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Tullis Onstott - Publications

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2015 Y. Chen * , Kevin K. Lehmann , Y. Peng, L.M. Pratt, J.R. White , S.B. Cadieux, B. Sherwood Lollar, G. Lacrampe-Couloume and T.C. Onstott, Hydrogen isotopic composition of Arctic and atmospheric CH4 determined by a portable near-IR cavity ring-down spectrometer with a cryogenic pre-concentrator. Astrobiology, in review.

2015 B. Stackhouse*, M.C.Y. Lau*, T. Vishnivetskaya, N. Burton*, R. Wang*, A. Southworth*, L. Whyte, and T.C. Onstott, Atmospheric CH4 oxidation by Arctic permafrost and mineral cryosols as a function of water saturation and temperature. Geobiology, in review.

2015 R. L. Sanders*, R. L. Sleighter, P. G. Hatcher, T. C. Onstott, L. G. Whyte, B. Stackhouse*, and S. C. B. Myneni, Strikingly Different Form of Organic Carbon in Soils of Polar Regions, Env. Sci. Tech., in review.

2015 Cara Magnabosco*, Kathleen Ryan*, Maggie C.Y. Lau*, Olukayode Kuloyo, Barbara Sherwood Lollar, Thomas L. Kieft, Esta van Heerden, and T.C. Onstott, A Metagenomic Window into Carbon Metabolism at 3 km Depth in Precambrian Continental Crust. The ISME Journal, doi:10.1038/ismej.2015.150.

2015 G. Borgonie, B. Linage-Alvarez, A.O. Ojo, S.O.C Mundle, L.B. Freese, C. Van Rooyen, O. Kuloyo, J. Albertyn, C. Pohl, E.D. Cason, J. Vermeulen, C. Pienaar, D. Litthauer, H. Van Niekerk, J. Van Eeden, B. Sherwood Lollar, T.C. Onstott and E. Van Heerden, Eukaryotic opportunists dominate the deep-subsurface biosphere in South Africa. Nature Communications 6:8952, doi: 10.1038/ncomms9952.

2015 Simkus, D. N., G. F. Slater, B. Sherwood Lollar, K. Wilkie, T. L. Kieft, C. Magnabosco, M.C.Y. Lau, M. J. Pullin, S. B. Hendrickson, K. E. Wommack, E. G. Sakowski, E. van Heerden, O. Kuloyo, B. Linage, G. Borgonie, T. C. Onstott, Variations in microbial carbon sources and cycling in the deep continental subsurface. Geochim. Cosmochim. Acta, 173:264–283.doi:10.1016/j.gca.2015.10.003.

2015 Brandon T. Stackhouse*, Tatiana A. Vishnivetskaya, Alice Layton, Susan Pfiffner, Nadia C. Mykytczuk, Lyle G. Whyte, Nabil Saad, and Tullis C. Onstott, Vertical gas fluxes, geochemical characteristics, and microbial community of polygonal active layer and permafrost during progressive spring thaw. Journal of Geophysical Research: Biogeosciences 120: doi:10.1002/2015JG003004.

2015 Borgonie G, Linage-Alvarez B, Ojo A, Shivambu S, Kuloyo O, Cason E, Maphanga S, Vermeulen J, Litthauer D, Ralston C, Onstott TC, Sherwood-Lollar B, van Heerden E, Deep subsurface mine stalactites trap endemic fissure fluid Archaea, Bacteria, and Nematoda possibly originating from ancient seas. Frontiers in Microbiology, 6:833.doi: 10.3389/fmicb.2015.00833.

2015 T.C. Onstott Deep Subsurface Microbiology. In Gargaud M, Irvine W (Eds.) Encyclopedia of Astrobiology, Vol. x, pp xx–xxx. Heidelberg New York Dordrecht London.

2015 M.C.Y. Lau*, B.T. Stackhouse*, A.C. Layton, A. Chauhan, T.A. Vishnivetskaya, K. Chourey, N.C.S. Mykytczuk, P.C. Bennett, G. Lamarche-Gagnon, N. Burton, J. Ronholm, W.H. Pollard, C.R. Omelon, D.M. Medvigy, R.L. Hettich, S.M. Pfiffner, L.G. Whyte and T.C. Onstott. An active atmospheric methane sink in high Arctic mineral cryosols. ISME Journal, doi:10.1038/ismej.2015.13.

2015 J. Labonté, E. Field, M. Lau, D Chivian, E. van_Heerden, K. E. Wommack, T. L. Kieft, T.C. Onstott and R. Stepanauskas. Single cell genomics indicates horizontal gene transfer and viral infections in a deep subsurface Firmicutes population. Frontiers in Microbiology 1-14: doi:10.1038/ismej.2015.48.

2014 Sherwood Lollar, B., TC Onstott, G. Lacrampe-Couloume, C. J. Ballentine.  The contribution of the Precambrian continental lithosphere to global H2 production.  Nature, 516, 379-382. doi: 10.1038/nature14017

2014 Vishnivetskaya, TA, AC Layton, AC, MCY Lau*, A Chauhan, KR Cheng, AJ Meyers, JR Murphy, AW Rogers, GS Saarunya, DE Williams, SM Pfiffner, JP Biggerstaff, BT Stackhouse*, TJ Phelps, LW, GS Sayler and TC Onstott. Commercial DNA extraction kits impact observed microbial community composition in permafrost samples., FEMS Microbiol Ecol. 87:217-230. doi: 10.1111/1574-6941.12219

2013 Y. Chen*, J. Kessler*, K. K. Lehmann, B. Sherwood Lollar, G. Lacrampe Couloume and T.C. Onstott, Measurement of the 13C/12C of atmospheric CH4 using near-IR Cavity Ringdown Spectroscopy, Analytical Chemistry 85:11250-11257. doi: 10.1021/ac401605s

2013 Onstott, T.C., Magnabosco, C.*, Aubrey, A.D., Burton, A.S., Dworkin, J.P., Elsila, J.E., Grunsfeld, S., Cao, B.H., Hein, J.E., Glavin, D.P., Kieft, T.L., Silver, B.J.*, vanHeerden, E., Opperman, D.J. and Bada, J.L. Does Aspartic Acid Racemization Constrain the Depth Limit of the Subsurface Biosphere? Geobiology, doi: 10.1111/gbi.12069

2012 Mailloux, B.J.*, Dochenetz, A., Bishop, M., Dong, H.*, Ziolkowski, L.A., Wommack, K.E., Sakowski, E.G., Onstott, T.C. and Slater, G.F. A carbon free filter for collection of large volume samples of cellular biomass from oligotrophic waters. Jour. Microbio. Methods 90:145-151, doi:10.1016/j.mimet.2012.04.016

2012 Murdoch, L., Germanovich, L., Wang, H., Onstott, T.C., Elsworth, D., Stetler, L., and Boutt, D. Hydrogeology of the Vicinity of DUSEL Homestake. Hydrogeology Journal 20:27-43. doi: 10.1007/s10040-011-0773-7

2012 Rummel, J.D., M.S. Race, G. Horneck, J. Arnould, A. Baker, L. Billings, P. Boston, C. Chyba, C. Cleland, S. Clifford, C. Conley, P. Ehrenfreund, E. Foote, J. Gabrynowicz, A. Kerrest, G. Kminek, C. McKay, T.C. Onstott, D. Paige, T. Peters, S. Priest, R. Randolph, P. Rettberg, B. Stackhouse, E. Wilson, J-C Worms, Ethical Considerations for Planetary Protection in Space Exploration: A Workshop Astrobiology 12:1017-1023. 

2012 Wanger, G.,D. Moser, M. Hay, S. Myneni, T.C.Onstott, G. Southam, Mobile hydrocarbon microspheres from >2-billion-year-old carbon-bearing seams in the South African deep subsurface, Geobiology, doi: 10.1111/j.1472-4669.2012.00340.x

2012 Silver, B.J., Raymond, R., Sigman, D., Prokopenko, M., Sherwood Lollar, B., Lacrampe-Couloume, G., Fogel, M., Pratt, L., Lefticariu, L., Onstott, T.C., The origin of NO3- and N2 in deep subsurface fracture water of South Africa. Chem. Geol. 294-295:51-62.  doi:10.1016/j.chemgeo.2011.11.017

2011 T.D. Scheibe, S.S. Hubbard, T.C. Onstott and M.F. DeFlaun, Lessons Learned from Bacterial Transport Research at the South Oyster Site, Review Paper, Ground Water, 49(5): 745-63 doi: 10.1111/j.1745-6584.2011.00831.x

2011 Lippmann-Pipke, J., Sherwood Lollar, B., Niedermann, S., Stronick, N., Naumann, R., vanHeerden, E. and Onstott, T.C. 2 Ga old crustal neon component implies long water-rock reaction times of deep fracture water . Chem. Geol.283:287-296 doi: 10.1016/j.chemgeo.2011.01.028

2011 Graham, D.E., Matthew D. Wallenstein, Tatiana A. Vishnivetskaya, Mark P. Waldrop, Tommy J. Phelps, Susan M. Pfiffner, T.C. Onstott, Lyle G. Whyte, Elizaveta M. Rivkina, David A. Gilichinsky, Dwayne A. Elias, Rachel Mackelprang, Nathan C. VerBerkmoes, Robert L. Hettich, Dirk Wagner, Stan D. Wullschleger, and Janet K. Jansson, Commentary Microbes in Thawing Permafrost: The Unknown Variable in the Climate Change Equation, The ISME Journal, 1-4, doi:10.1038/ismej.2011.163

2011 Borgonie G., A. García-Moyano, D. Litthauer, W. Bert, A. Bester, E. van Heerden, C. Möller, M. Erasmus & T. C. Onstott, Nematoda from the terrestrial deep subsurface of South Africa, Nature, 474, 79-82 doi:10.1038/nature09974

2011 Peters, C.A., Dobson, P.F., Oldenburg, C.M., Wang, J.S.Y., Onstott, T.C., Scherer, G.W., Freifeld, B.M., Ramakrishnan, T.S., Stabinski, E.L., Liang, K. and Verma, S. LUCI: A facility at DUSEL for large-scale experimental study of geologic carbon sequestration. Energy Procedia, 4: 5050–5057 doi:10.1016/j.egypro.2011.02.478.

2011 Johnson, A.P., Pratt, L.M., Vishnivetskaya, T., Pfiffner, S., Bryan, R.A., Dadachova, E., Whyte, L., Radtke, K., Chan, E., 1, Tronick, S.*, Borgonie, G., Mancinelli, R.M., Rothshchild, L.J., Rogoff, D.A., Horikawa, D.D., Onstott,T.C. Extended Survival of Several Organisms and Amino Acids under SimulatedMartian Surface Conditions. Icarus, 211:1162–1178  doi:10.1016/j.icarus.2010.11.011.

2011 Onstott, T.C., Chan, E., Polizzotto, M. and DeFlaun, M.F. Precipitation of Arsenic Under Sulfate Reducing Conditions and Subsequent Leaching Under Aerobic Conditions. App. Geochem. 26: 269–285, doi: 10.1016/j.apgeochem.2010.11.027.

2011 Davidson, Mark M.*, Silver, Bianca J.*, T.C. Onstott, D.P. Moser*, T. Lisa M. Pratt, E.A. Boice B. Sherwood Lollar , J. Lippmann-Pipke, S. M. Pfiffner, T.L. Kieft, W. Seymore and Ralston, C. Capture of Planktonic Microbial Diversity in Fractures by Long Term Monitoring of Flowing Boreholes, Evander Basin, South Africa. Geomicrobiology Journal, 28: 275-300  doi:10.1080/01490451.2010.499928.

2010 K. Zacny, D. McKay, L. Beegle, T.C. Onstott, R. Mueller, G. Mungas, P. Chu and J. Craft , Novel Method of Regolith Sample Return from Extraterrestrial Body using a Puff of Gas. Institute of Electrical and Electronics Engineers Aerospace Conference 2010, paper #1082, p. 1-10 .

2010 Randy L. Stotler, Shaun K. Frape, Barry M. Freifeld, Brian Holden, Tullis C. Onstott, Timo Ruskeeniemi, Eric Chan, A Method For Hydrogeological and Geochemical Measurement Beneath Deep Permafrost. Journal of Hydrology 48: doi: 10.1111/j.1745-6584.2010.00724.x .

2010 Silver, Bianca J.*, Tullis Onstott, Li-Hung Lin, George Rose, Colin Ralston, Barbara Sherwood-Lollar, Susan M. Pfiffner,Thomas L.Kieft and Sean McCuddy. In situ cultivation of subsurface microorganisms in a deep mafic sill: implications for SLiMEs. Geomicrobiology Journal 27:329-348.
doi: 10.1080/01490451003705183

2010 Onstott, T.C., Hinton, S.M., Silver, B.J.* and King, Jr., H.E. Coupling Hydrocarbon Degradation to Anaerobic Respiration and Mineral Diagenesis: Theoretical Constraints. Geobiology, 8:69-88. doi: 10.1111/j.1472-4669.2009.00224.x

2009 Davidson, Mark M.*, M.E. Bisher, Lisa M. Pratt, Jon Fong ,Gordon Southam,Susan M. Pfiffner, Z. Reches and T.C. Onstott, Sulfur Isotope Enrichment during Maintenance Metabolism of the Thermophilic Sulfate Reducing Desulfotomaculum putei . Applied and Environmental Microbiology 75: 5621–5630. doi: 10.1128/AEM.02948-08

2009 Onstott, T.C., Daniel J. McGown*,Corien Bakermans, Timo Ruskeeniemi, Lasse Ahonen, Jon Telling, Carl Boettiger, Ruby Ho, Bruno Soffientino, Susan M. Pfiffner, Sarah DiFurio, Barbara Sherwood Lollar, Shaun Frape, Randy Stotler, Lisa M. Pratt, and Tatiana A. Vishnivetskaya, Microbial Sulfur Cycling in Subpermafrost Saline Fracture Water at the Lupin Gold Mine, Nunavut, Canada. Microbial Ecology, 58:786-807. doi: 10.1007/s00248-009-9553-5

2009 Stotler, R.L., Shaun K. Frape, Timo Ruskeeniemi, Lasse Ahonen, Tullis C. Onstott and Monique Y. Hobbs, Hydrogeochemistry of groundwater’s in and below the base of thick permafrost at Lupin, Nunavut, Canada. Jour. of Hydrology 373:80-95. doi: 10.1007/s00248-009-9553-5

2009 West, L.*, D.J. McGown*, T.C. Onstott, R.V. Morris, P. Suchecki and L.M. Pratt, High Lake gossan deposit: An Arctic analogue for ancient Martian surficial processes? Planetary and Space Science 57:1302-1311.doi: 10.1016/j.pss.2009.05.011

2009 Paul Backes, Tullis Onstott, Yoseph Bar-Cohen, Mircea Badescu, Lisa Pratt, Daniel Helmick, Stewart Sherrit, Adam Johnson and Xiaoqi Bao. Planetary Sample Sealing for Caching. IEEEAC,  978-1-4244-2622-5.

2009 Smith, David J.*, Andrew C. Schuerger, Mark M. Davidson, Stephen W. Pacala, Corien Bakermans, and Tullis C. Onstott. Survivability of Psychrobacter cryohalolentis K5 Under Simulated Martian Surface Conditions. Astrobiology Journal 9: doi: 10.1089/ast.2007.0231.

2009 Zacny, K., Bar-Cohen, Y., Davis, K., Coste, P., Paulsen, G., Sherrit, S., George, J., Derkowski, B., Gorevan, S., Boucher, D., Guerroro, J., Kubota, T., Thomson, B.J., Stanley, S., Thomas, P., Lan, N., McKay, C., Onstott, T.C., Stoker, C., Glass, B., Wakabayashi, S., Whyte, L., Visentin, G., Re, E., Richter, L., Badescu, M., Bao, X., Fincher, R., Hoshino, T., Magnani, P. and Menon, C., Chap. 6. Extraterrestrial Drilling and Exploration in Drilling in Extreme Environments: Penetration and Sampling on Earth and Other Planets, Bar-Cohen and Zacny (eds.) Wiley&Sons. 

2008 Sherwood Lollar, B., Lacrampe-Couloume, G., Voglesonger, K., Onstott, T.C., Pratt, L.M. and Slater, G.F., Isotopic signatures of CH4 and higher hydrocarbon gases from Precambrian Shield sites: A model for abiogenic polymerization of hydrocarbons. Geochimica et Cosmochimica Acta 72:4778-4795.  doi10.1016/J.GCA.2008.07.004

2008 Wanger, G., Onstott, T. C. and Southam, G., Stars of the terrestrial deep subsurface: A novel ‘star-shaped’ bacterial morphotype from a South African platinum mine. Geobiology 6 (3): 325–330. doi:10.1111/j.1472-4669.2008.00163.x

2008 Dylan Chivian, Eric J. Alm, Eoin L. Brodie, David E. Culley, Paramvir S. Dehal, Todd Z. DeSantis, Thomas M. Gihring, Alla Lapidus, Li-Hung Lin, Stephen R. Lowry, Duane P. Moser, Paul Richardson, Gordon Southam, Greg Wanger, Lisa M. Pratt, Gary L. Andersen, Terry C. Hazen, Fred J. Brockman, Adam P. Arkin, and Tullis C. Onstott. Environmental genomics reveals a single species ecosystem deep within the Earth. Science 322:275-278.  doi:  10:1126/science.1155495 (pdf)

2008 Freifeld, B.M., Onstott, T.C., Pratt, L.M., Stotler, R., Pfiffner, S., Chan, E., Johnson, A., Holden, B., DiFurio, S., Ruskeeniemi, T., Frape, S., Neill, I. Arctic Ground Surface Temperature History using a Borehole Distributed Temperature Sensor at High Lake, Nunavut, Canada. Geophys. Res. Letters, 35: L14309. doi:10.1029/2008GL034762

2008 Pfiffner, S. M., T.C. Onstott, T. Ruskeeniemi, T., M. Talikka, C. Bakermans, D. McGown, E. Chan, A. Johnson, T. J. Phelps, M. Le Puil, S. A. Difurio, L.M. Pratt, R. Stotler, S. Frape, J. Telling, B. Sherwood-Lollar, I. Neill, and B. Zerbin. Challenges for Coring Deep Permafrost on Earth and Mars. Astrobiology Journal 8:623-638.  doi10.1089/AST.2007.0159

2008 Mac Lean, L.C.W., Pray, T.J., Onstott, T.C. and Southam, G. High-resolution structural and chemical studies of framboidal pyrite formed within a bacterial biofilm. Geobiology 6: 471–480 . doi10.1111/J.1472-4669.2008.00174.x

2008 Wanger, G., Onstott, T.C. and Southam, G.  Stars of the terrestrial deep subsurface: A novel ‘star-shaped’ bacterial morphotype from a South African platinum mine Geobiology 6:325–330.  doi: 10.1111/j.1472-4669.2008.00163.x

2007 Sherwood Lollar, B., Voglesonger, K., Lin, L.-H., Abrajano, T.A., Onstott, T.C. and Pratt, L.M. Hydrogeologic controls on episodic H2 release from Precambrian fractured rocks - Energy for deep subsurface life on Earth and Mars. Astrobiology Journal 7:971-986.  doi: 10.1089/ast.2006.0096

2007 Mac Lean, L.C.W., Pray, T.J., Onstott, T.C. and Southam, G. Mineralogical, Chemical and Biological Characterization of an Anaerobic Biofilm Collected from a Borehole in a Deep Gold Mine in South Africa. Geomicrobiology Journal 24:491–504.  doi:10.1080/0149045070157241

2007 M. Elwood Madden, S. Ulrich, T.C. Onstott, and T. Phelps, Salinity-induced hydrate dissociation: a mechanism for recent methane release on Mars. Geophys. Research Letters 34, L11202. doi:10.1029/2006GL029156

2007 Mailloux, Brian J., Devlin, S.,Fuller, M. E., Onstott, T. C., DeFlaun, M. F., Choi, K-H,Green-Blum, M., Swift, D. J. P., McCarthy, J., and Dong, H. The Limited Role of Aquifer Heterogeneity on Metal Reduction in an Atlantic Coastal Plain Determined by Push-Pull Tests.  Appl. Geochem. 22:974-995.  doi: 10.1016/j.apgeochem.2006.12.02

2007 DeFlaun, M. F., Fredrickson, J. K,., Dong, H., Pfiffner, S. M., Onstott, T. C., Balkwill, D .L., Streger, S. H., Stackebrandt, E., Knoessen, S. and van Heerden, E. Isolation and characterization of a Geobacillus thermoleovorans species from an ultra-deep South African gold mine. Systematic and Applied Microbiology 30:152-162. doi: 10.1016/j.syapm.2006.04.003

2006 Lin, L.H., Wang, P-L, Rumble, D., Lippmann-Pipke, J., Boice, E., Pratt, L. M., Sherwood Lollar, B., Brodie, Eoin, Hazen, T., Andersen, G., DeSantis, T., Moser, D. P., Kershaw, D. and Onstott, T. C. Long term biosustainability in a high energy, low diversity crustal biome.  Science 314:479-482.  doi: 10.1126/science.1127376

2006 Onstott, T. C., Lin, L.-H., Davidson, M., Mislowack, B., Borcsik, M., Hall, J., Slater, G., Ward, J., Sherwood Lollar, B., Lippmann-Pipke, J., Boice, E., Pratt, L. M., Pfiffner, S. M., Moser, D. P., Gihring, T. M., Kieft, T., Phelps, T. J., van Heerden, E., Litthaur, D., DeFlaun, M., Rothmel, R., Wanger, G. and Southam, G.  The origin and age of biogeochemical trends in deep fracture water of the Witwatersrand Basin, South Africa. Geomicrobiology Journal 23:369-414.  doi: 10.1080/01490450600875688

2006  Pfiffner, S. M., Cantu, J.M., Smithgall, A., Peacock, A., White, D.C., Moser, D. P., Onstott, T. C. and van Heerden, E.  Phospholipid Fatty Acid Profiles and Biodensity Estimates for Water, Rock and Air Samples Recovered from Witwatersrand Basin Mines.   Geomicrobiology Journal 23:431-442. doi: 10.1080/01490450600875712

2006 Slater, G. F., Lippmann-Pipke, J., Reddy, C. M., Lacrampe-Couloume, G., Onstott, T.C., Sherwood Lollar, B.  14C distribution in methane and DIC in South African gold mines: Implications to timing of methanogenesis. Geomicrobiology Journal 23:453-462. doi: 10.1080/01490450600875787

2006 Wanger, G., Onstott, T. C. and Southam, G.  Structural and Chemical Characterization of a Natural Fracture Surface from 2.8 Kilometers Below Land Surface: Biofilms in the Deep Subsurface.  Geomicrobiology Journal 23:443-452.  doi: 10.1080/01490450600875746

2006 Gihring, T. M., Moser, D. P., Lin, L.-H., Davidson, M., Onstott, T. C., Morgan, L., Milleson, M., Kieft, T., Trimarco, E., Balkwill, D.L. and Dollhopf, M. The distribution of microbial taxa in the subsurface water of the Kalahari Shield, South Africa. Geomicrobiology Journal23:415-430.  doi: 10.1080/01490450600875696

2006 Lin, L-H., Gihring, T. M., Sherwood Lollar, B., Boice, E., Pratt, L. M., Lippmann-Pipke, J., Bellamy, R.E.S., Hall, J. and Onstott, T. C. Planktonic microbial communities associated with fracture-derived groundwater in a deep gold mine of South Africa. Geomicrobiology Journal 23:474-497. doi: 10.1080/01490450600875829

2006 Trimarco, E., Balkwill, D.L., Davidson, M.M. and Onstott, T.C. In Situ Enrichment of a Diverse Community of Bacteria from a 4-5 km Deep Fault Zone in South Africa. Geomicrobiology Journal23:463-473. doi: 10.1080/01490450600875803

2006 Onstott, T. C., McGown, D., Kessler, J., Sherwood Lollar, B., Lehmann, K. K. and Clifford, S. Martian CH4: sources, flux and detection. Astrobiology 6:377-395.  

2006 Sherwood Lollar, B., Lacrampe-Couloume, G., Slater, G.F., Ward, J., Moser, D.P., Lin, L.H.  and Onstott, T.C.   Unravelling abiogenic and biogenic sources of methane in the Earth’s deep subsurface. Chem. Geol. 226:328-339.  doi: 1 0.1016/j.chemgeo.2005.09.02

2005 Lin, L-H, Hall, J.A., Lippmann, J., Ward, J.A., Sherwood-Lollar, B. and Onstott, T.C., Radiolytic H2 in the continental crust: Nuclear power for deep subsurface microbial communities, Geochem. Geophys. Geosys. 6.  doi: 10.1029/2004GC000907

2005 Kieft, T.L., McCuddy, S.M, Onstott, T. C., Davidson, M., Lin, L-H, Mislowack, B., Pratt, L.M., Boice, E., Sherwood Lollar, B., Lippmann-Pipke, J., Pfiffner, S. M., Phelps, T. J., Gihring, T., Moser, D., and van Heerden A. Geochemically Generated, Energy-Rich Substrates and Indigenous Microorganisms in Deep, Ancient Groundwater, Geomicrobiology Journal, 22:325-355. doi: 10.1080/01490450500184876

2005 Moser, D. P., T. M. Gihring, F. J. Brockman, J. K. Fredrickson, D. L. Balkwill, M. E. Dollhopf, B. Sherwood Lollar, L. M. Pratt, E. Boice, G. Southam, G. Wanger, B. J., Baker, S. M. Pfiffner, L.-H. Lin, and T. C. Onstott.  Desulfotomaculum spp. and Methanobacterium spp. Dominate 4-5 km Deep Fault. Appl. Environ. Microbiol. 71: 8773-8783doi: 10.1128/AEM.71.12.8773-8783.2005 

2004 Balkwill, D.L., Kieft, T.L., Tsukuda, T., Kostandarithes, H.M., Onstott, T.C., Macnaughton, S., Bownas, J. and Fredrickson, J.K. Identifiation of iron-reducing Thermus strains as Thermus scotoductus. Extremophiles 8:37-44. doi: 10.1007/s00792-003-0357-0

2004 Onstott, T.C. Impact of CO2 Injections on Deep Subsurface Microbial Ecosystems and Potential Ramifications for the Surface Biosphere. In The CO2 Capture and Storage Project, Vol. II, D.C. Thomas and S.M. Benson, eds., 1207-1239.

2004 Hall, J.A., Mailloux, B.J., Onstott, T.C., Scheibe, T.D., Fuller, M.E., Dong, H. and DeFlaun,M.F. Physical versus chemical effects on bacterial transport as determined during in situ sediment core pulse experiments.  Jour. Cont. Hydrology 76:295-314.  doi: 10.1016/j.jconhyd.2004.11.003

2004 Ward, J.A., Slater, G.F., Lacrampe-Couloume, G., Lin, L.-H., Hall, J.A., Moser, D.P., Bonin , A., Bellamy, R.E.S., Onstott, T.C. and Sherwood Lollar, B. Microbial Hydrocarbon Gases in the Witwatersrand Basin, South Africa: Implications for Deep Biosphere.  Geochim. Cosmochim. Acta, 68:239-3250.  doi: 10.1016/j.gca.2004.02.020

2004 Lin, L-H, Slater, G. F., Sherwood Lollar, B., Lacrampe-Couloume, G. and Onsott, T. C. Yields and hydrogen isotopic compositions of radiolytic H2 and the implications for deep biosphere in continental crust. Geochim. Cosmochim. Acta 69:893-903. 

2004 Fuller M. E., Mailloux B. J., Streger S., Hall J. A., Zhang P., Vainberg S., Johnson W. P., Onstott T. C., and DeFlaun M. F.  Application of a vital fluorescent staining method for simultaneous, near-real-time concentration monitoring of two bacterial strains in an Atlantic Coastal Plain aquifer in Oyster, Virginia.   Applied and Environmental Microbiology 70:1680-1687.  doi: 10.1128/AEM.70.3.1680-1687.2004

2003 Baker, B.J., Moser, D.P., MacGregor, B.J., Fishbain,S., Wagner, M., Fry, N.K., Jackson, B., Speolstra, N., Loos, S., Takai, K., Sherwood-Lollar, B., Fredrickson, J.K., Balkwill, D.L., Onstott, T.C., Wimpee, C.F. and Stahl,D.A.  Related assemblages of sulfate-reducing bacteria associated with ultradeep gold mines o South Africa and deep basalt aquifers of Washington State. Environmental Microbiology 5: 267-277.   doi: 10.1046/j.1462-2920.2003.00408.x

2003 Omar, G., Onstott, T.C. and Hoek, J. The Origin of Deep Subsurface Microbial Communities in the Witwatersrand Basin, South Africa as Deduced from Apatite Fission Track Analyses. Geofluids 3:69-80.  doi: 10.1046/j.1468-8123.2003.00050.x 

2003 Moser, D.P., Onstott, T. C., Fredrickson, J.K., Brockman, F. J., Balkwill, D. L., Drake, G.R., Pfiffner, S., White, D.C., Takai, K., Pratt, L.M., Fong, J., Sherwood-Lollar, B., Slater, G., Phelps, T.J., Spoelstra, N., DeFlaun, M., Southam, G., Welty, A.T., Baker, B. J., and Hoek, J. Temporal shifts in Microbial Community Structure and Geochemistry of an Ultradeep South African Gold Mine Borehole. Geomicrobiology Journal 20:1-32.  doi: 10.1080/01490450390249280

2003 Mailloux, B.J., Fuller, M.E., Rose, G.F., Onstott, T.C., DeFlaun, M.F., Alvarez, E., Hemingway, C., Hallet, R.B., Phelps, T.J., and Griffin, T. Design of a Modular Injector, Multi-level Sampler, and Sampling Manifold for Groundwater Tracer Experiments. Groundwater 41:816-827.  doi: 10.1111/j.1745-6584.2003.tb02422.x

2003 Musslewhite, C.L., McInerney, M.J., Dong, H., Onstott, T.C., Green-Blum, M.X., Swift, D., Macnaughton, S. The factors controlling microbial distribution and activity in the shallow subsurface. Geomicrobiology Journal 20:245-261.   doi: 10.1080/01490450390206719

2003 Lippmann, J., Stute, M., Torgersen, T., Moser, D.P., Hall,J., Lihung, L-H, Borcsik, M. Bellamy, R.E.S.and Onstott, T.C.  Dating ultra‑deep mine waters with noble gases and 36Cl, Witwatersrand Basin, South Africa. Geochim. Cosmochim. Acta. 67:4597-4619.  doi: 10.1016/S0016-7037(03)00414-9

2003 Mailloux, B.J., Fuller, M.E., Onstott, T.C., Hall, J., Dong, H., DeFlaun, M.F., Streger, S.H., Rothmel, R.K., Green, M., Swift, D.J.P. and Radke. J. The role of physical heterogeneity on the field-scale transport and attachment of bacteria. Water Resources Research, 39(6) 1142 doi: 10.1029/2002WR001591

2003 Mormile, M.R., Biesen, M.A., Gutierrez, M.C., Ventosa, A., Pavlovich, J.B., Onstott, T.C. and Fredrickson, J.K., Isolation of Halobacterium salinarum Retrieved Directly from Halite Brine Inclusions. Environmental Microbiology 5:1094-1102. doi: 10.1046/j.1462-2920.2003.00509.x

2003 Onstott, T.C., Moser, D.P., Fredrickson, J.K., Brockman, F.J., Pfiffner, S.M., Phelps, T.J., White, D.C., Peacock, A., Balkwill, D., Hoover, R., Krumholz, L.R., Borscik, M., Kieft, T.L. and Wilson, R.B. Indigenous versus contaminant microbes in ultradeep mines.  Env. Microbiol. 5:1168-1191. doi: 10.1046/j.1462-2920.2003.00512.x

2002 Dong H., Onstott, T.C., DeFlaun, M.F., Streger, S.H., Rothmel, R.K. and Mailloux, B.J. Relative Dominance of Physical vs. Chemical Effects on the Transport of Adhesion Deficient Bacteria in Intact Cores from South Oyster, Va. Environ. Science & Tech. 36:891-900. doi: 10.1021/es010144t

2002 Dong, H., Onstott, T.C., Ko., C.H., Elimelech, M., Hollingsworth, A.D., DeFlaun, M.F., Brown, D.G. and Mailloux, B.J. Theoretical Prediction of Collision Efficiency Between an Adhesion-Deficient Bacterium and Aquifer Sediments.  Colloids and Surfaces B: Biointerfaces 24:229-245.  doi: 10.1016/S0927-7765(01)00243-0

2002 Dong, H., Rothmel, R., Onstott, T.C., Fuller, M.E., DeFlaun, M.F., Streger, S.H., Dunlap, R., and Fletcher, M. Simultaneous Transport of Two Bacterial Strains in Intact Cores from Oyster, Virginia: Biological Effects and Numerical Modeling. Applied and Environmental Microbiology 68:2120-2132.  doi:10.1128/AEM.68.5.2120-2132.2002

2001 Johnson, W.P., Zhang, P., Fuller, M.E., Scheibe, T.D., Mailloux, B.J., Onstott, T.C. DeFlaun, M.F., Hubbard, S.S., Radtke, J., Kovacik, W.P. and Holben, W.E., Ferrographic tracking of bacterial transport in the field at the Narrow Channel Focus Area, Oyster, VA. Environ. Science and Tech. 35;182-191. doi: 10.1021/es001170e

2001 DeFlaun, M.F., Fuller, M.E., Zhang, P., Johnson, W.P., Mailloux, B.J., Onstott, T.C., Holben, W.E., Kovacik, W.P. and Balkwill, D.L., Comparison of Innovative Methods for Monitoring Bacterial Transport. Journal of Microbial Methods 47:219-231.doi: 10.1016/S0167-7012(01)00307-4

2001 Fuller, M.E., Mailloux, B.J., Zhang, P., Hall, J.A., Vainberg, S., Johnson, W.P., Onstott, T.C. and DeFlaun, M.F., Field-scale evaluation of CFDA/SE-staining coupled with multiple detection methods for assessing the transport of bacteria in situ.FEMS Microbial Ecology, 37:55-66. doi: 10.1016/S0168-6496(01)00143-x

2001 Takai, K., Moser, D.P., Onstott, T.C., Speolstra, N., Pfiffner, S.M., Dohnalkova, A. and Fredrickson, J.K.  Alcaliphilus auruminutor gen. nov., sp. nov., an extremely alkaliphilic bacterium isolated from a deep South African gold mine. Inter. Jour. Sys. Bacteriology 51:1245-1256. 

2001 Takai, K., Moser, D.P., DeFlaun, M.F., Onstott, T.C. and Fredrickson, J.K. Archaeal diversity in waters from deep South African Gold mines. Applied Environmental Microbiology 67:5750-5760.  doi: 10.1128/AEM.67.21.5750-5760.2001

2000 Dong, H., Fredrickson, J.K., Kennedy, D.W., Zachara, J.M., Kukkadapu, R.K. and Onstott T.C. Mineral transformations associated with the microbial reduction of magnetite.  Chem. Geology 169:299-316. doi: 10.1016/S0009-2541(00)00210-2

2000 Tobin, K.J., Fredrickson, J.K., Colwell, F.S., Smith, R.S. and Onstott, T.C. Recent calcite spar in an aquifer waste plume: A possible example of contamination driven calcite precipitation. Chem. Geology 169:449-460. 

2000 Fuller, M.E., Gillespie, K.M., Dong, H., Parsons, B.S., Onstott, T.C. and DeFlaun, M.F. Examining bacterial transport in intact cores from Oyster, Virginia: Effect of sedimentary facies type on bacterial breakthrough and retention.  Water Resources Research 36: 2417-2431. 

2000 Lin, L-H, Onstott, T.C. and Dong, H., Backscattered 39Ar loss in fine-grained minerals: Implications for 40Ar/39Ar geochronology of clay. Geochim. Cosmochim. Acta. 64:3965-3974. doi: 10.1016/S0016-7037(00)00439-7 

2000 Hemming, S.R., Gwiazda, R.H., Andrews, J.T., Broecker, W.S., Jennings, A.E. and Onstott, T.C. 40Ar/39Ar and Pb-Pb study of individual hornblende and feldspar grains from southeastern Baffin Island glacial sediments: Implications for the provenance of the Heinrich layers. Can. Jour. Earth Sci. 37: 879-890. 

2000 Fuller, M.E., Streger, S.H., Rothmel, R.K., Mailloux, B.J., Hall, J.A., Onstott, T.C., Fredrickson, J.K, Balkwill, D.L. and DeFlaun, M.F. Development of a vital fluorescent staining method for monitoring bacterial transport, Applied Environmental Microbiology 66: 4486-4496. 

1999 Kieft, T.L., Fredrickson, J.K., Onstott, T.C., Gorby, Y.A., Kostandarithes, H.M., Bailey, T.J., Kennedy, D.W., Li, S-M, Plymale, A.E., Spadoni, C.M. and Gray, M.S., Dissimilatory Reduction of Fe(III) and other electron acceptors by a Thermus Isolate. Applied and Environmental Microbiology 65:1214-1221. 

1999 Fredrickson, J.K., Zachara, J.M., Kennedy, D.W., Dong, H., Onstott, T.C., Hinman, N.W. and Shu-mei Li Biogenic Iron Mineralization accompanying the dissimilatory reduction of hydrous ferric oxide by a groundwater bacterium.  Geochim. Cosmochim. Acta 62:3239-3257. 

1999 Tobin, K., Onstott, T.C., DeFlaun, M.F., Colwell, F.S., and Fredrickson, J.K. In situ visualization of microorganisms in geological material.  Jour. of Microbial Methods 37: 201-213. 

1999 Dong, H., Onstott, T.C., DeFlaun, M.F., Fuller, M.E., Gillespie, K., and Fredrickson, J.K. Development of radiographic and microscopic techniques for the characterization of bacterial transport in intact sediment cores from Oyster.  Virginia. Jour. of Microbial Methods 37:139-154. 

1999 Lo, C-H, Lee, J.K.W. and Onstott, T.C. Argon release mechanisms of biotite in vacuo and the role of short-circuit diffusion and recoil. Chem. Geology 165:135-166. 

1998 Tseng, H-Y, and Onstott, T.C., A tectogenetic origin for the deep subsurface microorganisms of Taylorsville Basin: thermal and fluid flow model constraints. FEMS Microbiology Reviews 20:391-397. 

1998 Sletten, V.W. and Onstott, T.C., The thermal instability of muscovite during in vacuo heating: Implications for Ar loss systematics in the laboratory.  Geochim. Cosmochim. Acta, 62:123-141.                                                                                                                                                                   

1998 Onstott, T.C., Phelps, T.J., Kieft, T., Colwell, F.S., Balkwill, D.L., Fredrickson, J.K. and F.J. Brockman A global perspective on the microbial abundance and activity in the deep subsurface. in Enigmatic Microorganisms and Life in Extreme Environments (ed. J. Seckbach), Kluwer Publ., 489-499. 

1998 Tseng, H-Y, M. Person, and T.C. Onstott, Hydrogeologic constraints on the origin of deep subsurface microorganisms within a Triassic basin.  Water Resources Research 34: 937-948. 

1998 Tseng, H-Y, Onstott, T.C., Burruss, R.C., and G. Omar, Paleofluid circulation within a Triassic rift basin: evidence from thermal histories and oil inclusions. Geol. Soc. Amer. Bulletin. 111:275-290. 

1998 Onstott, T.C., Phelps, T.J., Colwell, F.S., Ringelberg, D., White, D.C., Boone, D.R., McKinley, J.P., Stevens, T.O., Balkwill, D.L., Griffin, T. and Kieft, T.  Observations pertaining to the origin and ecology of microorganisms recovered from the deep subsurface of Taylorsville Basin, Virginia. Geomicrobiology Journal 15:353-385. 

1997 Teixeira, W., Onstott, T.C. Makenya, M. and Szabo, G.A.J. Proterozoic Thermochronologic Implications from 40Ar/39Ar and K-Ar Dating of the Campo Belo Metamorphic Complex, Southern São Francisco Craton, Brazil.  An. Acad. bras. Ci. 69:59-75. 

1997 Fredrickson, J.K., McKinley, J.P., Bjornstad, B.N., Long, P.E., Ringelberg, D.B., White, D.C., Krumholz, L.R., Suflita, J.M., Colwell, F.S., Lehman, R.M., Phelps, T.J., and Onstott, T.C. Pore-size constraints on the activity and survival of subsurface bacteria in a Late Cretaceous shale-sandstone sequence, Northwestern New Mexico. Geomicrobiology Journal 14:183-202.

1997 Menard, T., Lesher, C.M., Stowell, H.H., Price, D.P., Pickell, J.R., Onstott, T.C. and Hulbert, L. Geology, Genesis, and Metamorphic History of the Namew Lake Ni-Cu Deposit, Manitoba, Economic Geology 91:1394-1413. 

1997 Onstott, T.C., Mueller, C.M., Pevear, D.R., and Vrolijk, P.J. Laser 40Ar/39Ar microprobe analyses of fine-grained illite,  Geochim. Cosmochim. Acta 61:3851-3861. 

1997 Colwell, F.S., Onstott, T.C., Dilwiche, M.E., Chandler, D., Fredrickson, J.K., Yao, Q-J, McKinley, J.P., Boone, D.R., Griffiths, R., Phelps, T.J., Ringelberg, D., White, D.C., LaFreniere, L., Balkwill, D.L., Lehman, R.M., Konisky, J. and Long, P.E. Microorganisms from deep, high temperature, sandstones: constraints on microbial colonization.  FEMS Microbiology Review 20:425-435.    

1996 Gwiazda, R.H., Hemming, S.R., Broecker, W.S., Onstott, T., and Mueller, C., Evidence from 40Ar/39Ar ages for a Churchill province source of ice-rafted amphiboles in Heinrich layer 2. Jour. Glaciology 42:1440-1446.

1995 Onstott, T.C., Miller, M., Ewing, R.C., G.W. Arnold, and D.S. Walsh Recoil Refinements: Implications for the 40Ar/39Ar dating technique. Geochim. Cosmochim. Acta. 59:1821-1834.  

1995 Lo, C.H., and Onstott, T.C. Rejuvenation of Argon Isotope Systematics in Minerals: A Case Study of the Taiwan Mountain Belt. Earth Planet. Sci. Lett. 131:71-98. 

1995 Harlan, S.S., Geissman, J.W., Henry, C.D., and Onstott, T.C., Paleomagnetism and 40Ar/39Ar Geochronology of Gabbro Sills at Mariscal Mountain Anticline, Southern Big Bend National Park, Texas; Implications for the Timing of Laramide Tectonism and Vertical Axis Rotations in the Southern Cordilleran Orogenic Belt. Tectonics 14: 307-321.

1995 Tseng, H-Y, Heaney, P.E., and Onstott, T.C., Characterization of Defects Induced by Neutron Irradiation using Powder X-ray Diffraction. Physics and Chemistry of Minerals 22:399-405. 

1995 Tseng, H-Y, Onstott, T.C., Burruss, R.C., and Miller, D.S., Constraints on the thermal history of Taylorsville Basin, Virginia, U.S.A., from fluid-inclusion and fission-track analyses: implications for subsurface geomicrobiology experiments. Chem. Geol. 127:269-294. 

1994 Cumbest, R.J., Johnson, E.L., and Onstott, T.C., Argon composition of metamorphic fluids: Implications for 40Ar/39Ar geochronology. Geol. Soc. Amer. Bull. 106:942-951. 

1994 Barnett, D., Bowman, J., Pavlis, T., Rubenstone, J., Onstott, T.C., and Snee L., Metamorphism and near trench plutonism during incipient subduction in southern Alaska. Jour. Geophys. Res. 99: 24007 - 24024. 

1994 Fiske, P.S., Hargraves, R.B., Onstott, T.C., Koeberl, C., and Hougen, S.B., Pseudotachylites of the Beaverhead Impact Structure: Geochemical, Geochronological, Petrographic and Field Investigations. Geol. Soc. Amer. Spec. Paper 293:163-176.  

1994 Ledru, P., Cocherie, A., Barbosa, J., Johan, V., and Onstott T.C., Ages du metamorphisme granulitique dans le craton du São Francisco (Brésil). Implications sur la nature de l'orogéne transamazonien. C.R. Acad. Sci. Paris, serie II 318:251-257. 

1994 Farley, K.A., Poreda, R.J., and Onstott, T.C. Noble gases in deformed xenoliths from an Ocean Island: Characterization of a Metasomatic Fluid. in Noble Gas Geochemistry and Cosmochemistry, ed. J. Matsuda, TERRAPUB, Tokyo, p. 159-178.  

1994 Roberts, D. and Onstott, T.C. 40Ar/39Ar laser microprobe analyses and geochemistry of dolerite dykes from the Rybachi and Sredni Peninsulas, NW Kola, Russia. Nor. geol. unders. Special Publ. 7:307- 314.  

1994 Hargraves, R.B., Hattingh, P. J., and Onstott, T.C. Paleomagnetic results from the Timbavati Gabbros in the Kruger National Park, South Africa. S. Afr. J. Geol. 97:1-5. 

1994 Lo, C.H., and Onstott, T.C. An assessment of 40Ar/39Ar dating for the whole-rock volcanic samples from the Luzon Arc near Taiwan.  Chem. Geology (Isotope Geoscience Section) 114:157-178. 

1993  Hamidullah, S. and Onstott, T.C. 40Ar/39Ar evidence for Late Cretaceous formation of the Kohistan Island Arc, NW Pakistan, Kashmir Journal of Geology 10:105-122.

1993  Lo, C-H, Onstott, T.C., and Lee, C.W. 40Ar/39Ar dating of plutonic/metamorphic rocks from Chinmen Island off southeast China and its tectonic implications. Jour. Geol. Soc. China 36:35-55. 

1993  Cohen, H.A., Cumbest, R.J., and Onstott, T.C. Alumina ceramic as a mounting medium for electron Microprobe Analysis and 40Ar/39Ar laser microprobe dating of mineral grains. Chem. Geol. Isot. Geosci.  Sec. 106:443-452.   

1992  Haeussler, P.J., Coe, R.S., and Onstott, T.C. The paleomagnetism and geochronology of the Hound Island volcanics and implication for the Mesozoic tectonics of the Alexander terrane. Jour. Geophys. Res. B13: 19617-19641.  

1991  Onstott, T.C., Phillips, D., and Pringle-Goodell, L. Laser microprobe measurement of chlorine and argon zonation in hydrous silicates. Chem. Geol. 90:145-168.  

1991  D'Agrella, M.S., Pacca, I.G., Teixeira, W. Onstott, T.C., and Renne, P.R. Paleomagnetism evidence for the evolution of Meso to Neo-Proterozoic glaciogenic rocks in Central-Eastern Brazil. Paleoecol. Paleoclim. Paleobot. 80:255-265.  

1991  D'Agrella, M.S., Pacca, I.G., Renne, P.R., T.C. Onstott, and Teixeira, W. Paleomagnetism of Middle Proterozoic (1.01 to 1.08 Ga) mafic dikes in South-eastern Bahia State - Sao Francisco Craton, Brazil. Earth Planet. Sci. Lett. 101:332-348.  

1991  Renne, P.R., Onstott, T.C., D'Agrella, M.S., Pacca, I.G., and Teixeira, W. 40Ar/39Ar dating of 1.0-1.1 Ga magnetizations from the Sao Francisco and Kaapvaal Cratons: Tectonic implications for Pan-African and Brasiliano Mobile Belts.  Earth Planet. Sci. Lett. 101:349-359. 

1991 Wood, D.J., Stowell, H.H., Onstott, T.C., and Hollister, L.S. 40Ar/39Ar constraints on the emplacement, uplift and cooling of the coast plutonic complex sill, SE Alaska. Geol. Soc. Amer. Bull. 103:849-860. 

1991 Girard, J-P, and Onstott, T.C. 40Ar/39Ar laser-probe and step-heating dating of diagenetic K-feldspar overgrowths. Geochim. Cosmochim. Acta. 55:3777-3793. 

1991 Lee, J.W.K., Onstott, T.C., Cashman, K.V., Cumbest, R.J., and Johnson, D. A critical evaluation of the 40Ar/39Ar Incremental Heating of Hornblende, Geology 19:872-876. 

1991 Reid, D.L., Ransome, I.G.D., Onstott, T.C., and Adams, C.J.  Late Precambrian mafic dykes in the lower Orange River region, southern Africa. Possible constraints on the age of the Precambrian-Cambrian boundary. Jour. African Earth Sci. 13:531-541.  

1990 Kent, J.T., Watson, G.S., and Onstott, T.C. Fitting Straight Lines and Planes with an application to radiometric dating. Earth Planet. Sci. Lett. 97:1-17.  

1990 Lee, J.K.W., Onstott, T.C., and Hanes, J.A.  An 40Ar/39Ar investigation of the contact effects of a dyke intrusion, Kapuskasing Structural zone, Ontario: A comparison of laser microprobe and furnace extraction techniques. Contrib. Mineral. Petrol. 105:87-105. 

1989 Onstott, T.C., Sisson, V.B. and Turner, D.L., Initial argon in amphiboles from the Chugach Mountains, Alaska. Jour. Geophys. Res. 94:4361-4373. 

1989  Sisson, V.B., Hollister, L.S. and Onstott, T.C. Petrological and age constraints on the origin of a low pressure/high temperature metamorphic complex, southern Alaska. Jour. Geophys. Res. 94:4392-4410.  

1989 Onstott, T.C., York, D. and Hall, C.M. 40Ar/39Ar thermochronometry of the Imataca Complex, Venezuela. Precambrian Res. 42:255-292. 

1989 Swapp, S.M. and Onstott, T.C. P-T-time characterization of the Trans-Amazonian Orogeny in the Imataca Complex, Venezuela, Precamb. Res. 42,:293-314. 

1989 Renne, P.R., Mattinson, J.M., Hatten C.W., Somin, M., Onstott, T.C., Guillermo, M., and Linares, E. 40Ar/39Ar and U-Pb evidence for Late Proterozoic (Grenville-age) continental crust in north-central Cuba and regional tectonic implications. Precamb. Res. 42:325-342. 

1989 Phillips, D., Onstott, T.C., and Harris, J.W. 40Ar/39Ar dating of eclogite inclusions from Premier diamonds. Nature, 340, 460-462. (Cover photo). 

1989 Lo, C.H. and Onstott, T.C. 39Ar recoil artifacts in chloritized biotite. Geochim. Cosmochim. Acta, 53, 2697-2711. 

1988 Phillips, D. and Onstott, T.C. Argon isotopic zoning in mantle phlogopite. Geology 16:542-546. 

1988 Onstott, T.C., Pringle-Goodell, L. The influence of microstructures on the relationship between argon retentivity and chemical composition of hornblende. Geochim. Cosmochim. Acta. 52:2167-2168. 

1988 Renne, P. R. and Onstott, T.C. Laser selective demagnetization (LSD): Application of a new technique in paleomagnetism and rock magnetism. Science 242:1152-1155. 

1988 Hanson, R.E., Wilson, T.J., Brueckner, H.K., Onstott, T.C., Wardlaw, M.S., Johns, C.C. and Hardcastle, K.C. Reconnaissance geochronology, tectonothermal evolution, and regional significance of the middle Proterozoic Choma-Kalomo Block, southern Zambia. Precambrian Res. 42:39-62. 

1987 Onstott, T.C. and Dorbor, J. 40Ar/39Ar calibration of paleomagnetic poles from the West African Shield. Jour. Afr. Earth Sci. 6:537-552. 

1987 Onstott, T.C. and Peacock, M. Argon retentivity of hornblende: a field experiment in a slowly-cooled metamorphic terrane. Geochim. Cosmochim. Acta. 51:2891-2903. 

1987 Diehl, J.F., Onstott, T.C., Chesner, C.A. and Knight, M.D. No short reversals of Brunhes age recorded in the Toba Tuffs, North Sumatra, Indonesia. Geophys. Res. Lett. 14:753-756. 

1986 Phillips, D. and Onstott, T.C. Application of 40Ar/39Ar versus 40Ar/39Ar correlation diagrams to the 40Ar/39Ar spectra of phlogopites from southern African kimberlites. Geophys. Res. Lett. 13:689-692. 

1986 Sisson, V.B. and Onstott, T.C. Dating blueschist metamorphism: a combined 40Ar/39Ar and electron microprobe approach. Geochim. Cosmochim. Acta 55:2111-2117. 

1986 Onstott, T.C., Hargraves, R.B., Joubert, P. and Reid, D., Constraints on the tectonic evolution of the Namaqualand mobile belt I: Paleomagnetic and 40Ar/39Ar results from the Haib-Vioolsdrif Igneous Province. Bull. Geol. Soc. S. Afr. 89:117-142. 

1986 Onstott, T.C., Hargraves, R.B. and Joubert, P. Constraints on the tectonic evolution of the Namaqualand mobile belt II: Reconnaissance paleomagnetic and 40Ar/39Ar results from the Namaqua, Kheis, and Natal provinces. Bull. Geol. Soc. S. Afr. 89:143-170. 

1986 Onstott, T.C., Hargraves, R.B. and Reid, D. Constraints on the tectonic evolution of the Namaqualand mobile belt III: Paleomagnetic and 40Ar/39Ar results from the Gannakouriep Dike Swarm. Bull. Geol. Soc. S. Afr. 89:171-183. 

1984 Onstott, T.C., Hargraves, R.B., York, D. and Hall, C.M. Constraints on the Proterozoic motions of the South American and African cratons -- I:  40Ar/39Ar and paleomagnetic correlations between Venezuela and Liberia.  Geol. Soc. Amer. Bull. 95:1045-1054. 

1981 Onstott, T.C. and Hargraves, R.B., Proterozoic transcurrent-tectonics: Evidence from comparison of paleomagnetic data from Venezuela and Africa.  Nature 289:131-136. 

1980 Hargraves, R.B. and Onstott, T.C., Paleomagnetic results from some southern African kimberlites, and their tectonic significance.  Jour. Geophys. Res. 85:3587-3596.  

1980 Onstott, T.C. Application of the Bingham distribution function to paleomagnetic studies. Jour. of Geophys. Res. 85:1500-1510. 

Other publications

2011 Onstott, T.C. The Hidden Universe, Princeton University Press, in preparation.

2011 Onstott, T.C. Deep-Subsurface Microbiology in Encyclopedia of Astrobiology, Muriel Gargaud (ed.), DOI 10.1007/978-3-642-11274-4, Springer-Verlag Berlin, Heidelberg.

2010 Onstott, T.C. Focus On: Subsurface Microbiology Publications. DUSEL Newsletter May.

2010 Onstott, T.C. Focus On: Microbes. DUSEL Newsletter May.

2010 Onstott, T.C., van Heerden, E. and Murdoch, L., Microbial Life in the Depths of the Earth, Géosciences, la revue du BRGM pour une Terre Durable 11:52-59.

2010 Elsworth, D., Elliott, S., Fairhurst, C., Leitner, D., Murdoch, L., Onstott, T., Sobel, H., Sonnenthal, E., Lesko, K., Roggenthen, W. 2009. Underground Science at DUSEL: A window into the Heavens and the Earth. Newsletter, Int. Soc. R. Mechs. No. 10, June.

2009 Elsworth, D., Elliott, S., Leitner, D., Murdoch, L., Onstott, T., Sobel, H., Lesko, K., Roggenthen, W. 2009. Underground Science at DUSEL: A window into the Heavens and the Earth. GeoStrata. 24-27.

2009 Onstott, T.C., F. S. Colwell, T. L. Kieft, L. Murdoch, and T. J. Phelps, New Horizons for Deep Subsurface Microbiology.   Microbe 4:499-505.

2002 Onstott, T.C., Biogeochemical and geological significance of subsurface microbiology, In (G. Bitton. ed.), Encyclopedia of Environmental Microbiology, John Wiley Press, New York, New York, 1453-1468.

2002 Colwell, F.S., Yao, Q-J, Onstott, T.C. and Murphy, E., Microbiology of deep high-temperature sedimentary environments, In (G. Bitton. ed.), Encyclopedia of Environmental Microbiology, John Wiley Press, New York, New York, 2047-2057.

2001 Balkwill, D., Chen, J., DeFlaun, M.F., Dobbs, F., Dong, H., Fredrickson, J.K., Fuller, M.E., Green, M., Ginn, T., Griffin, T., Holben, W.E., Hubbard, S.S., Johnson, W.P., Long, P.E., Mailloux B.J., Majer, E., McInerney, M., Murray, C.J., Onstott, T.C., Phelps, T.J., Scheibe, T., Swift, D.P., White, D.C. and Wobber, F.J. (2001) Breakthroughs In Field-Scale Bacterial Transport. EOS, 82, 417-425.

2000 Fredrickson, J.K. and Onstott, T.C., Biogeochemical and geological significance of subsurface microbiology, in Subsurface Microbial Ecology and Biogeochemistry (eds. Fredrickson, J.K. and Fletcher, M.) John Wiley & Sons: Ecological and Applied Microbiology Series. Chap. 1, p. 3-38.

1998 White, D.C., Phelps, T.J., and Onstott, T.C., What’s up down there? Current Opinion in Microbiology 1: 286-290.

1997 Fredrickson, J.K., Chandler, D.P. and Onstott, T.C., Potential for preservation of Halobacteria and their macromolecular constituents in brine inclusions from bedded salt deposits, SPIE 42nd Annual Mtg. Proceedings, 3111:318-329.

1997 Onstott, T.C., Tobin, K., Dong, H., DeFlaun, M.F., Fredrickson, J.K., Bailey, T., Brockman, F., Kieft, T., Peacock, A., White, D.C., and Balkwill, D., The deep gold mines of South Africa: Window into the subsurface biosphere.   SPIE 42nd Annual Mtg. Proceedings, 3111:344-357.

1996 Fredrickson, J.K. and Onstott, T.C., Microbes Deep inside the Earth, Scientific American, v. 275, No. 4, p. 68-73.

1994 Onstott, T.C., Balkwill, D.B., Boone, D.R., Colwell, F.S., Griffin, T., Kieft, T.L., Lehman, R.M., McKinley, J.P., Nierzwicki-bauer, S., Tseng, H-Y, Gao, G., Phelps, T.J., Ringelberg, D., Russell, B., Stevens, T., White, D.C., and Wobber, F.J., DOE seeks origin of deep subsurface bacteria.   EOS, 75, 385-395.