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Studying the layers of rock or strata can also be useful. If a layer of rock containing the fossil is higher up in the sequence that another layer, you know that layer must be younger in age. This can often be complicated by the fact that geological forces can cause faulting and tilting of rocks.

Absolute dating is used to determine a precise age of a rock or fossil through radiometric dating methods.

Since the rock formation contains both types of fossils the ago of the rock formation must be in the overlapping date range of 415 to 420 million years.

Carbon-14, the radioactive isotope of carbon used in carbon dating has a half-life of 5730 years, so it decays too fast.

It can only be used to date fossils younger than about 75,000 years.

Then after another 5,000 years half of the remaining parent isotope will have decayed.

While people are most familiar with carbon dating, carbon dating is rarely applicable to fossils.

With the passing of time, new strata form over them.

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Name _____ Date _____ Per ____ Virtual Lab Fossil Data. this case, scientists use relative dating to determine the order of events and the relative ages of rocks. 
02-Jan-2019 18:12
RELATIVE TIME SCALE. At the close of the 18th century, the haze of fantasy and mysticism that tended to obscure the true nature of the Earth was being swept away. 
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RELATIVE DATING IN ARCHEOLOGY. The question, How old is it. is basic to the science of archaeology. Dating methods, such as radiocarbon dating, dendro-chronology or tree-ring dating, and potassium-argon dating, that may furnish 
02-Jan-2019 18:19
So, how do we know how old a fossil is? There are two main types of fossil dating, relative dating and absolute dating. 
02-Jan-2019 18:22
Relative age allows scientists to know whether something is older or younger than something else, while absolute age means that scientists know the exact number in years that have passed since the. 
02-Jan-2019 18:26
Absolute dating is a method of. What Is Absolute Dating? A. Radiocarbon dating provides additional clues necessary for absolute dating. Relative dating is an. 
02-Jan-2019 18:28
Need some practice using the rules of relative dating to put rock layers in order from youngest to oldest? Here are a few interactive activities you can use! 
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