Abrasion of sedimentary rocks as a source of hydrogen peroxide and nutrients to subglacial ecosystems

Abstract H 2 O 2 N, Fe). Samples were crushed using a ball mill, water was added to rock powders within gastight vials, and samples were incubated in the dark at 4 ∘ C. Headspace and water samples were taken immediately after the addition of water and then again after 5 and 25 h. Samples generated up to 1.5 µ mol H 2 O 2 g - 1. The total sulfur content, a proxy for the sulfide content, did not correlate with H 2 O 2 H 2 O 2 Fe -driven Fenton reactions and the pH of the solution were also likely to be important in controlling both the initial rate of production and subsequent rates of destruction of H 2 O 2 nmol CH 4 g - 1, 680 nmol H 2 g - 1, volatile fatty acids (up to 1.7 µ mol acetate g - 1) and 8.2 µ mol NH 4 + g - 1 to subglacial ecosystems. These results highlight the potentially important role that abrasion plays in providing nutrient and energy sources to subglacial microbial ecosystems underlain by sedimentary rocks.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Abrasion of sedimentary rocks as a source of hydrogen peroxide and nutrients to subglacial ecosystems ; volume:20 ; number:5 ; year:2023 ; pages:929-943 ; extent:15 ; Biogeosciences ; 20, Heft 5 (2023), 929-943 (gesamt 15)

Contributors, Places and Time

• Creator: Gill-Olivas, Beatriz ; Telling, Jon ; Skidmore, Mark ; Tranter, Martyn

Further information

• DOI: 10.5194/bg-20-929-2023
• URN: urn:nbn:de:101:1-2023033006022360805015
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:56 AM CEST