Gwyneth Gordon

School of Earth & Space Exploration
PS-F 234
Assistant Research Professor
TEMPE Campus
Assistant Research Professor
TEMPE Campus
Assistant Research Professor
TEMPE Campus

Google Scholar


  1. Lu, X., Kendall, B., Stein, H.J., Li, C., Hannah, J.L., Gordon, G.W. and Obestad, J.O. (in press) Marine redox conditions during deposition of Late Ordovician and Early Silurian organic-rich mudrocks in the Siljan ring district, central Sweden. Chem. Geol.
  2. Wolfe, A., Stewart, B., Capo, R., Liu, R., Dzombak, D.A., Gordon, G.W. and Anbar, A.D. (2016) Iron isotope investigation of hydrothermal and sedimentary pyrite and their aqueous dissolution products. Chem. Geol. 427: 73-82, doi: 10.1016/j.chemgeo.2016.02.015.
  3. Romaniello, S.J., Field, M.P., Smith, H.B., Gordon, G.W., Kim, M.H. and Anbar, A.D. (2015) Fully automated chromatographic purification of Sr and Ca for isotopic analysis. JAAS 30(9): 1906-1912; doi: 10.1039/c5ja00205b.
  4. Azmy, K, Kendall, B., Brand, U., Stouge, S. and Gordon, G.W. (2015) Redox conditions across the Cambrian-Ordovician boundary: Elemental and isotopic signatures retained in the GSSP carbonates. Palaeogeo. Palaeoclimat. Palaeoecol. 440: 440-454, doi: 10.1016/j.palaeo.2015.09.014
  5. Goto, K., Shimoda, G., Anbar, A.D., Gordon, G.W., Harigane, Y., Senda, R., Suzuki, K. (2015) Molybdenum isotopes in hydrothermal manganese crust from the Ryukyu arc system: Implications for the source of molybdenum. Marine Geol. 269: 91-99, doi: 10.1016/j.margeo.2015.08.007
  6. Channon, M.B., Gordon, G.W., Morgan, J.L. Skulan, J.L., Smith, S.M. and Anbar, A.D. (2015) Using natural stable calcium isotopes in human blood to detect and monitor changes in bone mineral balance. Bone 77: 69-74; doi: 10.1016/j.bone.2015.04.023
  7. Kendall, B., Komiya, T., Lyons, T.W., Bates, S.M., Gordon, G.W., Romaniello, S., Jiang, G., Creaser, R.A., Xiao, S., McFadden, K., Sawaki, Y., Tahata, M., Shu, D., Han, J., Li, Y., Chu, X. and Anbar, A.D. (2015) Uranium and molybdenum isotope evidence for an episode of widespread ocean oxygenation during the late Ediacaran Period. Geochim. Cosmochim. Acta 156: 173-193, doi: 10.1016/j.gca.2015.02.025.
  8. Westerhoff, P., Lee, S., Gordon, G.W., Hristovski, K., Halden, R.U. and Herckes, P. (2015) Characterization, Recovery Opportunities, and Valuation of Metals in Municipal Sludges from U.S. Wastewater Treatment Plants Nationwide. Environ. Sci. Tech. doi: 10.1021/es505329q
  9. Goto, K.T., Anbar, A.D., Gordon, G., Romaniello, S.R., Shimoda, G., Takaya, Y., Tokumaru, A., Nozaki, T., Suzuki, K., Machida, S., Hanyu, T. and Usui, A. (2014) Uranium isotope systematics of ferromanganese crusts in the Pacific Ocean: Implications for the marine 238U/235U isotope system. Geochim. Cosmochim. Acta 146: 43-58, doi: 10.1016/j.gca.2014.10.003.
  10. Gordon, G., Monga, J., Channon, M.B., Wu, Q., Skulan, J.L., Anbar, A.D. and Fonseca, R. (2014) Predicting multiple myeloma disease activity by analyzing natural calcium isotopic composition. Leukemia doi: 10.1038/leu.2014.193.
  11. Nägler, T.F., Anbar, A.D., Archer, C., Goldberg, T., Gordon, G.W., Greber, N.D., Siebert, C., Sohrin, Y. and Vance, D. (2014) Proposal for an international molybdenum isotope measurement standard and data representation. Geostand. Geoanalyt. Resrch 38(2): 149-151, doi: 10.1111/j.1751-908x.2013.00275.x
  12. Goldberg, T., Gordon, G., Izon, G., Archer, C., Pearce, C.R., McManus, J., Anbar, A.D. and Rehkamper, M. (2013) Resolution of inter-laboratory discrepancies in Mo isotope data: An intercalibration. J. Anal. At. Spectrom. 10.1039/C3JA30375F
  13. Chappaz, A., Lyons, T.W., Gordon, G. and A. D. Anbar (2012). Isotopic fingerprints of anthropogenic molybdenum in lake sediments. Env. Sci. Tech. 46: 10934–10940.
  14. Herrmann, A.D., Kendall, B., Algeo, T.J., Gordon, G.W., Wasylenki, L.E. and A. D. Anbar (2012). Anomalous molybdenum isotope trends in Upper Pennsylvanian euxinic facies: Significance for use of d98Mo as a global marine redox proxy. Chem. Geol. 324-325: 87-98.
  15. Morgan, J.L.L., Skulan, J.L., Gordon, G.W., Romaniello, S.J., Smith S.M. and A. D. Anbar (2012). Rapidly assessing changes in bone mineral balance using natural stable calcium isotopes. Proc. Nat. Acad. Sci. 109: 9989-9994.
  16. Owens, J.D., Lyons, T.W., Li, X., Macleod, K.G., Gordon, G., Kuypers, M.M., Anbar, A., Kuhnt W. and S. Severmann. (2012). Iron isotope and trace metal records of iron cycling in the proto-North Atlantic during the Cenomanian-Turonian oceanic anoxic event (OAE-2). Paleoceanography 27, PA3223, 13 pp.
  17. Dahl, T.W., Canfield, D.E., Rosing, M.T., Frei, R., Gordon, G.W., Knoll, A.H. and A. D. Anbar (2011). Molybdenum evidence for expansive sulfidic water masses in ~750 Ma oceans. Earth Planet. Sci. Lett. 311: 264-274.
  18. Morgan, J.L., Gordon, G.W., Arrua, C., Skulan, J., Bullen T.D. and A. D. Anbar (2011). High precision measurement of variations in calcium isotope ratios in urine by multiple collector inductively coupled plasma mass spectrometry (MC-ICP-MS). Anal. Chem. 83: 6956-6962.
  19. Gordon, G.W. (2011) Comments on “Application of laser ablation multicollector inductively coupled plasma mass spectrometry for the measurement of calcium and lead isotope ratios in packaging for discriminatory purposes” Rapid Comm. In Mass Spectr. 25, 3196-3198, doi: 10.1002/rcm.5195
  20. Kendall, B., Gordon, G.W., Poulton, S.W. and Anbar, A.D. (2011) Molybdenum Isotope Constraints on the Extent of Late Paleoproterozoic Ocean Euxinia. Earth Planet. Sci. Lett. 307:450-460.
  21. F. Wolfe-Simon, J. Switzer Blum, T. R. Kulp, G. W. Gordon, S. E. Hoeft, J. Pett-Ridge, J. F. Stolz, S. M. Webb, P. K. Weber, P. C. W. Davies, A. D. Anbar and R. S. Oremland (2011). A bacterium that can grow by using arsenic instead of phosphorus. Science 332: 1163 – 1166.
  22. F. Wolfe-Simon, J. Switzer Blum, T. R. Kulp, G. W. Gordon, S. E. Hoeft, J. Pett-Ridge, J. F. Stolz, S. M. Webb, P. K. Weber, P. C. W. Davies, A. D. Anbar and R. S. Oremland (2011). Response to Comments on “A bacterium that can grow by using arsenic instead of phosphorus”. Science DOI: 10.1126/science.1202098
  23. Duval, B.D., Dijkstra, P., Natali, S.M., Megonigal, J.P., Ketterer, M.E., Drake, B.G., Lerdau, M.T., Gordon, G.W., Anbar, A.D., Hungate, B.A. (2011) Plant-Soil Distribution of Potentially Toxic Elements in Response to Elevated Atmospheric CO2 Environ. Sci. Tech., doi:10.1021/es102250u
  24. Bonilla, M.D.-Z., Prevedorou, E.A., Buikstra, J., Knudson, K. J., Gordon, G.W. and Anbar., A.D. (2011) Movilidad y paleodieta en la comunidad argárica de Gatas: análisis de 87Sr/86Sr, d18O y d13C (translated title: Mobility and paleodiet in the agricultural community of Gatas: analysis of 87Sr/86Sr, d18O and d13C) Memorial Luis Siret 1: Congreso de Prehistoria de Andalucía, 603-606
  25. Dahl, T.W., Hammarlund, E., Anbar, A.D., Bond, D., Gill, B.C., Gordon, G.W., Knoll A., Nielsen A.T., Schovsbo N., Canfield, D.E. (2011) Reply to Butterfield: Devonian rise in atmospheric oxygen correlated to the radiations of terrestrial plants and large predatory fish. Proc. Nat. Acad. Sci. 108: E29; doi: 10.1073/pnas.1018818108.
  26. Dahl, T.W., Hammarlund, E., Anbar, A.D., Bond, D., Gill, B.C., Gordon, G.W., Knoll A., Nielsen A.T., Schovsbo N., Canfield, D.E. (2010) Devonian rise in atmospheric oxygen correlated to the radiations of terrestrial plants and large predatory fish Proc. Natl. Acad. Sci.,
  27. Duan, Y., Anbar, A.D., Arnold, G.L., Lyons, T.W., Gordon, G.W. and Kendall, B. (2010) Molybdenum Isotope Evidence for Mild Biospheric Oxygenation before the Great Oxidation Event Geochim. Cosmochim. Acta 74: 6655-6668; doi: 10.1016/j.epsl.2009.11.052
  28. Y. Duan, S. Severmann, A.D. Anbar, T.W. Lyons, G.W. Gordon and B. Sageman (2010) Isotopic evidence for Fe cycling and repartitioning in ancient oxygen-deficient settings: Examples from black shales of the mid-to-late Devonian Appalachian basin Earth Planet Sci. Lett. 290: 244-253
  29. Knudson, K.J., Williams, H.M., Buikstra, J.E., Tomczak, P.D., Gordon, G.W., Anbar, A.D. (2010) Introducing d88/86Sr analysis in archaeology: a demonstration of the utility of strontium isotope fractionation in paleodietary studies J. of Arch. Sci., 37, 2352-2364, doi:10.1016/j.jas.2010.04.009
  30. Dahl, T.W., A.D. Anbar, G.W. Gordon, M.T. Rosing, R.E. Frei and D.E. Canfield (2010) The behavior of molybdenum and its isotopes across the chemocline and in the sediments of sulfidic Lake Cadagno, Switzerland. Geochim. Cosmochim. Acta 74:144-163, doi: 10.1016/j.gca.2009.09.018
  31. Gordon, G.W., Rockman, M., Turekian, K.K. and Over, J. (2009) Osmium isotopic evidence against an impact at the Frasnian-Famennian boundary American J. of Science 309, 420-430, DOI: 10.2475/05.2009.03
  32. Gordon, G.W., Lyons, T.W., Arnold, G.L., Roe, J., Sageman, B.B. and Anbar, A.D. (2009) When Do Black Shales Tell Molybdenum Isotope Tales? Geology 37(6), 535-538, DOI: 10.1130/G25186A.1
  33. Ryb, U., Erel, Y, Matthews, A., Avni, Y., Gordon, G.W. and Anbar, A.D. (2009) Large molybdenum isotope variations trace subsurface fluid migration along the Dead Sea transform Geology 37(5), 463-466, DOI: 10.1130/G25331A.1
  34. Beraldi-Campesi, H., Hartnett, H., Anbar, A., Gordon, G.W. and Garcia-Pichel, F. (2009) Effect of biological soil crusts on soil elemental concentrations: implications for biogeochemistry and as traceable biosignatures of ancient life on land Geobiology 7, 348-359, DOI: 10.1111/j.1472-4669.2009.00204.x
  35. Kendall, B., Creaser, R., Gordon, G.W. and Anbar, A.D. (2009) Re-Os and Mo Isotope Systematics of black shales from the Middle Proterozoic Velkerri and Wollogorang Formations, McArthur Basin, northern Australia Geochim. Cosmochim. Acta 73, 2534-2558, DOI: 10.1016/j.gca.2009.02.01
  36. Severmann, S. Lyons, T.W., Anbar, A., McManus, J. and Gordon, G. (2008) Modern iron isotope perspective on the benthic iron shuttle and the redox evolution of ancient oceans Geology 36(6), 487-490, DOI: 10.1130/G24670A.1
  37. Anbar, A.D. and Gordon, G.W. (2008) Redox Renaissance Geology 36(3), 271-272, DOI: 10.1130/focus032008.1
  38. Weyer, S., Anbar, A.D., Gerdes, A., Gordon, G.W., Algeo, T.J. and Boyle, E.A. (2008) Natural fractionation of 238U/235U. Earth Planet. Sci. Lett. 72: 345-359.
  39. Jones, A.K., Lichtenstein, B.R., Dutta, A., Gordon, G. and Dutton, P.L. (2007) Synthetic Hydrogenases: Incorporation of an Iron Carbonyl Thiolate into a Designed Peptide J. Am. Chem. Soc. 129, 14844-14845, DOI: 10.1021/ja075116a
  40. Anbar, A.D….Gordon (2007) A Whiff of Oxygen Before the Great Oxidation Event? Science 317: 1903-1906 DOI: 10.1126/science.1140325
  41. Wasylenki, L.E., Anbar, A.D., Liermann, L.J., Mathur, R., Gordon, G. and Brantley, S. (2007) Isotope fractionation during microbial metal uptake using MC-ICP-MS, J. Anal. At. Spec. 22(8), 905-910, DOI: 10.1039/b705476a
  42. Turekian, K.K., Sharma, M. and Gordon, G.W. (2007) The behavior of natural and anthropogenic osmium in the Hudson River-Long Island Sound estuarine system Geochim. Cosmochim. Acta 71, 4135-4140, DOI: 10.1016/j.gca.2007.05.020
  43. Carrigan, P.E., Hentz, J.G., Williams, G. Morgan, J.L., Raimondo, M., Anbar, A. and Miller, L.J. (2007) Distinctive heavy metal composition of pancreatic juice in patients with pancreatic carcinoma, Cancer Epidemiology Biomarkers & Prevention 16(12), 2656-2663
  44. Williams, G.A. and Turekian, K.K. (2004) The glacial-interglacial variation in seawater Os isotopes as recorded in Santa Barbara Basin sediments, Earth Planet. Sci. Lett. 228, 379-389
  45. Krishnaswami, S., Williams, G.A., Graustein, W.C. and Turekian, K.K. (2004) The effect of weathering regime on uranium decay series and osmium in two soil profiles, Geochem. J. 38, 651-660
  46. Williams, G. and Turekian, K.K. (2002) The atmospheric supply of osmium to the oceans. Geochim. Cosmochim. Acta 66, 3789-3791
  47. Williams, G., Marcantonio, F. and Turekian, K.K. (1997) The behavior of natural and anthropogenic osmium in Long Island Sound, an urban estuary in the eastern U.S. Earth Planet. Sci. Lett. 148, 341-347

Research Activity



Patent 20140273248 – Application of Ca isotope analysis to the early detection of metastatic cancer (with J. Skulan, A.D. Anbar and R. Fonseca)

Patent 20130115650 – Isotopic biomarkers for rapid assessment of bone mineral balance in biomedical applications (with J. Skulan, A.D. Anbar and J. Morgan)


Spring 2020
Course NumberCourse Title
SES 792Research
SES 799Dissertation


Fulbright Scholar: 

I developed and co-led a course entitled Isotopes in Forensics and Food Authentication at the University of C�rdoba, Argentina in Fall 2011. 

Professional Associations

Geochemical Society, American Geophysical Union, International Association for Identification, American Association of Forensic Scientists (pending)

Pro Bono

Volunteer Crime Scene Specialist, Mesa Police Department 2/2010 - current