Absolute Age Of Fossils

Absolute age of fossils

Review Read pages in the Online textbook.

Answer All of the following questions. Question 4 The book and PowerPoint review a variety of Relative and Absolute dating techniques applied to the fossil record. What is the difference between Relative and Absolute dating?

Explain the law of superposition and stratigraphic correlation, and discuss how they relate to relative dating? What is Fluorine dating and how can it be used to correlate animal remains? Question 5 Biostratigraphy is a primary dating technique used in paleontology. It relies heavily on the law of superposition, stratigraphic correlation, and the use of Index Fossils. What are Index Fossils?

Question 7 The three radiometric absolute dating techniques that we will need to know for this class include Carbon 14, Potassium-Argon, and Uranium Series. For this question you will need to explain each one. Include how the method works, the age range it can be applied too, the material that the date is obtained from, and what circumstances it is best used in. As trees grow, they develop concentric rings that correlate with periods of cessation and reactivation. In winter climates tree growth ceases but is then reactivated in absolute age of fossils warmer spring season.

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The thickness of the rings correlates with the length of seasons and is unique absolute age of fossils. These tree-rings will look the same in all trees of that species from that region, regardless of their age. Thus, trees that are 50 years old will develop the same rings in one year as a younger member of the same population say 5 years old. Some trees are remarkably long lived, and so carry a record from hundreds of years ago.

If a modern-day tree is cut down, a chronologists can count the ring pattern to establish how long the tree has been alive. Importantly, they can also compare the rings to wood beams found in archaeological site.]