DO NOW. Don’t forget on-line fossil activity due tomorrow. Answer these questions in the DO NOW of your binder: How old is rock if it contains 50% parent material and 50% daughter material and the half life is 10 years?
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ANALYSIS QUESTIONS1) What is the rock layer that has acritarchs and bacteria? Based on the available radiometric ages, can you determine the possible age of this rock? Why can't you say exactly what the age of the rock is? 2) Which rock contains trilobites? Based on the available radiometric ages, can you determine the possible age of this rock? Why can't you say exactly what the age of the rock is? 3) What is the age of the rock that contains the Triceratops fossils? Why can you be more precise about the age of this rock than you could about the ages of the rock that has the trilobites and the rock that contains acritarchs and bacteria?