VITA.93

Refereed Journals and Reviews

1. 2007 Bianca J. Mislowack, 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. Environmental Microbiology submitted.

2. 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. DOI: 10.1089/ast.2006.0096 in press.

3. 2007 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 submitted.

4. 2007 Brian J. Mailloux, Stephanie Devlin, Mark E. Fuller, Tullis C. Onstott, Daniel Sigman, Kenneth H. Williams, Susan S. Hubbard, Maria Green-Blum, Donald J. P. Swift, and Mary F. DeFlaun. Adsorption and N₂ Exsolution During Push-Pull Tests with Nitrate in Coastal Plain Sediments. Env. Sci. Tech. submitted.

5. 2007 Onstott, T.C., Chan, E., Polizzotto, M. and DeFlaun, M.F. Precipitation of Arsenic Under Sulfate Reducing Conditions and Subsequent Leaching Under Aerobic Conditions. Env. Sci. Tech. submitted.

6. 2007 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. American Mineralogist, in press.

7. 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. DOI: 10.1080/0149045070157241 submitted.

8. 2007 Thomas M. Gihring, Duane P. Moser, Leah E. Morgan, James K. Fredrickson, Fred J. Brockman, Thomas L. Kieft, Barbara Sherwood Lollar, Michael E. Dollhopf, David L. Balkwill, Tullis C. Onstott, Eric Boiceand Lisa M. Pratt, Genetic and Geochemical Evidence for Microbially-Mediated Sulfur and Methane Cycling in a Dolomite Aquifer 0.9 km Below the Surface. Environmental Microbiology submitted.

9. 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

10. 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.2006.12.020

11. 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

12. 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

13. 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

14. 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

15. 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. Geomicrobiol. Jour. 23:453-462. DOI: 10.1080/01490450600875787

16. 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

17. 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 Journal 23:415-430. DOI: 10.1080/01490450600875696

18. 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

19. 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 Journal 23:463-473. DOI: 10.1080/01490450600875803

20. 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 DOI:10.1089/ast.2006.6.377

21. 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.2005.09.027

22. 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

23. 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

24. 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. 71:8773-8783. DOI: 10.1128/AEM.71.12.8773-8783.2005

25. 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

26. 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.

27. 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

28. 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

29. 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.

30. 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

31. 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 of South Africa and Deep Basalt Aquifers of Washington State. Environmental Microbiology 5:267-277. DOI: 10.1046/j.1462-2920.2003.00408.x

32. 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

33. 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

34. 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

35. 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

36. 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

37. 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

38. 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

39. 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

40. 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

41. 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

42. 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

43. 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

44. 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

45. 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

46. 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.

47. 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

48. 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

49. 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. DOI: 10.1016/S0009-2541(00)00220-5

50. 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.

51. 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

52. 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.

53. 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.

54. 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.

55. 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.

56. 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.

57. 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.

58. 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.

59. 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.

60. 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.

61. 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.

62. 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.

63. 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.

64. 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.

65. 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.

66. 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.

67. 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.

68. 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.

69. 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.

70. 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.

71. 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.

72. 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.

73. 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.

74. 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.

75. 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.

76. 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.

77. 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.

78. 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.

79. 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.

80. 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.

81. 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.

82. 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.

83. 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.

84. 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.

85. 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.

86. 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.

87. 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.

88. 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.

89. 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.

90. 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.

91. 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.

92. 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.

93. 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.