In:
Science, American Association for the Advancement of Science (AAAS), Vol. 298, No. 5602 ( 2002-12-20), p. 2372-2374
Abstract:
The size of the marine sulfate reservoir has grown through Earth's history, reflecting the accumulation of oxygen into the atmosphere. Sulfur isotope fractionation experiments on marine and freshwater sulfate reducers, together with the isotope record, imply that oceanic Archean sulfate concentrations were 〈 200 μM, which is less than one-hundredth of present marine sulfate levels and one-fifth of what was previously thought. Such low sulfate concentrations were maintained by volcanic outgassing of SO 2 gas, and severely suppressed sulfate reduction rates allowed for a carbon cycle dominated by methanogenesis.
Type of Medium:
Online Resource
ISSN:
0036-8075
,
1095-9203
DOI:
10.1126/science.1078265
Language:
English
Publisher:
American Association for the Advancement of Science (AAAS)
Publication Date:
2002
detail.hit.zdb_id:
128410-1
detail.hit.zdb_id:
2066996-3
detail.hit.zdb_id:
2060783-0
SSG:
11
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