A tectogenetic origin for the deep subsurface microorganisms of Taylorsville Basin: thermal and fluid flow model constraints

Tseng, Hsin Yi

doi:10.1016/s0168-6445(97)00021-1

Cited by 3 publications

(4 citation statements)

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“…This was also observed to be the case for a steady state heat transfer model for the present day Taylorsville basin [Tseng et al, 1995]. During the first 30 Ma of the basin evolution, when compaction-driven flow dominated, heat transfer was dominated by conduction because computed fluid velocities were too small to disturb the conductive thermal regime (Figure 6a).…”

Section: Computed Groundwater Darcy's Velocities Varied Signifi-supporting

confidence: 61%

“…This temperature is much higher than the maximum growth or survival temperatures for these microorganisms (75øC) [Zhang et al, 1996]. A two-dimensional, steady state fluid flow and heat transport model indicated that the present-day groundwater flow rate, <0.1 mm/yr, is too slow to transport bacteria from the surface [Tseng et al, 1995; T. C.…”

Section: Introductionmentioning

confidence: 94%

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Hydrogeologic Constraint on the origin of deep subsurface microorganisms within a Triassic Basin

Tseng¹,

Person²,

Onstott³

1998

Water Resources Research

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Abstract. The thermal history of the Taylorsville basin indicates that the thermophilic anaerobic bacteria extracted from Triassic strata at 2800 m below the land surface within the basin probably migrated to their current location. In order to ascertain the most probable scenario for microbial transport, a two-dimensional transient fluid flow and heat transport model of the Taylorsville basin was developed using the finite element method. The numerical model was constrained by tectonic and thermal histories of the basin, coupled with the permeability and porosity data extracted from core samples. The model demonstrates that a topographically driven groundwater flow system, caused by the tectonic uplift and erosion during the Jurassic, can explain the observed differential cooling of the basin. The computed groundwater flow rates during this period were on the order of 1 to 100 mm/yr. Combined with the cooling history of the microbially sampled strata, such rates provided a possible mechanism for the introduction of ancient surface or subsurface microorganisms to the deep subsurface. This tectogenetic mechanism may explain the origins of deep subsurface microorganisms for other regions of the Earth.

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Section: Computed Groundwater Darcy's Velocities Varied Signifi-supporting

confidence: 61%

Section: Introductionmentioning

confidence: 94%

Hydrogeologic Constraint on the origin of deep subsurface microorganisms within a Triassic Basin

Tseng¹,

Person²,

Onstott³

1998

Water Resources Research

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“…It can bring microbes to isolated or sterilized subsurface environments Martini et al, 1996Martini et al, , 1998Colwell et al, 1997;Tseng and Onstott, 1997;Walvoord et al, 1999). Groundwater also interacts with hydrocarbon phases and affects the quality and commercial value of a hydrocarbon system by processes such as gas dissolution, oil "water washing" as well as pore creation and destruction in more traditional reservoirs (Lafargue and Barker, 1988;Ballentine et al, 1991Ballentine et al, , 1996Summa, 1995;Williams et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Noble gas tracing of groundwater/coalbed methane interaction in the San Juan Basin, USA

Zhou

Ballentine

Kipfer

et al. 2005

Geochimica et Cosmochimica Acta

136

133

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“…The process of microbial methanogenesis from coal is complex, but it is thought to be enhanced with introduction of microbes and nutrients through meteoric water recharge (Strąpoć et al, 2011). Such recharge is a common feature at many of the world's largest reserves of microbial CBM (Flores et al, 2008;Martini et al, 1998Martini et al, , 1996McIntosh et al, 2008;Schlegel et al, 2011aSchlegel et al, , 2011bScott et al, 1994;Tseng, 1997;Walvoord et al, 1999;Zhou and Ballentine, 2006). Strąpoć et al (2011) provide a thorough review of the pathways of methanogenesis from coal.…”

Section: Introductionmentioning

confidence: 99%

Factors controlling the co-occurrence of microbial sulfate reduction and methanogenesis in coal bed reservoirs

Glossner

Gallagher

Landkamer

et al. 2016

International Journal of Coal Geology

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Sulfate-reducing microorganisms (SRM) and methanogenic archaea have been previously observed in coal bed methane reservoirs, suggesting that the model for separation of these organisms based on sulfate concentration may not apply to such reservoirs. Using a methanogenic consortium enriched from coal, microcosm experiments showed simultaneous activity of methanogens and sulfate reducers at sulfate concentrations ranging from 50 to 1000 µM when coal was the sole substrate. These experiments revealed no apparent correlation between methanogenic potential and sulfate concentration. In other microcosm experiments with varying acetate amendments, concentrations of the phospholipid fatty acids (PLFAs) 14:0, 16:1ω5, 16:1ω7cis, 16:1ω7trans, and cy17:0 correlated strongly with the initial acetate concentration in microcosms with 500 µM sulfate, while i17:0 correlated strongly in microcosms with 200 µM sulfate. A significant portion of the acetate in these experiments went to microbial metabolisms other than dissimilatory sulfate reduction or methanogenesis, suggesting that some of these PLFAs were likely produced by some other unknown acetate-consuming microorganisms. Copies of the dsrA gene increased at least 10-fold over initial levels in samples without molybdate (MoO4 2-) across all experiments, indicating that SRM were active when not inhibited by MoO4 2-. In experiments with < 300 µM acetate, copies of the mcrA gene increased over 49 days regardless of sulfate concentration. These results suggest that both SRM and methanogens are active at low acetate concentrations and may compete for available acetate with other acetate-consuming bacteria in coal bed methane reservoirs.

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A tectogenetic origin for the deep subsurface microorganisms of Taylorsville Basin: thermal and fluid flow model constraints

Cited by 3 publications

References 0 publications

Hydrogeologic Constraint on the origin of deep subsurface microorganisms within a Triassic Basin

Hydrogeologic Constraint on the origin of deep subsurface microorganisms within a Triassic Basin

Noble gas tracing of groundwater/coalbed methane interaction in the San Juan Basin, USA

Factors controlling the co-occurrence of microbial sulfate reduction and methanogenesis in coal bed reservoirs

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