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The Sulfur Budget for a Pelagic Sediment Section, ODP Leg 129: Effect of Sediments on Cycling of Sulfur in SubductionZones

The Sulfur Budget for a Pelagic Sediment Section, ODP Leg 129: Effect of Sediments on Cycling of Sulfur in SubductionZones
远洋沉积物部分的硫预算，ODP 第 129 段：沉积物对俯冲带中硫循环的影响
批准号：
9018136
负责人：
Jeffrey Alt
金额：
$11.54万
依托单位：
Regents of the University of Michigan - Ann Arbor
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1990
资助国家：
美国
项目状态：
已结题
起止时间：
1990-11-01 至 1992-12-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9018136&HistoricalAwards=false
关键词：
SulfurBudgetPelagicSedimentSection

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中文摘要
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英文摘要
The 34S-enrichment of arc volcanics relative to Mid-Ocean Basalt and the heterogeneity of mantle values of delta-S34 have been ascribed to contributions from subducted ocenaic crust. Recent work by the Dr. Alt has shown, however, that altered oceanic crust by itself cannot account for these observations. He plans to look for these sources of sulfur and its isotopes in the sediments that are carried into the trench along with igneous basement rocks. He will examine the entire pelagic column and its pore waters at 3 sites from Leg 129 of the Ocean Drilling Program in the western Pacific, define the sulfur budget within the sediment column, and determine the effects of low-temperature metamorphism on sulfur in the uppermost crust.
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Serpentinization processes in the subsurface of a seafloor ultramafic-hosted hydrothermal system
Organic Carbon in Altered Submarine Basalts: Tracing the Subsurface Biosphere and Role in the Global Carbon Cycle
Collaborative Research: Stable isotope tracers of the subsurface biosphere and its geochemical effects in oceanic ridge flank basement
The Role of Serpentinites in Subduction Recycling of Sulfur and Organic Carbon
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