Publications

submitted 2007

• Pfiffner SM, Onstott TC, Ruskeeniemi T, Talikka M, Bakermans C, McGown D, Chan E, Johnson A, Phelps TJ, Le Puil M, Difurio SA, Pratt LM, Stotler R, Frape S, Telling J, Sherwood Lollar B, Neill I & Zerbin B (submitted 2007): Challenges for coring deep permafrost on earth and Mars. Astrobiology, Submitted.

in prep.

• Gihring TM, Moser DP, Morgan LE, Sherwood Lollar B, Pfiffner S, Boice EA, Pratt LM, Fredrickson JK, Brockman FJ & Onstott TC (in prep.): Microbial communities inhabiting a dolomite aquifer 896 m below the surface. .

2008

• Gilfillan SM, Ballentine CJ, Holland G, Blagburn D, Sherwood Lollar B, Stevens S, Schoell M & Cassidy M (2008): The noble gas geochemistry of natural CO2 gas reservoirs from the Colorado Plateau and Rocky Mountain provinces, USA. Geochim. Cosmochim. Acta., 72:1174-1198.
• VanStone N, Elsner M, Lacrampe-Couloume G, Mabury S & Sherwood Lollar B (2008): Potential for identifying abiotic chloroalkane degradation mechanisms using carbon isotope fractionation. Environmental Science & Technology, 42:126-132.

2007

• Chartrand MM, Hirschorn SK, Lacrampe-Couloume G & Sherwood Lollar B (2007): Compound specific hydrogen isotope analysis of 1,2-dichloroethane: New constraints on source and fate of chlorinated hydrocarbon contaminants in groundwater. Rapid Communications in Mass Spectrometry, 21:1841-1847.
• Elsner M, Cwiertny DM, Roberts AL & Sherwood Lollar B (2007): 1,1,2,2-Tetrachloroethane reactions with OH-, Cr(II), granular iron and a copper-iron bimetal: Insights from product formation and associated carbon isotope fractionation. Environmental Science & Technology, 41:4111–4117.
• Elsner M, McKelvie J, Lacrampe-Couloume G & Sherwood Lollar B (2007): Stable isotope fractionation associated with acid hydrolysis and permanganate oxidation of methyl tert-butyl ether (MTBE). Environmental Science & Technology, 41:5693–5700.
• Fu Q, Sherwood Lollar B, Horita J, Lacrampe-Couloume G & Seyfried JW (2007): Abiotic formation of hydrocarbons under hydrothermal conditions: Constraints from chemical and isotope data. Geochimica et Cosmochimica Acta, 71:1982–1998.
• Hirschorn SK, Dinglasan MJ, Edwards EA, Lacrampe-Couloume G & Sherwood Lollar B (2007): Compound specific isotope analysis as a natural reaction probe to determine biodegradation mechanisms. Environmental Microbiology, 9:1651–1657.
• Hirschorn SK, Grostern A, Lacrampe-Couloume G, Edwards EA, MacKinnon L, Repta C, Major DW & Sherwood Lollar B (2007): Quantification of biodegradation of chlorinated hydrocarbons: Added value via stable carbon isotope analysis. Journal of Contaminant Hydrology, 94:249–260.
• Mancini SA, Lacrampe-Couloume G, Baker J & Sherwood Lollar B (2007): Source differentiation at a contaminated field site using stable carbon and hydrogen isotope signatures. Environmental Forensics, in press.
• McKelvie JR, Hirschorn SK, Lacrampe-Couloume G, Lindstrom JE, Braddock J, Finneran K, Trego D & Sherwood Lollar B (2007): Evaluation of TCE and MTBE in situ biodegradation: Integrating stable isotope, metabolic intermediate, and microbial lines of evidence. Ground Water Monitoring and Remediation, 27:63–73.
• McKelvie JR, Mackay D, deSieyes N, Lacrampe-Couloume G & Sherwood Lollar B (2007): Quantifying MTBE biodegradation in the Vandenberg Air Force Base ethanol release study using stable carbon isotopes. Journal of Contaminant Hydrology, 94:157–165.
• Newell KD, Doveton JH, Merriam DF, Sherwood Lollar B, Waggoner W & Magnuson LM (2007): H2-rich and hydrocarbon gas recovered from a deep Precambrian well in northeastern Kansas. Natural Resources Research, 16:1573–8981.
• Sherwood Lollar B, Hirschorn SK, Chartrand MM & Lacrampe-Couloume G (2007): An approach for assessing total instrumental uncertainty in compound specific isotope analysis: Implications for environmental remediation studies. Analytical Chemistry, 79:3469–3475.
• Sherwood Lollar B, Voglesonger K, Lin L, Lacrampe-Couloume G, Telling J, Abrajano TA, Onstott TC & Pratt LM (2007): Hydrogeologic controls on episodic H2 release from Precambrian fractured rocks - Energy for deep subsurface life on Earth and Mars. Astrobiology, 7(6):971-986.

2006

• Allen M, Sherwood Lollar B, Runnegar B, Oehler DZ, Lyons JR, Manning CE & Summers ME (2006): Is Mars Alive?. EOS, 87:433,–448.
• Beller HR, McKelvie JR & Sherwood Lollar B (2006): Chapter 2: Specific evidence of in situ hydrocarbon biodegradation: Signature metabolites and stable isotope signatures. - .
• Beranger SC, Sleep B, Sherwood Lollar B & Brown A (2006): Isotopic fractionation of tetrachloroethene undergoing biodegradation supported by endogenous decay. Journal of Environmental Engineering, July 2006:725–735.
• Elsner M, Lacrampe-Couloume G & Sherwood Lollar B (2006): Freezing to preserve groundwater samples and improve headspace quantification limits of water-soluble organic contaminants for carbon isotope analysis. Analytical Chemistry, 78:7528–7534.
• Lin LH, Hall J, Onstott TC, Gihring TM, Sherwood Lollar B, Boice EA, Pratt LM, Lippmann-Pipke J & Bellamy RE (2006): Planktonic microbial communities associated with fracture-derived groundwater in a deep gold mine of South Africa. Geomicrobiology Journal, 23:475–497.
• Lin LH, Wang PL, Rumble D, Lippmann-Pipke J, Boice EA, Pratt LM, Sherwood Lollar B, Brodie EL, Hazen TC, Anderson GL, DeSantis TZ, Moser DP, Kershaw D & Onstott TC (2006): Long-term sustainability of a high-energy, low-diversity crustal biome. Science, 314:479–482.
• Mancini SA, Hirschorn SK, Elsner M, Lacrampe-Couloume G, Sleep B, Edwards AM & Sherwood Lollar B (2006): Effects of trace element concentration on enzyme controlled stable isotope fractionation during aerobic biodegradation of toluene. Environmental Science and Technology, 40:7675–7681.
• Morrill PL, Sleep BE, Slater GF, Edwards EA & Sherwood Lollar B (2006): Evaluation of isotopic enrichment factors for the biodegradation of chlorinated ethenes using a parameter estimation model: Towards an improved quantification of biodegradation. Environmental Science & Technology, 40:3886–3892.
• Onstott TC, Lin LH, Davidson M, Mislowack BJ, Borcsik M, Hall J, Slater GF, Ward JA, Sherwood Lollar B, Lippmann-Pipke J, Boice EA, Pratt LM, Pfiffner S, Moser DP, Gihring TM, Kieft TL, Phelps TJ, Vanheerden E, Litthaur D, DeFlaun M, Rothmel R, Wanger G & Southam G (2006): The origin and age of biogeochemical trends in deep fracture water of the Witwatersrand Basin, South Africa. Geomicrobiology Journal, 23:369–414.
• Onstott TC, McGowan D, Kessler J, Sherwood Lollar B, Lehmann KK & Clifford SM (2006): Martian CH4: sources, flux and detection. Astrobiology, 6:377–395.
• Sherwood Lollar B & McCollom TM (2006): Biosignatures and abiotic constraints on early life. Nature, 444:516–519.
• Sherwood Lollar B, Lacrampe-Couloume G, Slater GF, Ward JA, Moser DP, Gihring TM, Lin LH & Onstott TC (2006): Unravelling abiogenic and biogenic sources of methane in the Earth's deep subsurface. Chemical Geology, 226:328–339.
• Slater GF, Lippmann-Pipke J, Moser DP, Reddy CM, Onstott TC, Lacrampe-Couloume G & Sherwood Lollar B (2006): 14C in methane and DIC in the deep terrestrial subsurface: Implications for microbial methanogenesis. Geomicrobiology Journal, 23:453–462.
• Sleep B, Seepersad DJ, Mo K, Heidorn CM, Hrapovic L, Morrill P, McMaster ML, Hodd ED, LeBron C, Sherwood Lollar B, Major DW & Edwards EA (2006): Biological enhancement of tetrachloroethene dissolution and associated microbial community changes. Environmental Science & Technology, 40:3623–3633.
• Turner J, Albrechtsen HJ, Bonell M, Duguet JP, Harris B, Meckenstock R, McGuire K, Moussa R, Peters N, Richnow HH, Sherwood Lollar B, Uhlenbrook S & van Lanen H (2006): Future trends in transport and fate of diffuse contaminants in catchments, special emphasis on stable isotope applications. Hydrological Processes, 20:205–213.

2005

• Ballentine CJ, Marty B, Sherwood Lollar B & Cassidy M (2005): The Ne isotopic ratio of the convecting mantle and the origin of volatiles in the Earth. Nature, 433:33–38.
• Beranger SC, Sleep BE, Sherwood Lollar B & Perez Monteagudo F (2005): Transport, biodegradation and isotopic fractionation of chlorinated ethenes: Modeling and parameter estimation methods. Advances in Water Resources, 28:87–98.
• Chartrand MM, Morrill P, Lacrampe-Couloume G & Sherwood Lollar B (2005): Stable isotope evidence for biodegradation of chlorinated ethenes at a fractured bedrock site. Environmental Science & Technology, 39:4848–4856.
• Chartrand MM, Waller A, Mattes TE, Elsner M, Lacrampe-Couloume G, Gossett JM, Edwards EA & Sherwood Lollar B (2005): Carbon isotopic fractionation during aerobic vinyl chloride degradation. Environmental Science & Technology, 39:1064–1070.
• Kieft TL, McCuddy SM, Onstott TC, Davidson M, Lin LH, Mislowack B, Pratt L, Boice E, Sherwood Lollar B, Lippmann-Pipke J, Pfiffner SM, Phelps TJ, Gihring T, Moser D & Van Heerden A (2005): Geochemically generated, energy-rich substrates and indigenous microorganisms in deep, ancient groundwater. Geomicrobiology Journal, 22:1–11.
• Lin LH, Hall J, Lippmann-Pipke J, Ward JA, Sherwood Lollar B, DeFlaun M, Rothmel R, Moser DP, Gihring TM, Mislowack BJ & Onstott TC (2005): Radiolytic H2 in the continental crust: Nuclear power for deep subsurface microbial communities. Geochemistry, Geophysics, Geosystems, 6.
• Lin LH, Slater GF, Sherwood Lollar B, Lacrampe-Couloume G & Onstott TC (2005): The yield and isotopic composition of radiolytic H2, a potential energy source for the deep subsurface biosphere. Geochimica et Cosmochimica Acta, 69:893–903.
• McKelvie JR, Lindstrom JE, Beller HR, Richmond SA & Sherwood Lollar B (2005): Analysis of anaerobic BTX biodegradation in a subarctic aquifer using isotopes and benzylsuccinates. Journal of Contaminant Hydrology, 81:167–186.
• Morrill P, Lacrampe-Couloume G, Slater GF, Sleep BE, Edwards EA, McMaster ML, Major DW & Sherwood Lollar B (2005): Quantifying chlorinated ethene degradation during reductive dechlorination at Kelly AFB using stable carbon isotopes. Journal of Contaminant Hydrology, 76:279–293.
• Moser DP, Gihring TM, Brockman FJ, Fredrickson JK, Balkwill DL, Dollhopf ME, Sherwood Lollar B, Pratt LM, Boice EA, Southam G, Wanger G, Baker BJ, Pfiffner SM, Lin LH & Onstott TC (2005): Desulfotomaculum and Methanobacterium spp. dominate a 4- to 5-km deep fault. Applied and Environmental Microbiology, 71:8773–8783.
• Sleep BE, Brown AJ & Sherwood Lollar B (2005): Long-term tetrachloroethene degradation sustained by endogenous cell decay. J. Environ. Engineering and Science, 4:11–17.
• VanStone NA, Przepiora A, Vogan J, Powers B, Perez E, Mabury SA & Sherwood Lollar B (2005): Monitoring trichloroethene remediation at an iron permeable reactive barrier using stable carbon isotopic analysis. Journal of Contaminant Hydrology, 78:313–325.

2004

• Hirschorn SK, Dinglasan MJ, Elsner M, Mancini SA, Lacrampe-Couloume G, Edwards EA & Sherwood Lollar B (2004): Pathway dependant isotopic fractionation during aerobic biodegradation of 1,2-dichloroethane. Environmental Science and Technology, 38:4775–4781.
• Morrill P, Lacrampe-Couloume G & Sherwood Lollar B (2004): Dynamic headspace: A single-step extraction for isotopic analysis of ug/L concentrations of dissolved chlorinated ethenes. Rapid Communications in Mass Spectrometry, 18:595–600.
• Sherwood Lollar B (2004): Life's Chemical Kitchen. Science, 304:972–973.
• VanStone NA, Focht RM, Mabury SA & Sherwood Lollar B (2004): Effect of iron type on kinetics and carbon isotopic enrichment of chlorinated ethylenes during abiotic reduction on Fe0. Ground Water, 42:268–276.
• Ward JA, Slater GF, Moser DP, Lin LH, Lacrampe-Couloume G, Bonin AS, Davidson M, Hall JA, Mislowack BJ, Bellamy RE, Onstott TC & Sherwood Lollar B (2004): Microbial hydrocarbon gases in the Witwatersrand Basin, South Africa: Implications for the deep biosphere. Geochimica et Cosmochimica Acta, 68:3239–3250.

2003

• Baker BJ, Moser DP, MacGregor BJ, Fishbain S, Wagner M, Fry NK, Jackson B, Speolstra N, Loos S, Takai K, Sherwood Lollar B, Fredrickson JK, Balkwill D, Onstott TC, Wimpee CF & Stahl DA (2003): Related assemblages of sulphate-reducing bacteria associated with ultradeep gold mines of South Africa and deep basalt aquifers of Washington State. Environmental Microbiology, 5:267–277.
• Mancini SA, Ulrich AC, Lacrampe-Couloume G, Sleep BE, Edwards EA & Sherwood Lollar B (2003): Carbon and hydrogen isotope fractionation during anaerobic biodegradation of benzene. Applied and Environmental Microbiology, 69:191–198.
• Moser DP, Onstott TC, Fredrickson JK, Brockman F, Balkwill D, Pfiffner S, White DC, Takai K, Pratt LM, Fong J, Sherwood Lollar B, Slater GF, Phelps TJ, Spoelstra N, DeFlaun M, Southam G, Welty AT, Baker B & Hoek J (2003): Temporal shifts in microbial community structure and geochemistry of an ultradeep South African gold mine borehole. Geomicrobiology Journal, 20:517-548.
• Slater G, Lesage S, Brown S & Sherwood Lollar B (2003): Stable carbon isotopic fractionation during reductive dechlorination of PCE and TCE by vitamin B-12. Ground Water Monitoring and Remediation, 23:59–67.

2002

• Ballentine CJ & Sherwood Lollar B (2002): Regional groundwater focusing of nitrogen and noble gases into the Hugoton-Panhandle giant gas field, USA. Geochim. Cosmochim. Acta., 66:2483–2497.
• Gray JR, Lacrampe-Couloume G, Gandhi D, Scow KM, Wilson RD, Mackay DM & Sherwood Lollar B (2002): Carbon and hydrogen isotopic fractionation during biodegradation of methyl tert-butyl ether. Environmental Science and Technology, 36:1931–1938.
• Mancini SA, Lacrampe-Couloume G, Jonker H, van Breukelen BM, Groen J, Volkering F & Sherwood Lollar B (2002): Hydrogen isotopic enrichment: an indicator of biodegradation at a petroleum hydrocarbon contaminated field site. Environmental Science and Technology, 36:2464–2470.
• Sherwood Lollar B, Westgate TD, Ward JA, Slater GF & Lacrampe-Couloume G (2002): Abiogenic formation of gaseous alkanes in the Earth's crust as a minor source of global hydrocarbon reservoirs. Nature, 416:522–524.
• Slater G, Sherwood Lollar B, Allen King R & O'Hannesin SF (2002): Isotopic fractionation during reductive dechlorination of trichloroethene by zero-valent iron: Influence of surface treatment. Chemosphere, 49:587–596.

2001

• Sherwood Lollar B, Slater GF, Sleep B, Witt M, Klecka GM, Harkness M & Spivack J (2001): Stable carbon isotope evidence for intrinsic bioremediation of tetrachloroethene and trichloroethene at Area 6, Dover Air Force Base. Environmental Science and Technology, 35:261–269.
• Slater GF, Sherwood Lollar B, Sleep BE & Edwards EA (2001): Variability in carbon isotopic fractionation during biodegradation of chlorinated ethenes: Implications for field applications. Environmental Science and Technology, 35:901–907.

2000

• Ahad JM, Sherwood Lollar B, Edwards EA, Slater GF & Sleep BE (2000): Carbon isotope fractionation during anaerobic biodegradation of toluene: Implications for intrinsic bioremediation. Environmental Science and Technology, 34:892–896.
• Lee R, Jones SA, Kuniansky EL, Harvey G, Sherwood Lollar B & G. F. S (2000): Phreatophyte influence on reductive dechlorination in a shallow aquifer contaminated with trichloroethene (TCE). Phytoremediation Journal, 2:193–211.
• Slater GF, Ahad JM, Sherwood Lollar B, Allen-King R & Sleep B (2000): Carbon isotope effects resulting from equilibrium sorption of dissolved VOCs. Analytical Chemistry, 72:5669–5672.
• Taylor SW, Sherwood Lollar B & Wassenaar L (2000): Bacteriogenic ethane in near-surface aquifers: implications for leaking hydrocarbon well bores. Environmental Science & Technology, 34:4727–4732.
• Ward JA, Ahad JM, Lacrampe-Couloume G, Slater GF, Edwards EA & Sherwood Lollar B (2000): Hydrogen isotope fractionation during methanogenic degradation of toluene: potential for direct verification of bioremediation. Environmental Science and Technology, 34:4577–4581.
• Williams-Jones G, Stix J, Heiligmann M, Charland A, Sherwood Lollar B, Arner N, Garzon G, Barquero J & Fernandez E (2000): A model of diffuse degassing at three subduction-related volcanoes. Bull. Volcanol, 62:130–142.

1999

• Abrajano TA & Sherwood Lollar B (1999): Introductory Note; Compound-specific isotope analysis: tracing organic contaminant sources and processes in geochemical systems. Organic Geochemistry, 30:v–vii.
• Sherwood Lollar B & Abrajano TA (ed.) (1999): ``Compound-Specific Isotope Analysis: Tracing Organic Contaminant Sources and Processes in Geochemical Systems''. , vol. 30. Org. Geochem. Special Volume.
• Sherwood Lollar B, Slater GF, Ahad J, Sleep B, Spivack J, Brennan M & MacKenzie P (1999): Contrasting carbon isotope fractionation during biodegradation of trichloroethylene and toluene: implications for intrinsic bioremediation. Organic Geochemistry, 30:813–820.
• Slater GF, Dempster HS, Sherwood Lollar B & Ahad J (1999): Headspace analysis: A new application for isotopic characterization of dissolved organic contaminants. Environmental Science and Technology, 33:190–194.

1998

• Desrocher S & Sherwood Lollar B (1998): Isotopic constraints on off-site migration of landfill CH4. Ground Water, 36:801–809.

1997

• Dempster HS, Sherwood Lollar B & Feenstra S (1997): Tracing organic contaminants in groundwater: A new methodology using compound specific isotopic analysis. Environmental Science and Technology, 31:3193–3197.
• Desrocher S & Sherwood Lollar B (1997): Isotopic and geochemical characterization of landfill methane. In: Eyles, N. (ed.): Environmental Geology of Urban Areas, pp. 365–371, Geological Association of Canada.
• Heiligmann N, Sitx J, Garzon G, Williams-Jones G & Sherwood Lollar B (1997): Distal degassing of radon and carbon dioxide on Galeras volcano, Columbia. Journal of Volcanic and Geothermal Research, 77:267–284.
• Sherwood Lollar B, Ballentine CJ & O'Nions RK (1997): The fate of mantle-derived carbon in a continental sedimentary basin: Integration of C/He relationships and stable isotope signatures. Geochimica et Cosmochimica Acta, 61:2295–2307.

1996

• Schultze-Lam S, Ferris FG, Sherwood Lollar B & Gerits JP (1996): Ultrastructure and seasonal growth patterns of microbial mats in a temperate climate saline-alkaline lake: Goodenough Lake, British Columbia, Canada. Can. J. of Microbiology, 42:147–161.

1995

• Doig F, Sherwood Lollar B & Ferris FG (1995): Microbial communities in deep Canadian Shield groundwater - An in situ biofilm experiment. Geomicrobiology Journal, 13:91–102. - title self-explanatory; not related to my work.
• Ferris FG, Fratton CM, Gerits J, Schultze-Lam S & Sherwood Lollar B (1995): Microbial precipitation of a strontium - calcite phase at a groundwater seep near Rock Creek, British Columbia, Canada. Geomicrobiology Journal, 13:57–67.

1994

• Sherwood Lollar B, Frape SK & Weise SM (1994): New sampling devices for environmental characterization of groundwater and dissolved gas chemistry (CH4, N2, He). Environmental Science & Technology, 28:2423–2427.
• Sherwood Lollar B, O'Nions RK & Ballentine CJ (1994): Helium and neon isotope systematics in carbon dioxide-rich and hydrocarbon-rich gas reservoirs. Geochimica et Cosmochimica Acta, 58:5279–5290.
• Sherwood Lollar B, Weise SM, Frape SK & Barker JF (1994): Isotopic constraints on the migration of hydrocarbon and helium gases of southwestern Ontario. Bulletin of Canadian Petroleum Geology, 42:283–295.

1993

• Sherwood Lollar B, Frape SK, Fritz P, Macko SA & Welhan JA (1993): Evidence for bacterially generated hydrocarbon gas in Canadian Shield and Fennoscandian Shield rocks. Geochim. Cosmochim. Acta., 57:5073–5085.
• Sherwood Lollar B, Frape SK, Weise SM, Fritz P, Macko SA & Welhan JA (1993): Abiogenic methanogenesis in crystalline rocks. Geochimica et Cosmochimica Acta, 57:5087–5097.

1990

• Sherwood Lollar B (1990): Origins and implications of methane in the crystalline environment - the Canadian and Fennoscandian Shields. - PhD thesis. - 402 p.