Shouldn't Carbon-14 concentration be the same everywhere?

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Discussion Overview

The discussion revolves around the concentration of carbon-14 in organic matter and its implications for radiocarbon dating. Participants explore the processes that affect carbon-14 levels, including the carbon cycle and cosmic ray interactions, while also touching on related dating methods like uranium-lead dating.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions why newer organic matter has more carbon-14 than older organic matter, suggesting that carbon is constantly recycled through the carbon cycle.
  • The same participant speculates that C14-depleted carbon from old matter could enter the atmosphere and be incorporated into new organic matter, potentially starting off with lower C14 levels.
  • Another participant confirms that carbon-14 is replenished in the atmosphere due to cosmic rays hitting it, implying that without this process, carbon-14 would not exist today.
  • One participant expresses frustration, suggesting that the question could be easily answered through a quick online search or by reading existing literature on carbon-14.
  • A later reply reiterates that similar questions about uranium-lead dating could also be addressed through basic research.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the implications of carbon-14 recycling and its effects on dating methods. There are differing views on the necessity of research versus the validity of the original question.

Contextual Notes

Some assumptions about the carbon cycle and cosmic ray interactions remain unaddressed, and the discussion does not resolve the complexities of how carbon-14 levels vary in different environments.

Nishantkumar19
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Why is it that newer organic matter has more carbon-14 than older organic matter?

Isn't carbon constantly recycled, because of the carbon cycle? So C14-depleted carbon from old matter would enter the atmosphere, then be breathed in by new organic matter. The new matter would start off with lower levels of C14 than normal...right?

Or is Carbon 14 replenished in the atmosphere? If so, how?

P.S. I have the same question for other types of radiocarbon dating, eg. Uranium-Lead dating
 
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Nishantkumar19 said:
Or is Carbon 14 replenished in the atmosphere? If so, how?
Cosmic rays hitting the atmosphere.

If C14 was not continuously created there would be none of it left today.
 
Shame on you. It is one of these questions that can be answered with a minimum effort of a quick google search or reading an article on C-14 on wikipedia.
 
Borek said:
Shame on you. It is one of these questions that can be answered with a minimum effort of a quick google search or reading an article on C-14 on wikipedia.
It might be added that the same is true about uranium-lead dating.
 

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