Dr Tim O R Tomkinson

PhD, MSci

  • BS8 1RJ


Research output per year

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Personal profile

Research interests

My research focuses on the extraterrestrial formation of alteration minerals within Martian meteorites. These hydrous mineral assemblages provide an opportunity to gain key insights into the past Martian fluid reservoirs (hydrosphere) and the ancient atmosphere of Mars. I build on previous investigations by employing a new radioisotopic dating program and geochemical characterization of the alteration veins. This work uses state of the art instrumentation including X-ray Computed Tomography, NanoSIMS and a high-sensitivity, high resolution multicollector noble gas mass spectrometer (HELIX-SFT) for 40Ar/39Ar dating. These studies integrate data collected using these analytical instruments and results from FIB-SEM, Raman, TEM and EPMA and new preparation techniques to provide a comprehensive investigation of Mars’ history through meteorite analyses.

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Research Output

The Nakhlites Sample Multiple Igneous Units: Evidence from 40Ar/39Ar Chronology and Geochemistry

Cohen, B. E., Mark, D. F., Lee, M. R., Cassata, W. S., Griffin, S., Smith, C. L. & Tomkinson, T., 19 Mar 2018, 49th Lunar and Planetary Science Conference: 19-23 March, 2018 held at The Woodlands, Texas. 1892. (LPI Contribution No. 2083).

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

  • Taking the pulse of Mars via dating of a plume-fed volcano

    Cohen, B. E., Mark, D. F., Cassata, W. S., Lee, M. R., Tomkinson, T. & Smith, C. L., 3 Oct 2017, In : Nature Communications. 8, 9 p., 640.

    Research output: Contribution to journalArticle (Academic Journal)

    Open Access
  • 19 Citations (Scopus)
    208 Downloads (Pure)

    Carbon sequestration on Mars

    Lee, M. R., Tomkinson, T., Mark, D. F. & Smith, C. L., 1 Jun 2016, In : Geology. 44, 6, p. e388

    Research output: Contribution to journalComment/debate (Academic Journal)