Atmospheric CO2 levels for the past 550 million years Phanerozic Era
Source; CO2 after R.A. Berner (Geo carb III)
|
Era |
Millions of year before the present MYBP |
CO2 Concentration in Parts per million |
Geologic Period |
|
|
0 |
390 |
|
|
|
25 MYBP |
330 |
|
|
|
50 |
300 |
|
|
|
75 |
800 |
|
|
|
100 |
1000 |
|
|
|
125 |
2500 |
|
|
|
150 |
2500 |
|
|
|
175 |
2000 |
|
|
|
200 |
1600 |
|
|
|
225 |
1800 |
|
|
|
250 |
1500 |
|
|
|
275 |
2500 |
|
|
|
300 |
200 |
|
|
|
325 |
200 |
|
|
|
350 |
200 |
|
|
|
375 |
3800 |
|
|
|
400 |
3000 |
|
|
|
425 |
4800 |
|
|
|
450 |
4300 |
|
|
|
475 |
4800 |
|
|
|
500 |
6000 |
|
|
|
525 |
7000 |
|
|
|
550 |
5000 |
|
|
|
|
|
|
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