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If the fossils that the scientists find are very evolutionarily similar, for example, if they are the same species or genus, then that means that the sedimentary rock layers have some correlation to each other since the two extinct animals that turned into the fossils most likely lived during the same time period. This hints that the two rock layers were both exposed to the atmosphere during the same time period.
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∙ 11y agoAnonymous
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What do scientists use index fossils for?
Geologists use index fossils to define and identify geologic periods.
What are index fossils and how are they used to determine the absolute age of sedimentary rocks?
Index fossils can be used to help determine the relative age of rock layers. Index fossils are from species that only existed for a short time. Index fossils are found in rock layers. Trilobites and Graptolites are index fossils.
How do you suppose geologists in the field find clues about the distribution of rock types?
Discontinuity surfaces (bedding planes and various types of unconformities), significant changes in mineralogy or grain size or changes in the types of fossils present in the rock may all help identify differing rock layers.
Why are artifacts and fossils important to historians?
Artifacts are important to Historians (and Archaeologists) because they are actual evidence of past human activity. However fossils are NOT important to historians as they are too old, they ARE important to Geologists.
How can index fossils help scientists figure out the ages of rock layers?
index fossils are important for index fossils because they use them to match up rock layers in certain locations that may be far apart! they are ALSO important to scientists because it helps them with relative age!.. HOPE THIS HELPED:]
How do fossils help geologists?
Fossils help geologists discover new species. Fossils also explain and show the age of the specimen and change in life forms.
What do scientists use index fossils for?
Geologists use index fossils to define and identify geologic periods.
How do geologist us the geologic column?
To help them interpret rock sequence .
What are index fossils and how are they used to determine the absolute age of sedimentary rock?
Index fossils can be used to help determine the relative age of rock layers. Index fossils are from species that only existed for a short time. Index fossils are found in rock layers. Trilobites and Graptolites are index fossils.
What are index fossils and how are they used to determine the absolute age of sedimentary rocks?
Index fossils can be used to help determine the relative age of rock layers. Index fossils are from species that only existed for a short time. Index fossils are found in rock layers. Trilobites and Graptolites are index fossils.
What two ways geologists use the geologic column?
1.Geologists use the geologic column to help them interperet rocks sequences. 2.they use to help them identify rock layers in complicated rock sequence.
What are index fossil and how are they used to determined the absolute age of sedimentary rock?
Index fossils can be used to help determine the relative age of rock layers. Index fossils are from species that only existed for a short time. Index fossils are found in rock layers. Trilobites and Graptolites are index fossils.
How do you suppose geologists in the field find clues about the distribution of rock types?
Discontinuity surfaces (bedding planes and various types of unconformities), significant changes in mineralogy or grain size or changes in the types of fossils present in the rock may all help identify differing rock layers.
What is the geologic columnused in relative dating?
1.Geologists use the geologic column to help them interperet rocks sequences. 2.they use to help them identify rock layers in complicated rock sequence.
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.
How do the fossils in rock layers help scientists identify the age of the rock?
well the fossils are trace fossils so we are gonna have too go with trace fossils cause it seems like it knows were it is located the print and the hard rock that has been some places for millions and millions of years.
Why are artifacts and fossils important to historians?
Artifacts are important to Historians (and Archaeologists) because they are actual evidence of past human activity. However fossils are NOT important to historians as they are too old, they ARE important to Geologists.
