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What is the best evidence that many different geologic periods are represented in Virginia?
The presence of fossils of different ages
Paleontologists noticed that these were the same on different continents even though the continents were separated by ocean?
The same rocks and minerals from the same batch, dinosaur fossils dating back to the same time periods, natural landforms and structures can be found on completely separate continents. This evidence supports the Plate Techtonics and Continental Drift theories.
The sum of all the fossils that exist is called the?
The sum of all the fossils that exist is called that fossil record. It includes fossils from all geologic time periods.
What is a fossil that can be used as a marker in time called?
Index fossils (also known as guide fossils, indicator fossils or zone fossils) are fossils used to define and identify geologic periods (or faunal stages). They work on the premise that, although different sediments may look different depending on the conditions under which they were laid down, they may include the remains of the same species of fossil. If the species concerned were short-lived (in geological terms, lasting a few hundred thousand years), then it is certain that the sediments in question were deposited within that narrow time period. The shorter the lifespan of a species, the more precisely different sediments can be correlated, and so rapidly evolving types of fossils are particularly valuable. The best index fossils are common, easy-to-identify at species level, and have a broad distribution-otherwise the likelihood of finding and recognizing one in the two sediments is minor. --- Wikipedia
Why are fossils important to evolution?
Fossils give a record as to what organisms lived throughout different time periods. Generally speaking, the lower layers of soil show the oldest fossils, which aids scientists in following the progression of evolution of an organism. Also, radioactive carbon dating is used in dating how old a fossil is by finding the amount of carbon^14, and then calculating how many half lives have passed to reach this amount.
What is the best evidence that many different geologic periods are represented in Virginia?
The presence of fossils of different ages
How do scientists determine the boundaries of the different time periods?
Scientists determine the boundaries of different time periods by studying the rock layers, fossils, and other evidence found in the Earth's crust. They use techniques such as radiometric dating to determine the age of the rocks and fossils, which helps them establish the boundaries and define the different time periods in Earth's history.
What would the fossils tell you about the history of that area?
If you found a fossil, and you knew which animal it were and how it prefered to live. You could tell how the weather was, if the area was covered with trees, or a more desert-like area- dependant on how the animal lived. Maybe even compare it to other fossils, to give a more precise estimate on how it was back in the day. By looking at different fossils from different time periods, you would be able to see the development of the area trough the ages.
What qualifications do archaeologists need?
Archeology is a subject studied at university (or college). It often includes courses in different periods, excavations, preserving, handling material and so on. In some countries and areas it's possible to join groups of amateur archaeologists who helps out the actual archaeologists on excavations without an education.
How paleontologists use trilobite use fossils as index fossils for various geologic time periods?
yeah
Paleontologists noticed that these were the same on different continents even though the continents were separated by ocean?
The same rocks and minerals from the same batch, dinosaur fossils dating back to the same time periods, natural landforms and structures can be found on completely separate continents. This evidence supports the Plate Techtonics and Continental Drift theories.
No single rock sequence records the entire history of life on Earth Paleontologists must compare fossils in rock sequences in one area with fossils in rock sequences in other areas in order to relate?
Paleontologists compare fossils from different rock sequences to piece together the history of life on Earth because not all rock sequences preserve the same time periods or types of organisms. By studying fossils from multiple locations, scientists can create a more comprehensive and accurate picture of the evolutionary history of life. This allows them to better understand how organisms have evolved and changed over time.
Which country do fossils come from?
Fossils can be found in many countries around the world. Some well-known fossil-rich countries include the United States, China, Mongolia, Argentina, and Australia. Each of these countries has unique geological formations that have preserved fossils from various time periods.
How is a tyrant different from ancient Greece then today?
Well, that would be hard to compare, because two different lifestyles from two different time periods are not remotely the same.
The sum of all the fossils that exist is called the?
The sum of all the fossils that exist is called that fossil record. It includes fossils from all geologic time periods.
Compare geologic time with geologic column?
Geologic time refers to the vast expanse of time over which Earth's history is recorded, characterized by different eons, eras, periods, and epochs. The geologic column, on the other hand, is a hypothetical representation of the Earth's rock layers and the fossils they contain, arranged in chronological order based on relative dating principles. Geologic time provides the framework for understanding the sequence of events in Earth's history, while the geologic column is a visual representation of this history based on the rock layers and fossils found in stratigraphic succession.
Are index fossils the remains of species that existed on earth for relatively short periods of time?
Yes, index fossils are the remains of species that lived for short periods of time geologically. They are useful for dating and correlating the age of rock layers.
