Publications

32    Sherwood Lollar, B., Warr, O.  and Higgins, P.M. (2024) The Hidden Hydrogeosphere – An expanded vision of the Planetary Water Cycle. Annual Review of Earth and Planetary Sciences. In Press.

31.   Ferguson, G., McIntosh, J.C., Warr, O. and Sherwood Lollar, B. (2023) The Low Permeability of the Earth’s Precambrian Crust. Nature Communications Earth and Environment 4, 323.

30.   Nisson, D.M., Walters, C., Chacon- Patiño, M., Weisbrod, C.R., Kieft, T.L., Sherwood Lollar, B., Warr, O., Castillo, J., Perl, S.M., Cason, E., Friefeld, B.M. and Onstott, T.C. (2023) Radiolytically reworked Archean organic matter in a habitable deep ancient high-temperature brine. Nature Communications 14, 6163.

29. Warr, O., Smith, N.J.T., and Sherwood Lollar, B. (2023) Hydrogeochronology: resetting the timestamp for subsurface groundwaters. Geochimica et Cosmochimica Acta 348, 221-238.

28.     Warr, O., Song, M., and Sherwood Lollar, B. (2023) The application of Monte Carlo modelling to quantify in situ hydrogen and associated element production in the deep subsurface. Frontiers Earth Science. 11:1150740.

27. Liu, J., Harris, R.L., Ash, J.L., Ferry, J.G., Krause, S.J.E., Labidi, J., Prakash, D., Sherwood Lollar, B.,  Treude, T., Warr, O. and Young E.D. (2023) Reversibility controls on extreme methane clumped isotope signatures from anaerobic oxidation of methane. Geochimica et Cosmochimica Acta (in press).

26. Nisson, D.M., Kieft, T.L., Drake, H., Warr, O., Sherwood Lollar, B., Ogosawara, H., Perl, S.M., Friefeld, B.M. and Onstott, T.C. (2023) Hydrogeochemical and isotopic signatures elucidate the formation and habitability of a 3.2 km deep subsurface hypersaline brine. Geochimica et Cosmochimica Acta 340, 65-84.

25. Phillips, E., Bergquist, B.A., Chartrand, M.M.G., Chen, W., Edwards, E.A., Elsner, M., Gilevska, T., Hirschorn, S., Horst, A., Lacrampe-Couloume, G., Mancini, S.A., McKelvie, J., Morrill, P.L., Ojeda, A. S., Slater, G.F., Sleep, B.E., De Vera, J., Warr O. and E. Passeport. (2022) Compound Specific Isotope Analysis in Hydrogeology. Journal of Contaminant Hydrology 615, 128588.

24.   Warr, O., Ballentine, C.J., Onstott, T.C., Nisson, D.M., Kieft, T.L., Hillegonds, D.J. and Sherwood Lollar, B. (2022) 86Kr excess and other noble gases identify a billion-year-old radiogenically-enriched groundwater system. Nature Communications 13, 3768..

23.   Karolytė, R., Warr, O., van Heerden, E., Flude, S., de Lange, F, Webb, S., Ballentine, C.J., Sherwood Lollar, B. (2022) The role of porosity in H2/He production ratios in fracture fluids from the Witwatersrand Basin, South Africa. Chemical Geology 595, 120788.

22.   Li, L., Li, K., Giunta., T., Warr, O., Labidi., J. Sherwood Lollar, B (2021). N2 in deep subsurface fracture fluids of the Canadian Shield: Source and possible recycling processes. Chemical Geology 585, 120571.

21.   Tyne, R.L., Barry, P.H., Lawson, M., Byrne, D.J., Warr, O., Xie, H., Hillegonds, D.J., Formolo, M., Summers, Z., Eiler, J.M. and Ballentine, C.J. (2021) Rapid microbial methanogenesis during CO2 storage in hydrocarbon reservoirs. Nature 600, 670–674.

20.   Cheng, A., Sherwood Lollar, B., Warr, O., Ferguson, G., Idiz, E., Mundle, S.O.C., Barry, P.H., Byrne, D.J., Mabry, J.C., and Ballentine, C.J. (2021) Determining the role of diffusion and basement flux in controlling 4He distribution in sedimentary basin fluids. Earth and Planetary Science Letters 54, 117175.

19.   Sanz-Robinson, J., Brisco, T., Warr, O., Jabeen, I., Lacrampe-Couloume, G., Hanley J.J. and Sherwood Lollar, B. (2021). Advances in carbon isotope analysis of trapped methane and volatile hydrocarbons in crystalline rock cores. Rapid Communications in Mass Spectrometry 35, e9170.

 18.   Ferguson, G., McIntosh, J.C., Warr, O., Sherwood Lollar, B., Ballentine, C. J., Famiglietti, J., Kim, J-H., Michalski, J.R., Tarnas, J.D. and McDonnell, J.J. Global crustal groundwater volumes larger than previous estimates. Geophysical Research Letters, e2021GL093549.

17.   Tarnas, J., Mustard, J.F., Sherwood Lollar, B., Stamenković, V., Cannon, K.M., Lorand, J.-P., Onstott, T.C., Michalski, J.R., Warr, O., Palumbo, A.M. and Plesa A.-C. (2021) Earth-like habitable environments in the subsurface of Mars. Astrobiology 21, 741-756.

 16.   Warr, O., Young, E.D., Giunta, T., Kohl, I.E., Ash, J. and Sherwood Lollar, B. (2021a) High-resolution, long-term isotopic and isotopologue variation identifies the sources and sinks of methane in a deep subsurface carbon cycle. Geochimica et Cosmochimica Acta 294, 315-334.

 15.   Warr, O., Giunta, T., Onstott, T.C., Kieft, T.L., Harris, R.L., Nisson, D.M. and Sherwood Lollar, B. (2021b) The role of low-temperature 18O exchange in the isotopic evolution of deep subsurface fluids. Chemical Geology 561, 120027. 

14.   Sherwood Lollar, B., Heuer, V.B., McDermott, J.M, Tille, S., Warr, O., Moran, J.J., Telling, J. and Hinrichs, K-U. (2021) A window into the abiotic carbon cycle – Acetate and formate in fracture waters in 2.7-billion-year-old host rocks of the Canadian Shield. Geochimica et Cosmochimica Acta 294, 265-314.

13.   Wilpiszeski, R.L., Sherwood Lollar, B., Warr, O. and House, C.H. (2020) In Situ Growth of Halophilic Bacteria in Saline Fracture Fluids from 2.4 km below Surface in the Deep Canadian Shield. Life 10,301.

12.   Labidi, J., Barry, P.H., Bekaert, D.V., Broadley, M.W. Marty, B., Giunta, T., Warr, O., Sherwood Lollar, B., Fischer, T.P., Avice, G., Caracausi, A., Ballentine, C.J., Halldórsson, S., Stefánsson, A., Kohl, I. and Young, E.D. (2020) Hydrothermal 15N15N abundances constrain the origins of mantle nitrogen. Nature 580, 367–371.

11.   Warr, O., Giunta, T., Ballentine, C.J. and Sherwood Lollar, B. (2019) Mechanisms and rates of 4He, 40Ar, and H2 production and accumulation in fracture fluids in Precambrian Shield environments. Chemical Geology 590 119322.

10.   Lollar, G., Warr, O., Telling, J., Osburn, M.R. and Sherwood Lollar, B. (2019) ‘Follow the Water’: Hydrogeochemical Constraints on Microbial Investigations 2.4 km Below Surface at the Kidd Creek Deep Fluid and Deep Life Observatory. Geomicrobiology Journal July 2019.

9. Giunta, T., Young, E.D., Warr, O., Kohl, I.E., Ash, J., Martini, A.M. and Sherwood Lollar, B. (2019) Methane sources and sinks in continental sedimentary systems: New insights from paired clumped isotopes 13CH3D and 12CH2D2. Geochimica et Cosmochimica Acta 245, 327-351.

8. Warr, O., Sherwood Lollar, B., Fellowes, J., Sutcliffe, C.N, McDermott, J.M, Holland, G., Mabry, J.C. and Ballentine, C.J. (2018) Tracing ancient hydrogeological fracture network age and compartmentalisation using noble gases. Geochimica et Cosmochimica Acta. 222, 340-362.

7. Heard, A.H., Warr, O., Borgonie, G., Linage, B., Kuloyo, O., Fellowes, J.W., Magnabosco, C., Lau, M.C.Y., Erasmus, M., Cason, E.D., van Heerden, E., Kieft, T.L., Mabry, J.C., Onstott, T.C., Sherwood Lollar, B. and Ballentine, C. J. (2018) South African Crustal fracture fluids preserve paleometeoric water signatures for up to tens of millions of years. Chemical Geology 493, 379-395.

6. Bickle, M., Kampman, N., Chapman, H., Ballentine, C.J., Dubacq, B., Galy, A., Sirikitputtisak, T., Warr, O., Wigley, M. and Zhou. Z. (2017) Rapid reactions between CO2, brine and silicate minerals during Geological Carbon Storage: Modelling based on a CO2 Injection Experiment. Chemical Geology 468, 17-31.

5. Young, E.D., Kohl, I.E., Sherwood Lollar, B., Etiope, G., Rumble III, D., Li, S., Haghnegahdar, M.A., Schauble, E.A., McCain, K.A., Foustoukos, D.I., Sutcliffe, C., Warr, O., Ballentine, C.J., Onstott, T.C., Hosgormez, H., Neubeck, A., Marques, J.M., Pérez-Rodríguez, I., Rowe, A.R., LaRowe, D.E., Magnabosco, C., Yeung, L.Y., Ash, J.L., and Bryndzia, L.T. (2017) The relative abundances of resolved 12CH2D2 and 13CH3D and mechanisms controlling isotopic bond ordering in abiotic and biotic methane gases. Geochimica et Cosmochimica Acta 203, 235-264.

4. Barry, P.H., Lawson, M., Meurer, W.P., Warr, O., Mabry, J.C., Byrne, D.J. and Ballentine, C.J. (2016) Noble gases solubility models of hydrocarbon charge mechanism in the Sleipner Vest gas field. Geochimica et Cosmochimica Acta 194, 291–309.  

3. Warr, O., Ballentine, C.J., Rochelle, C. and Masters, A., (2016) A dual temperature closed loop batch reactor for determining the partitioning of trace gases within CO2-water systems. Review of Scientific Instruments 87.

2. Warr, O., Masters, A. and Ballentine, C.J. (2015b) Optimizing noble gas-water interactions via Monte Carlo simulations. Journal of Physical Chemistry B 119 (45) 14486-14495.

1. Warr, O., Ballentine, C.J., Rochelle, C. and Masters, A., (2015a) Determining noble gas partitioning within a CO2-H2O system at elevated temperatures and pressures. Geochimica et Cosmochimica Acta 159 112-115.