C. If you assume that the global amount of radiocarbon (formed by cosmic-ray bombardment of atoms in the upper atmosphere and then dissolved in rain and seawater) is constant, then decaying carbon-14 is continuously replaced in organisms while they are alive. However, when an organism dies, the amount of its carbon-14 decreases as it decays to nitrogen-14. 1. The carbon in a buried peat bed has about 6% of the carbon-14 of modern shells. What is the age of the peat bed? Explain. 2. In sampling the peat bed, you must be careful to avoid any young plant roots or old limestone. Why?

Given, Percentage of carbon-14 buried in peat bed=6% To find the age of the peat bed, we use the…

Answered: C. If you assume that the global amount of radiocarbon (formed by cosmic-ray bombardment of atoms in the upper atmosphere and then dissolved in rain and…

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN: 9780134746241

Author: Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher: PEARSON

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Question

C. If you assume that the global amount of radiocarbon (formed by cosmic-ray bombardment of atoms in the upper
atmosphere and then dissolved in rain and seawater) is constant, then decaying carbon-14 is continuously replaced in
organisms while they are alive. However, when an organism dies, the amount of its carbon-14 decreases as it decays to
nitrogen-14.
1. The carbon in a buried peat bed has about 6% of the carbon-14 of modern shells. What is the age of the peat bed?
Explain.
2. In sampling the peat bed, you must be careful to avoid any young plant roots or old limestone. Why?

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