Lawrence Livermore National Laboratory



Josh Wimpenny

Staff Scientist
Nuclear and Chemical Sciences Division


 +1 925-423-9263

DegreeDiscipline/InstitutionYear
M.S. Geochemistry
Open University
2009
MESci. Geology
University of Liverpool
2004

Research Interests

I have a broad range of research interests within the field of geochemistry, ranging from the investigation of water-rock interactions at the Earth's surface to the use of short-lived radioisotope systems to date the earliest formed solids in our Solar System. To address these questions I have utilized many analytical techniques including high precision stable and radiogenic isotopic analyses (e.g. Li, Mg, Ca, Sr, Hf, U-Pb), trace element characterization and in-situ analyses of geological samples by laser ablation ICP-MS.

Honours, awards and memberships

  • Editorial board: Chemical Geology (2016 onwards)
  • Awards: Herdman prize (University of Liverpool, 2002-2003)
  • Member: American Geophysical Union (AGU), Geochemical Society, Meteoritical Society

Selected Publications

Koeford, P., Amelin, Y., Yin, Q.-Z., Wimpenny, J., Sanborn, M. E., Iizuka, T., Irving, A. J., (2016) U-Pb and Al-Mg systematics of the ungrouped achondrite Northwest Africa 7325. Geochimica Et Cosmochimica Acta, 183, 31-45.

Rubin, A., Cooper, K.M., Leever, M., Wimpenny, J., Deering, C., Rooney, T., Gravley, D. Yin, Q.Z., (2016). Changes in magma storage conditions following caldera collapse at Okataina Volcanic Center, New Zealand. Contributions to Mineralogy and Petrology, 171(1), pp.1-18.

Wimpenny, J., Amelin, Y., Yin, Q. Z. (2015). The Lu Isotopic Composition of Achondrites: Closing the Case for Accelerated Decay of 176Lu. The Astrophysical Journal Letters, 812(1), L3.

Wimpenny, J., Colla, C. A., Yu, P., Yin, Q.-Z., Rustad, J. R., Casey, W. H., (2015) Lithium Isotope Fractionation During Uptake by Gibbsite. Geochimica Et Cosmochimica Acta. 168, 133-150.

Wimpenny, J., Yin, Q.-Z., Tollstrup, D., Xie, L.-W., Sun, J., (2014) Using Mg isotope ratios to trace Cenozoic weathering changes: A case study from the Chinese Loess Plateau. Chemical Geology. 376, 31-43.

Wimpenny, J., Colla, C. A., Yin, Q.-Z., Rustad, J. R., Casey, W. H., (2014) Investigating the Behaviour of Mg Isotopes during the Formation of Clay Minerals. Geochimica Et Cosmochimica Acta. 128, 178-194.

Wimpenny, J., Amelin, Y. A., Yin, Q.-Z., (2013) Precise Determination of the Lutetium Isotopic Composition in Rocks and Minerals Using Multicollector ICPMS. Analytical Chemistry. 85 (23), 11258-11264.

Popova, O. P., Jenniskens, P., Emel'yanenko, V., … Wimpenny, J., … et al. (2013) Chelyabinsk Airburst, Damage Assessment, Meteorite Recovery and Characterization. Science. 342. 1069-1073.

Colla, C. A., Wimpenny, J., Yin, Q.-Z., Rustad, J. R., Casey, W. H., (2013) Calcium-Isotope Fractionation between Solution and Solids with Six, Seven or Eight Oxygens Bound to Ca(II). Geochimica Et Cosmochimica Acta. 121, 363-373.

Shen, B., Wimpenny, J., Lee, C. T. A., Tollstrup, D., Yin, Q. Z. (2013). Magnesium isotope systematics of endoskarns: Implications for wallrock reaction in magma chambers. Chemical Geology, 356, 209-214.

Chin, E. J., Lee, C. T. A., Tollstrup, D. L., Xie, L., Wimpenny, J. B., Yin, Q. Z. (2013). On the origin of hot metasedimentary quartzites in the lower crust of continental arcs. Earth and Planetary Science Letters, 361, 120-133.

Stelten, M. E., Cooper, K. M., Vazquez, J. A., Reid, M. R., Barfod, G. H., Wimpenny, J., Yin, Q. Z. (2013). Magma mixing and the generation of isotopically juvenile silicic magma at Yellowstone caldera inferred from coupling 238U–230Th ages with trace elements and Hf and O isotopes in zircon and Pb isotopes in sanidine. Contributions to Mineralogy and Petrology, 166(2), 587-613.

Wasserburg, G. J., Wimpenny, J., Yin, Q.-Z., (2012) Mg Isotopic Heterogeneity, Al-Mg Isochrons, and Canonical 26Al/27Al in the Early Solar System. Meteoritics and Planetary Sciences. 47 (12), 1980-1997.

Jenniskens, P., Fries, M. D., Yin, Q.-Z., …Wimpenny, J., …et al. (2012) Radar-Enabled Recovery of the Sutter's Mill Meteorite, a Carbonaceous Chondrite Regolith Breccia. Science. 338, 1583-1587.

Yin, Q.-Z., Wimpenny, J., Tollstrup, D. L., Mange, M., Dewey, J. F., Zhou, Q., Li, X.-H., Wu, F.-Y., Li, Q.-L., Liu, Y., Tang. G.-Q., (2012) Provenance study of South Mayo Trough, western Ireland based on U-Pb ages and Hf-O isotopes in detrital zircons Journal of the Geological Society, v.169; p681-689

Tollstrup, D., Xie, L.-W., Wimpenny, J., Chin, E., Lee, C.-T., Yin, Q.-Z., (2012) A trio of laser ablation in concert with two ICP-MSs: Simultaneous, pulse-by-pulse determination of U-Pb discordant ages and a single spot Hf isotope ratio analysis in complex zircons from petrographic thin sections. Geochem. Geophys. Geosys. 13,3.

Wimpenny, J., James, R., Burton, K., Gannoun, A., Mokadem, F., Gíslason, S., (2011) The behaviour of magnesium and its isotopes during glacial weathering in an ancient shield terrain in West Greenland. Earth and Planetary Science Letters 304, 1-2, 260-269

Wimpenny, J., Gíslason, S., James, R.H., Gannoun, A., Pogge von Strandmann, P.A.E., Burton, K.W. (2010) The behaviour of Li and Mg isotopes during primary phase dissolution and secondary mineral formation in basalt. Geochimica et Cosmochima Acta 74, 18, 5259-5279

Wimpenny, J., James, R., Burton, K., Gannoun, A., Mokadem, F., Gíslason, S., (2010) Glacial effects on weathering processes: New insights from the elemental and lithium isotopic composition of West Greenland rivers. Earth and Planetary Science Letters 290, 3-4, 427-437

Wimpenny, J., Gannoun, A., Burton, K. W., Widdowson, M., James, R. H., Gíslason, S. R. (2007) Rhenium and osmium isotope and elemental behaviour accompanying laterite formation in the Deccan region of India. Earth and Planetary Science Letters 261, 1-2, 239-258


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