| Autor: |
Sissmann Olivier, Price Roy, Elvert Marcus, Heuer Verena B., Prieto Xavier, Monnin Christophe, Rouchon Virgile, Noirez Sonia, Beaumont Valérie, Ammouïal Jérémie, Kohler Eric, Menzies Catriona, Ryan Jeffrey, Takai Ken |
| Jazyk: |
English<br />French |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
E3S Web of Conferences, Vol 98, p 02011 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
2267-1242 |
| DOI: |
10.1051/e3sconf/20199802011 |
| Popis: |
Serpentinite-hosting mud volcanoes, located in the Marianna forearc subduction zone, were drilled during IODP Expedition 366. Recovered samples from Asùt Tesoru seamount provide new insights on the generation of organic matter in deep environments. Short-chain alcohols, volatile fatty acids and light hydrocarbons are produced within hyperalkaline pore fluids (pH 12.5) rich in H2. The stable isotope values of those species show heavy δ13C values, suggesting a formation process through Fischer-Tropsch-Type reactions. This close isotopic study brings new constraints on the reaction pathways leading to the formation of not only light hydrocarbons, but also of short-chain organic molecules. These compounds may serve as precursors of building blocks essential to life in deep oceanic settings. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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