It gives information to scientists about the past. It also provides a reference of time throught rock layers. It can identify and define geological periods of time.
Geologists use index fossils to date the rock layers they are found in and to correlate similar rock layers in different locations. Three characteristics of a good index fossil are: widespread distribution, short duration in the geologic time scale, and easily recognizable features.
No, an index fossil does not have to have been rare to be useful. The key characteristic of an index fossil is that it is easily recognizable, widespread geographically, and existed for a relatively short period of time. This allows geologists to use it to help date the rock layers in which it is found.
Index fossils are very important to geologists because they identify geological. The fossil snail is a particularly difficult animal to study.
they tell the absoute age of rcoks which they occur
The absolute age of the index fossil was determine by radioactive dating or another absolute method
Geologists use index fossils to date the rock layers they are found in and to correlate similar rock layers in different locations. Three characteristics of a good index fossil are: widespread distribution, short duration in the geologic time scale, and easily recognizable features.
No, an index fossil does not have to have been rare to be useful. The key characteristic of an index fossil is that it is easily recognizable, widespread geographically, and existed for a relatively short period of time. This allows geologists to use it to help date the rock layers in which it is found.
Index Fossil
Index fossils are very important to geologists because they identify geological. The fossil snail is a particularly difficult animal to study.
An index fossil must be of a rapidly evolving organism that only existed for a specific period of time, is easily recognizable, is abundantly preserved, and was widespread geographically. Most index fossils are therefore of marine organisms.
they tell the absoute age of rcoks which they occur
To be useful as an index fossil fuel, spices must have existed for about 1000 years.
C). a narrow time range and a wide geographic range
The absolute age of the index fossil was determine by radioactive dating or another absolute method
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.
It gives information to scientists about the past. It also provides a reference of time throught rock layers. It can identify and define geological periods of time.
Geologists can use index fossils from rock layer B to correlate the age of the rocks in another location by matching the presence of these unique fossils. Index fossils are widely distributed and lived for a short period of time, making them useful for dating rock layers. By identifying the same index fossils in both rock layers, geologists can infer that they are of similar age.