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- W2119610316 abstract "Concentrations of oceanic and atmospheric oxygen have varied over geologic time as a function of sulfur and carbon cycling at or near the Earth’s surface. This balance is expressed in the sulfur isotope composition of seawater sulfate. Given the near absence of gypsum in pre-Phanerozoic sediments, trace amounts of carbonate-associated sulfate (CAS) within limestones or dolostones provide the best available constraints on the isotopic composition of sulfate in Precambrian seawater. Although absolute CAS concentrations, which range from those below detection to ∼120 ppm sulfate in this study, may be compromised by diagenesis, the sulfur isotope compositions can be buffered sufficiently to retain primary values. Stratigraphically controlled δ34S measurements for CAS from three mid-Proterozoic carbonate successions (∼1.2 Ga Mescal Limestone, Apache Group, Arizona, USA; ∼1.45–1.47 Ga Helena and Newland formations, Belt Supergroup, Montana, USA; and ∼1.65 Ga Paradise Creek Formation, McNamara Group, NW Queensland, Australia) show large isotopic variability (+9.1‰ to +18.9‰, −1.1‰ to +27.3‰, and +14.1‰ to +37.3‰, respectively) over stratigraphic intervals of ∼50 to 450 m. This rapid variability, ranging from scattered to highly systematic, and overall low CAS abundances can be linked to sulfate concentrations in the mid-Proterozoic ocean that were substantially lower than those of the Phanerozoic but higher than values inferred for the Archean. Results from the Belt Supergroup specifically corroborate previous arguments for seawater contributions to the basin. Limited sulfate availability that tracks the oxygenation history of the early atmosphere is also consistent with the possibility of extensive deep-ocean sulfate reduction, the scarcity of bedded gypsum, and the stratigraphic δ34S trends and 34S enrichments commonly observed for iron sulfides of mid-Proterozoic age." @default.
- W2119610316 created "2016-06-24" @default.
- W2119610316 creator A5031095238 @default.
- W2119610316 creator A5085509759 @default.
- W2119610316 date "2005-08-01" @default.
- W2119610316 modified "2023-09-30" @default.
- W2119610316 title "Trace sulfate in mid-Proterozoic carbonates and the sulfur isotope record of biospheric evolution" @default.
- W2119610316 cites W140666072 @default.
- W2119610316 cites W1538607061 @default.
- W2119610316 cites W1631820701 @default.
- W2119610316 cites W1682777677 @default.
- W2119610316 cites W1965475671 @default.
- W2119610316 cites W1965724422 @default.
- W2119610316 cites W1965744819 @default.
- W2119610316 cites W1965996126 @default.
- W2119610316 cites W1966089812 @default.
- W2119610316 cites W1967520551 @default.
- W2119610316 cites W1968654664 @default.
- W2119610316 cites W1969217101 @default.
- W2119610316 cites W1969327214 @default.
- W2119610316 cites W1975278947 @default.
- W2119610316 cites W1976968842 @default.
- W2119610316 cites W1986916739 @default.
- W2119610316 cites W1987336311 @default.
- W2119610316 cites W1987919200 @default.
- W2119610316 cites W1989662389 @default.
- W2119610316 cites W1991800138 @default.
- W2119610316 cites W1994360423 @default.
- W2119610316 cites W1996766054 @default.
- W2119610316 cites W1997066315 @default.
- W2119610316 cites W1998294701 @default.
- W2119610316 cites W2003800418 @default.
- W2119610316 cites W2004003726 @default.
- W2119610316 cites W2005428926 @default.
- W2119610316 cites W2006621928 @default.
- W2119610316 cites W2008519747 @default.
- W2119610316 cites W2009466418 @default.
- W2119610316 cites W2010407064 @default.
- W2119610316 cites W2013805224 @default.
- W2119610316 cites W2017583753 @default.
- W2119610316 cites W2019135021 @default.
- W2119610316 cites W2025192539 @default.
- W2119610316 cites W2026298204 @default.
- W2119610316 cites W202752379 @default.
- W2119610316 cites W2029023074 @default.
- W2119610316 cites W2031073903 @default.
- W2119610316 cites W2031357690 @default.
- W2119610316 cites W2036342458 @default.
- W2119610316 cites W2037123307 @default.
- W2119610316 cites W2039025613 @default.
- W2119610316 cites W2041040421 @default.
- W2119610316 cites W2042379760 @default.
- W2119610316 cites W2043024813 @default.
- W2119610316 cites W2044736580 @default.
- W2119610316 cites W2045047668 @default.
- W2119610316 cites W2046020514 @default.
- W2119610316 cites W2046453229 @default.
- W2119610316 cites W2047019335 @default.
- W2119610316 cites W2048980980 @default.
- W2119610316 cites W2049621326 @default.
- W2119610316 cites W2057100418 @default.
- W2119610316 cites W2058194027 @default.
- W2119610316 cites W2058684541 @default.
- W2119610316 cites W2060617303 @default.
- W2119610316 cites W2063722559 @default.
- W2119610316 cites W2065208888 @default.
- W2119610316 cites W2066793094 @default.
- W2119610316 cites W2071091649 @default.
- W2119610316 cites W2071402402 @default.
- W2119610316 cites W2074181171 @default.
- W2119610316 cites W2074881970 @default.
- W2119610316 cites W2077384023 @default.
- W2119610316 cites W2081383679 @default.
- W2119610316 cites W2085319754 @default.
- W2119610316 cites W2086551038 @default.
- W2119610316 cites W2087417856 @default.
- W2119610316 cites W2087769129 @default.
- W2119610316 cites W2089075563 @default.
- W2119610316 cites W2090027771 @default.
- W2119610316 cites W2097417202 @default.
- W2119610316 cites W2106099265 @default.
- W2119610316 cites W2106788916 @default.
- W2119610316 cites W2106975088 @default.
- W2119610316 cites W2107225219 @default.
- W2119610316 cites W2120708524 @default.
- W2119610316 cites W2128214815 @default.
- W2119610316 cites W2130490621 @default.
- W2119610316 cites W2131750083 @default.
- W2119610316 cites W2133038839 @default.
- W2119610316 cites W2136617541 @default.
- W2119610316 cites W2136996796 @default.
- W2119610316 cites W2143242500 @default.
- W2119610316 cites W2149161924 @default.
- W2119610316 cites W2153587034 @default.
- W2119610316 cites W2156107051 @default.
- W2119610316 cites W2161184773 @default.
- W2119610316 cites W2162531714 @default.
- W2119610316 cites W2165303310 @default.