numerical age.
For relatively recent fossils, dating by carbon 14 is the most accurate method. For older fossils it is necessary to analyse the geological layer in which they are found; fossils located in an undisturbed geological layer of a certain age, are the same age as the layer in which they are found, necessarily.
Relative dating in biology refers to estimating the age of a fossil or rock layer based on its position relative to other fossils or rock layers. It does not provide an exact age, but rather an estimation of the order of events. This method relies on principles like superposition and stratigraphy to determine the relative age of different geological features.
I can answer part of this question. If they can scientists use carbon dating to find the closest age of the fossil. If carbon dating is not possible they use a different technique such as this: If they look at the layers of the rocks, the rocks before and after the layer of rock the fossil was found in, can show an estimate of how old the fossil can be if they know the age of the rock layers before and after its layer.
Relative dating methods, such as stratigraphy and seriation, determine an artifact's age by comparing it to other objects found in the same layer or context. By analyzing the position of the artifact within the site and its stylistic attributes, archaeologists can estimate its age in relation to other objects.
By using the geologic time scale. Certain organisms are only found during certain times and if a fossil of one of these organisms is found then you can determine the relative age of the fossil.
One of the biggest fallacies of fossil dating is that they use the rock layer to help determine the age of the fossils, but the fossils are also used to help determine the age of the rock layer.
Relative dating provides an estimate of the age of a layer or fossil in relation to other layers or fossils. It does not provide an exact age in years, but instead helps determine whether something is older or younger than something else based on the order in which they are found.
Geologists often use relative dating. When a fossil is found in a rock layer that has been dated, they know the age. If the fossil is found between two dated rock layers, they have an approximate age. If it's found above a dated layer, than it's younger, and vice versa. To date a layer of rock, radiometric dating is used. This measures the trace amount of a radioactive isotope, such as a uranium isotope or potassium isotope, which is then compared to its decay product, lead or argon, respectively, for these examples. More decay product and less of the original isotope means the layer is older, and vice versa. Index fossils can also be used. These are common fossils with a wide distribution that only existed for a short time. Then, when these are found in a rock layer, it is known that the rock layer formed when that organism existed.
using fossils to determine the oldest rock layer in a canyon