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BIOGENIC IRON MINERALIZATION ACCOMPANYING THE DISSIMILATORY REDUCTION OF HYDROUS FERRIC OXIDE BY A GROUNDWATER BACTERIUM
Archaeal Diversity in Waters from Deep South African Gold Mines
- K. Takai, D. Moser, M. Deflaun, T. Onstott, J. Fredrickson
- BiologyApplied and Environmental Microbiology
- 1 December 2001
The results suggest that deep South African gold mines harbor novel archaeal communities distinct from those observed in other environments, and the evolutionary relationship and the phylogenetic organization of the domain Archaea are re evaluated.
Environmental Genomics Reveals a Single-Species Ecosystem Deep Within Earth
DNA from low-biodiversity fracture water collected at 2.8-kilometer depth in a South African gold mine was sequenced and assembled into a single, complete genome that indicates a motile, sporulating, sulfate-reducing, chemoautotrophic thermophile that can fix its own nitrogen and carbon by using machinery shared with archaea.
Long-Term Sustainability of a High-Energy, Low-Diversity Crustal Biome
Geochemical, microbiological, and molecular analyses of alkaline saline groundwater at 2.8 kilometers depth in Archaean metabasalt revealed a microbial biome dominated by a single phylotype…
Dissimilatory Reduction of Fe(III) and Other Electron Acceptors by a Thermus Isolate
A thermophilic bacterium that can use O2, NO3−, Fe(III), and S0 as terminal electron acceptors for growth was isolated from groundwater sampled at a 3.2-km depth in a South African gold mine and clustered most closely with members of the genusThermus, as determined by 16S rRNA gene (rDNA) sequence analysis.
Alkaliphilus transvaalensis gen. nov., sp. nov., an extremely alkaliphilic bacterium isolated from a deep South African gold mine.
On the basis of physiological and molecular properties, the isolate represents a novel species, for which the name Alkaliphilus transvaalensis gen. nov., sp.
Recoil refinements: Implications for the 40Ar/39Ar dating technique
Direct measurements of methane emissions from abandoned oil and gas wells in Pennsylvania
- Mary Kang, C. Kanno, T. Onstott
- Environmental ScienceProceedings of the National Academy of Sciences
- 8 December 2014
The first methane emission measurements from abandoned oil and gas wells in Pennsylvania were conducted and found substantial emissions, particularly from high-emitting abandoned wells, indicating that the emitted methane is predominantly of thermogenic origin.
Unravelling abiogenic and biogenic sources of methane in the Earth's deep subsurface