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Fossils that are found over a wide area.
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∙ 10y ago
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What name is given to fossils that are widespread geographically?
"Weathering" is the process which explains the wide distribution of fossils
What is the relative age of fossils found at the top layer of rock?
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.
Which are the remains of species that existed on earth for relatively short periods and were abundant and widespread geographically?
It is index fossils.
How is a index fossil like a key bed?
Correlation by Fossils (index fossils) - Matching rock units of similar age on a large scale by using index (or guide) fossils (fossils that were widespread geographically and lived only a short time). Allows widely separated rocks of different composition to be correlated. Overlapping time ranges of several sets of index fossils are typically used.
Can fossils be used as index fossils?
Yes, index fossils are special fossils that act as geological tools enabling comparison in time of a range of geological units and environment. Normally, they are selected using certain attributes such as the fossil should be widespread, abundant, fast evolving, and independent of their environment.
What name is given to fossils that are widespread geographically?
"Weathering" is the process which explains the wide distribution of fossils
What name is given to fossils that are widespread geographically are abundant in number and limited to a short span of time?
Index Fossils
Why did scientists use trilobites as index fossils?
Trilobites were rapidly evolving and widespread organisms, making them ideal index fossils.
What is meant by paeleontology?
study of fossils and dinosaurs
What fossils are most useful for correlation tend to be?
Fossils that are the most useful for correlation tend to be found in various types of rocks, are widespread, and easy to recognize. One rock type where fossils are found is sedimentary rocks.
What is the name of the fossils that are widespread geographically and are limited to a short span of geologic time?
Index Fossils. They are very important tools for geologists and used in paleontology and stratigraphic studies.
What is the relative age of fossils found at the top layer of rock?
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.
Which are the remains of species that existed on earth for relatively short periods and were abundant and widespread geographically?
It is index fossils.
What fossils are the remains of species that existed abundantly on earth for relatively short periods of time widespread areas?
Index Fossil
How is a index fossil like a key bed?
Correlation by Fossils (index fossils) - Matching rock units of similar age on a large scale by using index (or guide) fossils (fossils that were widespread geographically and lived only a short time). Allows widely separated rocks of different composition to be correlated. Overlapping time ranges of several sets of index fossils are typically used.
How can fossils be used to date rocks?
Geologists look for index fossils in the sedimentary rock to help determine its age. Index fossils are of organisms that were widespread and only existed during a specific slice of geologic time. Finding an index fossil in a rock means that the rock dates to that specific slice of time.
Can fossils be used as index fossils?
Yes, index fossils are special fossils that act as geological tools enabling comparison in time of a range of geological units and environment. Normally, they are selected using certain attributes such as the fossil should be widespread, abundant, fast evolving, and independent of their environment.
