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- W2022965257 abstract "We examined the cycling of C, S, Fe and the trace elements (TE) Ag, Cd, Mo, Mn, Re and Se in Chilean upwelling sediments from water depths of 127–2744 m at 36°S. The sediments are clay-rich with moderate total organic carbon (TOC) and low biogenic CaCO3 contents. For the shallow site (within oxygen minimum zone; OMZ), which shows some Thioploca biomass, highest observed TOC contents correspond to highest productivity-induced TOC-flux and/or enhanced preservation under O2-deficient conditions. Pyrite formation may be restricted by the concurrent presence of elemental S in Thioploca and/or the availability of reactive iron. In the other sediments (> 370 m water depth) pyrite formation is strongly restricted due to the low availability of metabolizable TOC for sulfate reduction. Calculations of the degree of bacterially mediated remineralization suggest that more nitrogen than TOC was remineralized by sulfate reduction than expected from Redfield C/N relationship. Manganese is significantly depleted due to reductive dissolution of Mn-(hydr)oxides within all sediments. Mo is only significantly enriched vs. the lithogenic background in the shallow core, implying anoxic conditions. Contents of Re and Mo as well as Re/Mo ratios indicate suboxic conditions for the other cores. Cd and Re contents decrease with increasing water depth reflecting decreasing reducing conditions. In contrast, authigenic Ag contents increase with water depth suggesting enrichment controlled by seawater availability and/or opaline input (and not redox conditions). Elevated Se contents in all cores may be either due to bio-detrital input or diffusion from seawater. Accumulation rates of TOC, TS, and TE off Chile are in the same order as those from the Gulf of California and lower than those off Peru. Distinct seasonality in upwelling and dilution of Chilean sediments with terrigenous material lead to rather low metabolizable TOC contents and lower TE trapping capacity." @default.
- W2022965257 created "2016-06-24" @default.
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- W2022965257 date "2005-10-01" @default.
- W2022965257 modified "2023-10-16" @default.
- W2022965257 title "Geochemical characteristics of Chilean upwelling sediments at ∼36°S" @default.
- W2022965257 cites W1499137617 @default.
- W2022965257 cites W1668362492 @default.
- W2022965257 cites W1963872830 @default.
- W2022965257 cites W1965065417 @default.
- W2022965257 cites W1968519088 @default.
- W2022965257 cites W1969494113 @default.
- W2022965257 cites W1972837298 @default.
- W2022965257 cites W1974287206 @default.
- W2022965257 cites W1974602078 @default.
- W2022965257 cites W1975383369 @default.
- W2022965257 cites W1977696404 @default.
- W2022965257 cites W1979340125 @default.
- W2022965257 cites W1983951426 @default.
- W2022965257 cites W1984797640 @default.
- W2022965257 cites W1988145244 @default.
- W2022965257 cites W1991904609 @default.
- W2022965257 cites W1992989511 @default.
- W2022965257 cites W1994175070 @default.
- W2022965257 cites W1994202325 @default.
- W2022965257 cites W1994470184 @default.
- W2022965257 cites W1995737122 @default.
- W2022965257 cites W1997153540 @default.
- W2022965257 cites W2002791212 @default.
- W2022965257 cites W2004373591 @default.
- W2022965257 cites W2005428926 @default.
- W2022965257 cites W2006658499 @default.
- W2022965257 cites W2007634424 @default.
- W2022965257 cites W2012922909 @default.
- W2022965257 cites W2013562394 @default.
- W2022965257 cites W2019951633 @default.
- W2022965257 cites W2022952430 @default.
- W2022965257 cites W2028248250 @default.
- W2022965257 cites W2033653245 @default.
- W2022965257 cites W2035398133 @default.
- W2022965257 cites W2038152892 @default.
- W2022965257 cites W2040701129 @default.
- W2022965257 cites W2042505381 @default.
- W2022965257 cites W2045066120 @default.
- W2022965257 cites W2046193486 @default.
- W2022965257 cites W2046621669 @default.
- W2022965257 cites W2047509769 @default.
- W2022965257 cites W2047870078 @default.
- W2022965257 cites W2049343152 @default.
- W2022965257 cites W2052534726 @default.
- W2022965257 cites W2053556761 @default.
- W2022965257 cites W2055862951 @default.
- W2022965257 cites W2056097751 @default.
- W2022965257 cites W2059589790 @default.
- W2022965257 cites W2061430449 @default.
- W2022965257 cites W2070685204 @default.
- W2022965257 cites W2073221817 @default.
- W2022965257 cites W2075025118 @default.
- W2022965257 cites W2075175782 @default.
- W2022965257 cites W2077974641 @default.
- W2022965257 cites W2082250875 @default.
- W2022965257 cites W2084961153 @default.
- W2022965257 cites W2085166727 @default.
- W2022965257 cites W2088925435 @default.
- W2022965257 cites W2091485757 @default.
- W2022965257 cites W2124640583 @default.
- W2022965257 cites W2126632720 @default.
- W2022965257 cites W2131424922 @default.
- W2022965257 cites W2132408571 @default.
- W2022965257 cites W2135546271 @default.
- W2022965257 cites W2142462683 @default.
- W2022965257 cites W2153116892 @default.
- W2022965257 cites W2153752261 @default.
- W2022965257 cites W2166867605 @default.
- W2022965257 cites W2331272198 @default.
- W2022965257 cites W4214942534 @default.
- W2022965257 doi "https://doi.org/10.1016/j.margeo.2005.07.005" @default.
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