3. The figure below shows a compilation of carbon isotope compositions of sedimentary carbonates and organic matter through Earth history. (0%) 0 20 10- -10 X ● Carbonate X x Organic
3. The figure below shows a compilation of carbon isotope compositions of sedimentary carbonates and organic matter through Earth history. (0%) 0 20 10- -10 X ● Carbonate X x Organic
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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
Transcribed Image Text:3. The figure below shows a compilation of carbon isotope compositions of
sedimentary carbonates and organic matter through Earth history.
813 C (%)
20
10-
-10
-20
-30
-40
-50
0
500
1000
X
Carbonate
X x Organic
●
1500 2000 2500 3000 3500 4000
Time (Ma)
Based on this data, over which period(s) in Earth history would you say the global
carbon cycle was least likely to have been in steady state? Explain your reasoning.
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