doi:10.1130/G23381A.1. *Mervine, E.M., K.W.W. Sims, S.E. Humphris, and P.B. Kelemen (2015). "The applications and limitations of U-Th disequilbria systematics for determining rates of peridotite carbonation in the Samail Ophiolite, Sultanate of Oman." Chemical Geology, 412, 151-166, .org/10.1016/j.chemgeo.2015.07.023 *Arendt, C.A. S. M. Aciego, K.W.W. Sims, and S. M. Aarons (2017) Seasonal Progression of Uranium Series Isotopes in Subglacial Meltwater: Implications for Subglacial Storage Time. Chemical Geology, 467, 42-52, https://doi.org/10.1016/j.chemgeo.2017.07.007. *Scott, S.R., K. W.W. Sims, B. R. Frost, P. B. Kelemen ,K. A. Evans, and S. Swapp (2017) On the hydration of olivine in ultramafic rocks: Implications from Fe isotopes in serpentinites” (Geochemica Cosmochimica Acta, 215, 105-215, https://doi.org/10.1016/j.gca.2017.07.011 Core formation and planetary differentiation Newsom, H.E. and K.W.W. Sims (1991). “Core formation during early accretion of the Earth.” Science, 252, 926-933. doi: 10.1126/science.252.5008.926. Sims, K.W.W., H.E. Newsom, and E.S. Gladney (1990). “Chemical fractionation during formation of the Earth’s core and continental crust: Clues from As, Sb, W and Mo.” In Origin of the Earth, J. Jones and H.E. Newsom (eds.), New York: Oxford University Press; Houston. Lunar and Planetary Institute. . Newsom, H.E., K.W.W. Sims, P.D. Noll, W.L. Jaeger, S.A. Maehr, and T.B. Bassera (1996). “The depletion of W in the bulk-silicate Earth: constraints on core formation.” Geochimica et Cosmochimica Acta, 60, 7, 1155-1169. doi: 10.1016/0016-7037(96)00029-4. Development of novel analytical protocols Sims, K.W.W., J. Gill, A. Dossetto, D. Hoffmann, C.C. Lundstom, R. Williams, L.A. Ball, D. Tollstrup, S.P. Turner, J. Prytulak, J. Glessner, J.J. Standish, and T. Elliott (2008). “An inter-laboratory assessment of the Th Isotopic Composition of Synthetic and Rock standards.” Geostandards and Analytical Research, 32, 1, 65-91. doi: 10.1111/j.1751-908X.2008.00870.x. Ball, L.A., K.W.W. Sims, and J. Schwieters (2008). “Measurement of 234U/238U and 230Th/232Th in volcanic rocks using the Neptune PIMMS.” Journal Analytical Atomic Spectrometry, 23, 173-180. doi: 10.1039/b703193a. Layne, G.D. and K.W.W. Sims (2000). “Analysis of 232Th/230Th in volcanic rocks by Secondary Ionization Mass Spectrometry.” International Journal of Mass Spectrometry, 203, 1-3, 187-198. Dulaiova, H., K.W.W. Sims, and M.A. Charette (2013). “A new method for the determination of low-level actinium-227 in geological samples.” Journal of RadioAnalytical and Nuclear Chemistry, 296, 279-283. doi:10.1007/s10967-012-2140-0.) Lane-Smith, D. and K.W.W. Sims (2013). “The effect of CO2 on the measurement of 220Rn and 222Rn, with instruments utilizing electrostatic precipitation.” Acta Geophysica, 61, 4, 822-830 (Special volume on Geo-Hazards; Guest editor: Rakesh Chand Ramola) doi: 10.2478/s11600-013-0107-3. Sims, K.W.W., and E.S. Gladney (1991). “Determination of As, Sb, W and