Earth Sciences Division (ESD) Department of Energy (DOE) Lawrence Berkeley National Laboratory (LBNL)

Mark Conrad's Publications

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Journal Articles

  1. Liu, F., R.C. Bales, M.H. Conklin, and M.E. Conrad, 2008, Stream flow generation from snowmelt in semi-arid, seasonally snow-covered, forested catchments, Valles Caldera, New Mexico: Water Resources Res., doi:10.1029/2007WR006728.
  2. Faybishenko, B., T.C. Hazen, P.E. Long, E.L. Brodie, M.E. Conrad, S.S. Hubbard, J.N. Christensen, D. Joyner, S.E. Borglin, R. Chakraborty, K.H. Williams, J.E. Petersen, J. Chen, S.T. Brown, T.K. Tokunaga, J. Wan, M. Firestone, D.R. Newcomer, C.T. Resch, K.J. Cantrell, A. Willett, and S. Koenigsberg, 2008, In Situ Long-Term Reductive Bioimmobilization of Cr(VI) in Groundwater Using Hydrogen Release Compound: Environ. Sci. Technol. 42, 8478-8485.
  3. Druhan, J.L., M.E. Conrad, K.H. Williams, L. N’Guessan, P.E. Long, and S.S. Hubbard, 2008, Sulfur Isotopes as Indicators of Amended Bacterial Sulfate Reduction Processes Influencing Field Scale Uranium Bioremediation: Environ. Sci. Technol. 42, 7842-7849.
  4. Hubbard, S.S., K. Williams, M.E. Conrad, B. Faybishenko, J. Peterson, J.S. Chen, P. Long, and T. Hazen, 2008, Field-scale geophysical monitoring of biogeochemical transformations associated with Cr(VI) bioremediation: Environ. Sci. Technol. 42, 3757-3765.
  5. Conrad, M.E., D.J. DePaolo, K. Maher, G.W. Gee, and A.L. Ward, 2007, Field evidence for strong chemical separation of contaminants in the Hanford vadose zone: Vadose Zone J. 6, 1031-1041.
  6. Christensen, J.N., Conrad, M.E., D.J. DePaolo, and P. E. Dresel, 2007, Isotopic Studies of Contaminant Transport at the Hanford Site, WA: Vadose Zone J. 6, 1018-1030.
  7. Lee, P.K.H., M.E. Conrad, and L. Alvarez-Cohen, 2007, Stable carbon isotope fractionation of chloroethenes by dehalorespiring isolates: Environ. Sci. Technol. 41, 4277-4285.
  8. Menchaca, L.B., B. M. Smith, J. Connolly, M. Conrad, and B. Emmett, 2006, A method to determine plant water source using transpired water: Hydrol. Earth Syst. Sci. Discuss. 4, 863–880.
  9. Machavaram, M.V., D.O. Whittemore, M.E. Conrad, and N.L. Miller, 2006, Precipitation induced stream flow: An event based chemical and isotopic study of a small stream in the Great Plains region of the USA: J. Hydrology 330, 470-480.
  10. Singleton, M.J., K. Maher, D.J. DePaolo, M.E. Conrad, and P.E. Dresel, 2006, Dissolution rates and vadose zone drainage from strontium isotope measurements of groundwater in the Pasco Basin, WA unconfined aquifer: J. Hydrology 321, 39-58.
  11. Templeton, A.S., K.-H. Chu, L. Alvarez-Cohen and M.E. Conrad, 2006, Variable carbon isotope fractionation expressed by aerobic CH4-oxidizing bacteria: Geochim. et Cosmochim. Acta 70, 1739-1752.
  12. Teh, Y.A., W.L. Silver, M.E. Conrad, S.E. Borglin, and C.M. Carlson, 2006, Carbon isotope fractionation by methane-oxidizing bacteria in tropical rain forest soils: J. Geophys. Res. 111, G02001, doi:10.1029/2005JG000053.
  13. Solomon, C.T., P.K. Weber, J.J. Cech, Jr., B.L. Ingram, M.E. Conrad, M.V. Machavaram, A.R. Pogodina, and R.L. Franklin, 2006, Experimental determination of the sources of otolith carbon and associated isotopic fractionation: Can. J. Fish. Aquat. Sci. 63, 79–89.
  14. Sonnenthal E., A. Ito, N. Spycher, M. Yui, J. Apps, Y. Sugita, M. Conrad, and S. Kawakami, 2005, Approaches to modeling coupled thermal, hydrological, and chemical processes in the Drift Scale Heater Test at Yucca Mountain: International J. Rock Mech. and Mining Sci. 42, 698-719.
  15. Teh, Y.A., W.L. Silver, and M.E. Conrad, 2005, Oxygen Effects on CH4 Production and Oxidation in Humid Tropical Forest Soils: Global Change Biology 11, 1283-1297.
  16. Singleton, M.J., K.N. Woods, M.E. Conrad, D.J. DePaolo, and P. E. Dresel, 2005, Tracking sources of unsaturated zone and groundwater nitrate contamination using nitrogen and oxygen stable isotopes at the Hanford Site, WA: Environ. Sci. Technol. 39, 3563-3570.
  17. Miller, N.L., A.W. King, M.A. Miller, E.P. Springer, M.L. Wesely, K.E. Bashford, M.E. Conrad, K. Costigan, P.N. Foster, H.K. Gibbs, J. Jin, J. Klazura, B.M. Lesht, M.V. Machavaram, F. Pan, J. Song, D. Troyan, and R.A. Washington-Allen, 2005, The DOE water cycle pilot study: Bull. Am. Meteorol. Soc. 86, 359-374.
  18. Singleton, M.J., E.L. Sonnenthal, M.E. Conrad, D.J. DePaolo, and G.W. Gee, 2004, Multiphase reactive transport modeling of seasonal infiltration events and stable isotope fractionation in unsaturated zone pore water and vapor at the Hanford Site: Vadose Zone J. 3, 775-785.
  19. Christensen, J.N., P.E. Dresel, M.E. Conrad, K. Maher, and D.J. DePaolo, 2004, Identifying the sources of subsurface contamination at the Hanford site in Washington using high-precision uranium isotopic measurements: Environ. Sci. Technol. 38, 3330-3337.
  20. Chu, K.-H., S. Mahendra, D.L. Song, M. E. Conrad, and L. Alvarez-Cohen, 2004, Stable carbon isotope fractionation during aerobic biodegradation of chlorinated ethenes: Environ. Sci. Technol. 38, 3126-3130.
  21. Bill, M., M.E. Conrad, and A.H. Goldstein, 2004, Stable carbon isotopic composition of atmospheric methyl bromide: Geophys. Res. Lett. 31, L04109, DOI:10.129/203GL018639.
  22. DePaolo, D.J., M.E. Conrad, K. Maher, and G.W. Gee, 2004, Evaporation Effects on Oxygen and Hydrogen Isotopes in Deep Vadose Zone Pore Fluids at Hanford, Washington: Vadose Zone J. 3, 220-232.
  23. Conrad, M.E., and D.J. DePaolo, 2004, Carbon isotopic evidence for biodegradation of organic contaminants in the shallow vadose zone of the Radioactive Waste Management Complex: Vadose Zone J. 3, 143-152.
  24. Torn, M.S., S. Davis, J.A. Bird, M.R. Shaw, and M.E Conrad, 2003, Automated analysis of 13C/12C ratios in CO2 and dissolved inorganic carbon for ecological and environmental applications: Rapid Comm. in Mass Spectrometry 17, 2675-2682.
  25. Maher, K., D.J. DePaolo, M.E. Conrad, and R.J. Serne, 2003, Vadose zone infiltration rate at Hanford, Washington, inferred from Sr isotope measurements: Water Resources Res. 39, 1204 DOI: 10.1029/202WR001742.
  26. Bhupathiraju, V.K., P. Krauter, H.-Y.N. Holman, M.E. Conrad, P.F. Daley, A.S. Templeton, J.R. Hunt, M. Hernandez, and L. Alvarez-Cohen, 2002, Assessment of in-situ bioremediation at a refinery waste-contaminated site and an aviation gasoline contaminated site: Biodegradation 13, 79-90.
  27. Song, D.L., M.E. Conrad, K.S. Sorenson, and L. Alvarez-Cohen, 2002, Stable carbon isotope fractionation during enhanced in-situ bioremediation of trichloroethene: Environ. Sci. Technol. 36, 2262-2268.
  28. Byrne, R., B.L. Ingram, S. Starratt, F. Malamud-Roam, J.N. Collins, and M.E. Conrad, 2001, Carbon-isotope, diatom, and pollen evidence for Late Holocene salinity change in a brackish marsh in the San Francisco Estuary: Quat. Res. 55, 66-76.
  29. Geller, J.T., H.-Y. Holman, G. Su, T-S. Liou, M.E. Conrad, K. Pruess, and J.C. Hunter-Cevera, 2000, Flow dynamics and potential for biodegradation of organic contaminants in fractured rock vadose zone: J. Contaminant Hydrology 33, 63-90.
  30. Conrad, M.E., A.S. Templeton, P.F. Daley, and L. Alvarez-Cohen, 1999, Seasonally-induced fluctuations in microbial production and consumption of methane during bioremediation of aged subsurface refinery contamination: Environ. Sci. Technol. 33, 4061-4068.
  31. Conrad, M.E., A.S. Templeton, P.F. Daley, and L. Alvarez-Cohen, 1999, Isotopic evidence for biological controls on migration of petroleum hydrocarbons: Org. Geochem. 30, 843-859.
  32. Compton, J.S., M.E. Conrad, and T.W. Vennemann, 1999, Stable isotope evolution of volcanic ash layers during diagenesis of the Miocene Monterey Formation, California: Clays and Clay Min. 47, 84-95.
  33. Ingram, B.L., P. De Deckker, A.R. Chivas, M.E. Conrad, and A.R. Byrne, 1998, Stable isotopes, Sr/Ca, and Mg/Ca in biogenic carbonates from Petaluma Marsh, northern California, USA: Geochim. et Cosmochim. Acta 62, 3229-3237.
  34. Ryan, P.C., M.E. Conrad, K. Brown, C.P. Chamberlain, and R.E. Reynolds, 1998, Oxygen isotope compositions of mixed-layer serpentine and illite/smectite in the Tuscaloosa formation (U.S. Gulf Coast): Implications for pore fluids and mineralogic reactions: Clays and Clay Min. 46, 357-368.
  35. Anderson, S.P., W.E. Dietrich, D.R. Montgomery, R. Torres, M.E. Conrad, and K. Loague, 1997, Subsurface flow paths in a steep unchanneled catchment: Water Resources Res. 33, 2637-2653.
  36. Conrad, M.E., D.M Thomas, S. Flexser, and T.W. Vennemann, 1997, Fluid flow and water-rock interaction in the East Rift Zone of Kilauea Volcano, Hawaii: J. Geophys. Res. 102, 15021-15037.
  37. Conrad, M.E., P.F. Daley, M.F. Fischer, B.B. Buchanan, T. Leighton, and M. Kashgarian, 1997, Combined 14C and d13C monitoring of in situ biodegradation of petroleum hydrocarbons: Environ. Sci. Technol. 31, 1463-1469.
  38. Ingram, B.L., J.C. Ingle, and M.E. Conrad, 1996, Stable isotope record of late Holocene salinity and river discharge in San Francisco Bay, California: Earth and Plan. Sci. Lett. 141, 237-247.
  39. Ingram, B.L., J.C. Ingle, and M.E. Conrad, 1996, A 2000 yr record of Sacramento-San Joaquin river inflow to San Francisco Bay estuary, California: Geology 24, 331-334.
  40. Thomas, D.M., F.L. Paillet, and M.E. Conrad, 1996, Hydrogeology of the HSDP borehole KP-1, Part II: Ground-Water geochemistry and regional flow patterns: J. Geophys. Res. 101, 11683-11694.
  41. Ingram, B.L., M.E. Conrad, and J.C. Ingle, 1996, Stable isotope and salinity systematics in estuarine waters: San Francisco Bay: Geochim. et Cosmochim. Acta 60, 455-467.
  42. Conrad, M.E., J.R. O'Neil, and U. Petersen, 1995, The relation between widespread 18O-depletion patterns and precious metal mineralization in the Tayoltita mine of Durango, Mexico: Econ. Geol. 90, 322-342.
  43. Macfarlane, A.W., R. Prol-Ledesma, and M.E. Conrad, 1994, Isotope and fluid inclusion studies of the geological and hydrothermal evolution of the Hualgayoc district, northern Peru: International Geology Review 36, 645-677.
  44. Chamberlain, C.P., and M.E. Conrad, 1993, Oxygen-isotope zoning in garnet: A record of volatile transport: Geochim. et Cosmochim. Acta 57, 2613-2630.
  45. Conrad, M.E., and C.P. Chamberlain, 1992, Laser-based, in situ measurements of fine-scale variations in the d18O values of hydrothermal quartz: Geology 20, 812-816.
  46. Conrad, M.E., U. Petersen, and J.R. O'Neil, 1992, Evolution of an Au-Ag producing hydrothermal system: The Tayoltita mine, Durango, Mexico: Econ. Geol. 87, 1451-1474.
  47. Chamberlain, C.P., and M.E. Conrad, 1991, Oxygen isotope zoning in garnet: Science 254,403-406.
  48. Chamberlain, C.P., and M.E. Conrad, 1991, The relative permeabilities of quartzites and schists at mid-crustal levels: Geophys. Res. Lett. 18, 959-962.
  49. Conrad, M.E., and H.R. Naslund, 1989, Modally-graded rhythmic layering in the Skaergaard intrusion: J. Petrology. 30, 251-269.

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Book Chapters

  1. Sonnenthal, E.L., N.F. Spycher, M. Conrad, and J. Apps, 2004. A conceptual and numerical model for thermal-hydrological –chemical processes in the Yucca Mountain Drift Scale Test. In: Stephansson, O., J.A. Hudson, and L. Jing, ed., Coupled Thermo-Hydro-Mechanical-Chemical Processes in Geo-Systems, Fundamentals, Modelling, Experiments and Applications. Elsevier Geo-Engineering Book Series, volume 2, p. 347-352.
  2. Conrad, M.E., and B. Faybishenko, 2000, Isotopic tracers of flow and transport through the vadose zone: In eds., Looney, B., and R. Falta, Vadose Zone Technology and Science Solutions, Batelle Press, Columbus, OH, 298-303.


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