Curriculum Vitae

Education

Arizona State University Tempe, AZ, USA

Ph.D., Geological Sciences 12/2018

Thesis: Examining the Limitations of 238U/235U in Marine Carbonates as a Paleoredox Proxy

Advisor: Ariel D. Anbar

Arizona State University Tempe, AZ, USA

M.S., Chemistry 05/2015

Thesis: Uranium Isotope Fractionation During Coprecipitation with Aragonite and Calcite

Advisor: Ariel D. Anbar

China University of Geosciences Wuhan, HB, China

B.S., Environmental Engineering 06/2009

Thesis: Experimental Study of Triple Oxygen Isotope Measurements Using CoF3 Method

Advisor: Yiqun Gan


Professional Experience


Shanghai Jiao Tong University

2022 – Assistant Professor, School of Oceanography


Florida State University

2019 – 2022 Postdoctoral researcher, Department of Earth, Ocean, and Atmospheric Sciences, National High Magnetic Field Laboratory


Arizona State University

2017 – 2018 Teaching Assistant, School of Earth & Space Exploration

2012 – 2014 Teaching Assistant, School of Molecular Sciences

2015 – 2018 Graduate Research Assistant, School of Earth & Space Exploration

2012 – 2015 Graduate Research Assistant, School of Molecular Sciences

Publications (correspondence*)

  1. Mei Q-F, Chen X*, Yang J-H, Zhu Y-S, Owens D. J. Tracing recycled crustal materials in the subcontinental lithospheric mantle using thallium isotopes. Geophysical Research Letters, 49, e2022GL099959.

  2. Chen X*., Robinson S. A., Romaniello S. J. and Anbar A. D. (2022) 238U/235U in calcite is more susceptible to carbonate diagenesis. Geochimica et Cosmochimica Acta, 326, 273-287.

  3. Chen X*., Li S., Newby S. M., Lyons T. W., Wu F. and Owens J. D. (2022) Black Sea iron and managanese shuttle has no effect on sedimentary thallium and vanadium isotope signatures. Geochimica et Cosmochimica Acta, 317, 218-233.

  4. Hlohowskyi S., Chen X., Romaniello S. J., Vorlicek T., Anbar A. D., Lyons T. and Chappaz A. (2021) Quantifying molybdenum isotopic speciation in sulfidic water: Implications for the Paleoredox proxy. ACS Earth & Space Chemistry, 5, 2891-2899.

  5. Chen X*., Romaniello S. J., McCormick. M., Havig J. R., Sherry A., Zheng W. and Anbar A. D. (2021) Anoxic depositional overprinting of uranium isotopes (238U/235U) in calcite: When do carbonates tell black shale tales? Geology, 49, 1193-1197.

  6. Chen X*., Romaniello S. J. and Anbar A. D. (2021) Preliminary exploration of molybdenum isotope fractionation during coprecipitation of molybdate with abiotic and microbial calcite. Chemical Geology, 566, 120102.

  7. Chen X*. (2020) Aqueous uranium speciation on U/Ca ratios in foraminiferal calcite: The importance of the minor U species—UO2(CO3)22-. ACS Earth & Space Chemistry, 4, 2050–2060.

  8. Ostrander C., Owens J. D., Nielsen S., Lyons T. W., Shu Y., Chen X., Sperling E., Jiang G., Johnson D., Sahoo W. and Anbar A. D. D. (2020) Thallium isotope ratios in shales from South China and northwestern Canada suggest widespread O2 accumulation in marine bottom waters was an uncommon occurrence during the Ediacaran Period. Chemical Geology, 557, 119856.

  9. Zhang F., Lenton T. M., Rey A. D., Romaniello S. J., Chen X., Planavsky N. J., Clarkson M. O., Dahl T. W., Lau K. V., Wang W., Li Z., Zhao M., Isson T., Algeo T. J. and Anbar A. D. (2020) Uranium isotopes in marine carbonates as a global ocean paleoredox proxy: A critical review. Geochimica et Cosmochimica Acta, 287, 27–49.

  10. Chen X*., Zheng W. and Anbar D. A. (2020) Uranium isotope fractionation during U(VI) uptake by freshwater plankton. Envrionmental Science & Technology, 54, 2744–2752.

  11. Chen X*., Romaniello S. J., Herrmann A. D., Samankassou E. and Anbar A. D. (2018) Biological effects on uranium isotope fractionation (238U/235U) in primary biogenic carbonates. Geochimica et Cosmochimica Acta, 240, 1–10.

  12. Chen X*., Romaniello S. J., Herrmann A. D., Hardisty D., Gill B. C. and Anbar A. D. (2018) Diagenetic effects on uranium isotope fractionation in carbonate sediments from the Bahamas. Geochimica et Cosmochimica Acta, 237, 294–311.

  13. Chen X*., Romaniello S. J. and Anbar A. D. (2017) Uranium isotope fractionation induced by aqueous speciation: Implications for U isotopes in marine CaCO3 as a paleoredox proxy. Geochimica et Cosmochimica Acta, 215, 162–172.

  14. Chen X*., Romaniello S. J., Herrmann A. D., Wasylenki L. E. and Anbar A. D. (2016) Uranium isotope fractionation during coprecipitation with aragonite and calcite. Geochimica et Cosmochimica Acta, 188, 189–207.

  15. Chen L., Ma T., Du Y., Xiao C., Chen X., Liu C. and Wang Y. (2016) Hydrochemical and isotopic constraints on evolution of geothermal water in coastal plain of Southwestern Guangdong Province, China. Journal of Volcanology and Geothermal Research, 318, 45–54.

First-author Conference Presentations

  1. Chen X., Li S., Newby S. M., Lyons T. W. and Owens J. D. (2020) The effects of iron and manganese shuttles on thallium and vanadium isotopes in Black Sea sediments. Goldschmidt Conference, Virtual. (oral).

  2. Chen X., Wu F., Li S., Sperling E. A., Kendall B., Dahl T. W. and Owen J. D. (2019) Tracking subtle variations of Neoproterozoic oceanic oxygenation using vanadium isotopes: Implications for early animals. Geological Society of America, Phoenixc, AZ, USA. (oral).

  3. Chen X., Romaniello S. J., McCormick M. L., Sherry A., Havig J., Zheng W. and Anbar A. D. (2018) Uranium isotope fractionation across the chemocline of meromictic Fayetteville Green Lake, New York, USA. Uranium-Biogeo, Monte Verita Ascona, Switzerland. (oral).

  4. Chen X., Romaniello S. J., Zheng W., McCormick M. L., Sherry A., Havig J. and Anbar A. D. (2018) Abnormal Molybdenum isotope fractionation across the chemocline of Fayetteville Green Lake, New York, USA. Goldschmidt Conference, Boston, MA, USA. (poster).

  5. Chen X., Romaniello S. J., Herrmann A. D. and Anbar A. D. (2017). Uranium isotope fractionation in biogenic carbonates: Biological effects. AGU Fall Meeting, New Orleans, LA, USA. (poster).

  6. Chen X., Sherry A., Romaniello S. J., Havig J., McCormick M. and Anbar A. D. (2017) Exploring Molybdenum and Uranium isotope fractionation across the chemocline of Fayetteville Green Lake, New York. AbSciCon, Mesa, AZ, USA. (poster).

  7. Chen X., Romaniello S. J., Herrmann A. D. and Anbar A. D. (2016) Diagenetic effects on U isotope fractionation in carbonate sediments from the Bahamas. AGU Fall Meeting, San Francisco, CA, USA. (poster).

  8. Chen X., Romaniello S. J., Herrmann A. D., Wasylenki L. E. and Anbar A. D. (2015) Uranium isotopes in calcium carbonate: A possible proxy for paleo-pH and carbonate ion concentration. AGU Fall Meeting, San Francisco, CA, USA. (poster).

  9. Chen X., Romaniello S. J., Herrmann A. D., Wasylenki L. E. and Anbar A. D. (2014) Uranium isotope fractionation during incorporation into aragonite and calcite. 24th V. M. Goldschmidt Conference, Sacramento, CA, USA. (oral).

Service to Profession

2019 – Reviewer for proposals:

NASA FINESST program

NSF Petrology and Geochemistry program

American Chemical Society Petroleum Research Fund

2016 – Reviewer for journals:

Nature Communication; Environmental Science & Technology; Geology; Earth Planetary Science Letters; Geochimica et Cosmochimica Acta; Analytical Chemistry; Geophysical Research Letters; Global Biogeochemical Cycles; Chemical Geology; Frontiers in Earth Science; Applied Geochemistry

Related Professional Skills

2021 – Extraction of carbonate-associated sulfate (CAS); Iron speciation analysis

2012 – Geochemical modeling: PHREEQC

2012 – Basic programming: MATLAB, R, Python

2012 – Thermo Neptune MC-ICP-MS for U, Mo, Tl, and V isotope analysis

2012 – Thermo ICAP-Q ICP-MS for major and trace elements analysis

2012 – Ion exchange chromatography for the purification of U, Mo, Tl, and V

2012 – Experience in Class 1000 geochemical clean rooms

2015 – 2017 Microbiological culture (bacteria and fungus)

Field Work Experience

2015, 2017 Water, sediments and sinking particles collection in Fayetteville Green Lake, New York, USA

2009 Groundwater sampling sulfate and nitrate, North China

2008 Hydrogeology Practice, Three Gorges, China

2007 Ecological Geology Practice, South China

2006 Field Geology Practice, North China

Selected Press and Media Coverage

2018 "Finding a passion topic was key for geological sciences PhD grad"

https://news.asu.edu/20181130-2018-graduation-highlights-xinming-chen