FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2512911624> ?p ?o ?g. }

• W2512911624 abstract "Only a tiny fraction of the carbon fixed by primary producers in the surface ocean is preserved in sediments, but this organic matter (OM) burial is one of the main processes linking the short and long-term carbon cycles, giving it important roles in global biogeochemistry. OM-rich deposits often contain abundant organic S (OS), and sulfur incorporation is thought to make OM less available for heterotrophs and more likely to be preserved. Still, we have few constraints on the significance of sulfurization for OM burial in the modern ocean, and fewer on how that flux might have differed in the past. This thesis applies a new generation of analytical tools for S-isotope analysis to investigate the timescales and mechanisms of OM sulfurization in the modern ocean. By measuring the δ34S values of minor S phases and individual S-bearing organic compounds as well as major sedimentary phases, we are able to make progress on long-standing questions about the distribution of S isotopes among organic and inorganic S phases in sediments. Chapters 2 and 3 focus on Cariaco Basin, where a large proportion of the OS in sediments appears to derive from OM sulfurization in particles sinking through the water column. Rapid sulfurization likely involves polysulfides and is associated with high primary productivity and OM export. In the sediments, low-molecular-weight organosulfur compounds accumulate over longer timescales and have low and distinctive δ34S values. Chapter 4 presents records from Santa Barbara Basin, where OS appears to be exchanging with less abundant porewater sulfide and controlling its δ34S value. As in many environments, pyrite in these sediments is more 34S-depleted than either OS or sulfide. We attribute this pattern to pyrite formation within sulfide-generating microenvironments prior to equilibration between OS and sulfide in porewater. Chapter 5 tests the feasibility of the proposed OS–sulfide exchange and confirms that sulfide δ34S can reflect equilibrium with natural OM. We also find evidence that sulfurization of thiols may involve an interim polysulfide that includes the thiol S atom, providing a mechanism to mix biogenic S into proto-kerogen and potentially helping explain differences between the global pyrite and OS S-isotope records." @default.
• W2512911624 created "2016-09-16" @default.
• W2512911624 creator A5033457995 @default.
• W2512911624 date "2016-01-01" @default.
• W2512911624 modified "2023-09-27" @default.
• W2512911624 title "Organic Matter Sulfurization in the Modern Ocean" @default.
• W2512911624 doi "https://doi.org/10.7907/z91z42b0." @default.
• W2512911624 hasPublicationYear "2016" @default.
• W2512911624 type Work @default.
• W2512911624 sameAs 2512911624 @default.
• W2512911624 citedByCount "0" @default.
• W2512911624 crossrefType "dissertation" @default.
• W2512911624 hasAuthorship W2512911624A5033457995 @default.
• W2512911624 hasConcept C104779481 @default.
• W2512911624 hasConcept C107872376 @default.
• W2512911624 hasConcept C109007969 @default.
• W2512911624 hasConcept C110872660 @default.
• W2512911624 hasConcept C111368507 @default.
• W2512911624 hasConcept C122846477 @default.
• W2512911624 hasConcept C126559015 @default.
• W2512911624 hasConcept C127313418 @default.
• W2512911624 hasConcept C127636831 @default.
• W2512911624 hasConcept C130309983 @default.
• W2512911624 hasConcept C139719470 @default.
• W2512911624 hasConcept C140205800 @default.
• W2512911624 hasConcept C151730666 @default.
• W2512911624 hasConcept C158787203 @default.
• W2512911624 hasConcept C159985019 @default.
• W2512911624 hasConcept C162324750 @default.
• W2512911624 hasConcept C17409809 @default.
• W2512911624 hasConcept C178790620 @default.
• W2512911624 hasConcept C185592680 @default.
• W2512911624 hasConcept C18903297 @default.
• W2512911624 hasConcept C192562407 @default.
• W2512911624 hasConcept C1965285 @default.
• W2512911624 hasConcept C20364790 @default.
• W2512911624 hasConcept C204983608 @default.
• W2512911624 hasConcept C2776152364 @default.
• W2512911624 hasConcept C2779870107 @default.
• W2512911624 hasConcept C2780173749 @default.
• W2512911624 hasConcept C2780416900 @default.
• W2512911624 hasConcept C2780596425 @default.
• W2512911624 hasConcept C2816523 @default.
• W2512911624 hasConcept C48743137 @default.
• W2512911624 hasConcept C518881349 @default.
• W2512911624 hasConcept C6494504 @default.
• W2512911624 hasConcept C6939412 @default.
• W2512911624 hasConcept C86803240 @default.
• W2512911624 hasConcept C94336100 @default.
• W2512911624 hasConceptScore W2512911624C104779481 @default.
• W2512911624 hasConceptScore W2512911624C107872376 @default.
• W2512911624 hasConceptScore W2512911624C109007969 @default.
• W2512911624 hasConceptScore W2512911624C110872660 @default.
• W2512911624 hasConceptScore W2512911624C111368507 @default.
• W2512911624 hasConceptScore W2512911624C122846477 @default.
• W2512911624 hasConceptScore W2512911624C126559015 @default.
• W2512911624 hasConceptScore W2512911624C127313418 @default.
• W2512911624 hasConceptScore W2512911624C127636831 @default.
• W2512911624 hasConceptScore W2512911624C130309983 @default.
• W2512911624 hasConceptScore W2512911624C139719470 @default.
• W2512911624 hasConceptScore W2512911624C140205800 @default.
• W2512911624 hasConceptScore W2512911624C151730666 @default.
• W2512911624 hasConceptScore W2512911624C158787203 @default.
• W2512911624 hasConceptScore W2512911624C159985019 @default.
• W2512911624 hasConceptScore W2512911624C162324750 @default.
• W2512911624 hasConceptScore W2512911624C17409809 @default.
• W2512911624 hasConceptScore W2512911624C178790620 @default.
• W2512911624 hasConceptScore W2512911624C185592680 @default.
• W2512911624 hasConceptScore W2512911624C18903297 @default.
• W2512911624 hasConceptScore W2512911624C192562407 @default.
• W2512911624 hasConceptScore W2512911624C1965285 @default.
• W2512911624 hasConceptScore W2512911624C20364790 @default.
• W2512911624 hasConceptScore W2512911624C204983608 @default.
• W2512911624 hasConceptScore W2512911624C2776152364 @default.
• W2512911624 hasConceptScore W2512911624C2779870107 @default.
• W2512911624 hasConceptScore W2512911624C2780173749 @default.
• W2512911624 hasConceptScore W2512911624C2780416900 @default.
• W2512911624 hasConceptScore W2512911624C2780596425 @default.
• W2512911624 hasConceptScore W2512911624C2816523 @default.
• W2512911624 hasConceptScore W2512911624C48743137 @default.
• W2512911624 hasConceptScore W2512911624C518881349 @default.
• W2512911624 hasConceptScore W2512911624C6494504 @default.
• W2512911624 hasConceptScore W2512911624C6939412 @default.
• W2512911624 hasConceptScore W2512911624C86803240 @default.
• W2512911624 hasConceptScore W2512911624C94336100 @default.
• W2512911624 hasLocation W25129116241 @default.
• W2512911624 hasOpenAccess W2512911624 @default.
• W2512911624 hasPrimaryLocation W25129116241 @default.
• W2512911624 hasRelatedWork W1511757666 @default.
• W2512911624 hasRelatedWork W1994270148 @default.
• W2512911624 hasRelatedWork W1997756468 @default.
• W2512911624 hasRelatedWork W2005428926 @default.
• W2512911624 hasRelatedWork W2015299444 @default.
• W2512911624 hasRelatedWork W2020873526 @default.
• W2512911624 hasRelatedWork W2038281478 @default.
• W2512911624 hasRelatedWork W2047844438 @default.
• W2512911624 hasRelatedWork W2068056191 @default.
• W2512911624 hasRelatedWork W2073067258 @default.
• W2512911624 hasRelatedWork W2079556684 @default.
• W2512911624 hasRelatedWork W2123738577 @default.

• next