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Universal ( indicating a global flood)
Uniform (sea-life tends to be on the bottom, followed by amphibians, reptiles, mammals & few men, indicating a global flood)
Distinct species (no gradual evolution)
Preservation of soft structures, no intermediate earth layer and trans-strata trees- showing rapid deposition
What else can I help you with?
Which characteristics of a fossil would you make it useful as an index fossil in determining the relative age of widely separated rock layers?
C). a narrow time range and a wide geographic range
What two things make a fossil an index fossil?
hiii
What is a tropites fossil?
A tropites fossil is a fossil of a tropites. A tropites is a genus of coiled ammonite. They only existed for about 20 million years, which makes it a good index fossil.
To compare the relative ages of fossils scientists sometimes use an easily recognized species called?
To compare the relative ages of fossils, scientists use an early recognized species called an index fossil. An index fossil must have existed for a short period time and must have covered a wide geographical range.
What are four advantages for fossil fuels?
four advantages for fossil fuels: Fossil fuels have high energy density, are readily transportable, are usable with current infrastructure, and
Describe how geologists use an index fossil and list the three characteristics of a good index fossil?
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.
What characteristics must a fossil have to be useful as an index fossil?
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.
A fossil that is used to date surrounding rock layers is?
This is called an index fossil.
What are some index fossil characteristics?
It must be distinct from other organisms. It must have lived in a very wide geographic region
What 3 requirements do index fossils have?
Index fossils must be widespread geographically, have a short stratigraphic range, and be easily identifiable. These characteristics make them useful for determining the relative ages of rock layers and correlating them across different locations.
Which characteristics of a fossil would you make it useful as an index fossil in determining the relative age of widely separated rock layers?
C). a narrow time range and a wide geographic range
What is fossils organisms that lived a short period of time called?
They are called index fossils.
What are the 3 characteristics of index fossils?
Index fossils help scientists figure out the plants and animals that were alive in a certain time period. There are different types of index fossils that are used for different amounts of time.
What must be true for a fossil organism to be useful as a index fossil?
The absolute age of the index fossil was determine by radioactive dating or another absolute method
What two things make a fossil an index fossil?
hiii
What fossil used to compare the relative ages of fossils?
An index fossil. An index fossil's age is known, allowing scientists to know the relative age of other fossils based on their position relative to the index fossil. (Ex. If a fossil is deeper in the earth, it is older than the index fossil)
What is the relative age of a fossil that can be determined by comparing it to an index fossil is called?
The relative age of a fossil that can be determined by comparing it to an index fossil is called biostratigraphic dating. This method relies on the known age range of the index fossil to estimate the relative age of the fossil being studied.
