Unknown
Lever, Mark A
;
Rouxel, Olivier J
;
Alt, Jeffrey C
;
[et al.]
Shimizu, Nobumichi
;
Ono, Shuhei
;
Coggon, Rosalind M
;
Shanks, Wayne C
;
Lapham, Laura
;
Elvert, Marcus
;
Prieto-Mollar, Xavier
;
Hinrichs, Kai-Uwe
;
Inagaki, Fumio
;
Teske, Andreas P
PANGAEA
In:
Supplement to: Lever, Mark A; Rouxel, Olivier J; Alt, Jeffrey C; Shimizu, Nobumichi; Ono, Shuhei; Coggon, Rosalind M; Shanks, Wayne C; Lapham, Laura; Elvert, Marcus; Prieto-Mollar, Xavier; Hinrichs, Kai-Uwe; Inagaki, Fumio; Teske, Andreas P (2013): Evidence for Microbial Carbon and Sulfur Cycling in Deeply Buried Ridge Flank Basalt. Science, 339(6125), 1305-1308, https://doi.org/10.1126/science.1229240
Publication Date:
2024-02-12
Description:
Sediment-covered basalt on the flanks of mid-ocean ridges constitutes most of Earth's oceanic crust, but the composition and metabolic function of its microbial ecosystem are largely unknown. By drilling into 3.5-million-year-old subseafloor basalt, we demonstrated the presence of methane- and sulfur-cycling microbes on the eastern flank of the Juan de Fuca Ridge. Depth horizons with functional genes indicative of methane-cycling and sulfate-reducing microorganisms are enriched in solid-phase sulfur and total organic carbon, host d13C- and d34S-isotopic values with a biological imprint, and show clear signs of microbial activity when incubated in the laboratory. Downcore changes in carbon and sulfur cycling show discrete geochemical intervals with chemoautotrophic d13C signatures locally attenuated by heterotrophic metabolism.
Keywords:
301-U1301B; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Exp301; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Juan de Fuca Hydrogeology; Mass spectrometer Finnigan Delta Plus XP; Replicate; Sample code/label; Treatment; δ13C, methane
Type:
Dataset
Format:
text/tab-separated-values, 28 data points
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