Subsurface biogeochemical cycling of nitrogen in the actively serpentinizing Samail Ophiolite, Oman

Autor: Kaitlin R. Rempfert, Daniel B. Nothaft, Emily A. Kraus, Ciara K. Asamoto, R. Dave Evans, John R. Spear, Juerg M. Matter, Sebastian H. Kopf, Alexis S. Templeton

Publikováno v: Frontiers in Microbiology, Vol 14 (2023)

Nitrogen (N) is an essential element for life. N compounds such as ammonium (NH4+) may act as electron donors, while nitrate (NO3-) and nitrite (NO2-) may serve as electron acceptors to support energy metabolism. However, little is known regarding th

Externí odkaz: https://doaj.org/article/64bfd3fd46474ed284fd01720035f527

Accessing the Subsurface Biosphere Within Rocks Undergoing Active Low‐Temperature Serpentinization in the Samail Ophiolite (Oman Drilling Project)

Autor: Mason Munro-Ehrlich, Clemens Glombitza, Alexis S. Templeton, Elizabeth M. Fones, Yuki Morono, Peter B. Kelemen, Dawn Cardace, Tori M. Hoehler, Spencer D. Zeigler, L. E. Mayhew, K. R. Rempfert, E. A. Kraus, Eric T. Ellison, Juerg M. Matter, Eric S. Boyd, Daniel B. Nothaft, John R. Spear

Publikováno v: Journal of Geophysical Research: Biogeosciences. 126

The Oman Drilling Project established an “Active Alteration” multi-borehole observatory in dunite and harzburgite undergoing low-temperature serpentinization in the Samail ophiolite. The highly ser...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aab317aba212290bd61450b7b12bbfc6
https://doi.org/10.1029/2021jg006315

Physiological adaptations to serpentinization in the Samail Ophiolite, Oman

Autor: Saroj Poudel, E. A. Kraus, Daniel R. Colman, Alexis S. Templeton, Elizabeth M. Fones, John R. Spear, Daniel B. Nothaft, K. R. Rempfert, Eric S. Boyd

Publikováno v: The ISME Journal

Hydration of ultramafic rock during the geologic process of serpentinization can generate reduced substrates that microorganisms may use to fuel their carbon and energy metabolisms. However, serpentinizing environments also place multiple constraints

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6607ba68640648cc4581c13783a19349
https://doi.org/10.1038/s41396-019-0391-2

Geochemical, biological and clumped isotopologue evidence for substantial microbial methane production under carbon limitation in serpentinites of the Samail Ophiolite, Oman

Autor: Shuhei Ono, Sebastian H. Kopf, Alexis S. Templeton, Mark E. Conrad, Edward D. Young, Daniel B. Nothaft, Peter B. Kelemen, Hannah M. Miller, Eric S. Boyd, Jeemin H. Rhim, Jabrane Labidi, Juerg M. Matter, David T. Wang

Publikováno v: Journal of Geophysical Research: Biogeosciences
Journal of Geophysical Research: Biogeosciences, American Geophysical Union, inPress, ⟨10.1029/2020JG006025⟩
Journal of Geophysical Research: Biogeosciences, American Geophysical Union, In press, ⟨10.1029/2020JG006025⟩

International audience; In hyperalkaline (pH > 10) fluids that have participated in low-temperature (< 150°C) serpentinization reactions, the dominant form of C is often methane (CH4), but the origin of this CH4 is uncertain. To assess CH4 origin in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac24644dbe4c7010cbfa1b90b4a0643f
https://hal.archives-ouvertes.fr/hal-03325162/file/888037_1_merged_1621345203.pdf

Dissolved inorganic carbon concentration and 13C/12C v1

Autor: Daniel B. Nothaft

CO2 conversion by H3PO4, extracted CO2 introduced into continous flow IRMS for 13C/12C analysis This method follows the general principles described in Assayag et al. (2006), which emphasizes the importance of maintaining the same water : H3PO4 volum

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c84428394dfe6a479edf9ccbc5b169dd
https://doi.org/10.17504/protocols.io.zbkf2kw