Staff profiles

Bob DitchburnEmeritus Scientist

Ditchburn Bob 1848

Department

Hydrothermal Systems and Minerals

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Qualifications

  • New Zealand Certificate in Science, Chemistry

Areas of expertise

  • Radiochemistry: Inorganic and radiochemistry
  • Radiochemistry: Radiometric dating

Publications

Selection of major publications
  • Ditchburn, R.G. 2018. An improved method to oxidize volcanogenic massive sulphide mineralization and isolate barite for radiometric dating using 226Ra, 228Ra, 228Th and 210Pb DOI: 10.21420/G2K927. Lower Hutt, N.Z.: GNS Science. GNS Science report 2018/04 17 p.
  • Ditchburn, R.G.; de Ronde, C.E.J. 2017. Evidence for remobilization of barite affecting radiometric dating using 228Ra, 228Th, and 226Ra/Ba values : implications for the evolution of sea-floor volcanogenic massive sulfides, Economic Geology 112(5): p. 1231-1245. DOI: 10.5382/econgeo.2017.4508. p. 1231-1245
  • Ditchburn, R.G.; de Ronde, C.E.J. 2016. Assessing ages and duration of mineralisation of submarine volcanic arc-related metal-rich deposits using naturally occurring radioactive isotopes, Mineral deposits of New Zealand : exploration and research : p. 407-412. p. 407-412
  • de Ronde, C.E.J.; Chadwick, W.W.; Ditchburn, R.G.; Embley, R.W.; Tunnicliffe, V.; Baker, E.T.; Walker, S.L.; Ferrini, V.L.; Merle, S.M. 2015. Molten sulfur lakes of intraoceanic arc volcanoes, Volcanic lakes : p. 261-288. DOI: 10.1007/978-3-642-36833-2_11. p. 261-288
  • Graham, I.J.; Ditchburn, R.G.; Morgenstern, U. 2015. Hot topics, A continent on the move : New Zealand geoscience revealed : p. 62-63. p. 62-63
  • Panek, T.; Mentlik, P.; Ditchburn, R.G.; Zondervan, A.; Norton, K.; Hradecky, J. 2015. Are sackungen diagnostic features of (de)glaciated mountains?, Geomorphology 248: p. 396-410. DOI: 10.1016/j.geomorph.2015.07.022. p. 396-410
  • Schiller, M.; Dickinson, W.; Zondervan, A.; Ditchburn, R.G.; Wang, N. 2014. Rapid soil accumulation in a frozen landscape, Geology 42(4): p. 335-338. DOI: 10.1130/G35450.1. p. 335-338
  • Johns, S.M.; Ditchburn, R.G.; Barry, B.J.; Yeats, C.J. 2014. Episodic subseafloor hydrothermal activity within the eastern Manus back-arc basin determined by uranium-series disequilibrium in barite, Economic Geology 109(8): p. 2227-2242. DOI: 10.2113/econgeo.109.8.2227. p. 2227-2242
  • de Ronde, C.E.J.; Walker, S.L.; Ditchburn, R.G.; Caratori Tontini, F.; Hannington, M.D.; Merle, S.G.; Timm, C.; Handler, M.R.; Wysoczanski, R.J.; Dekov, V.M.; Kamenov, G.D.; Baker, E.T.; Embley, R.W.; Lupton, J.E.; Stoffers, P. 2014. The anatomy of a buried submarine hydrothermal system, Clark volcano, Kermadec arc, New Zealand, Economic Geology 109(8): p. 2261-2292. DOI: 10.2113/econgeo.109.8.2261. p. 2261-2292
  • Morgenstern, U.; Ditchburn, R.G.; Vologina, E.G.; Sturm, M. 2013. 32Si dating of sediments from Lake Baikal, Journal of paleolimnology 50(3): p. 345-352. DOI: 10.1007/s10933-013-9729-3. p. 345-352
  • Ditchburn, R.G.; de Ronde, C.E.J.; Barry, B.J. 2012. Radiometric dating of volcanogenic massive sulfides and associated iron oxide crusts with an emphasis on 226Ra/Ba and 228Ra/226Ra in volcanic and hydrothermal processes at intraoceanic arcs, Economic Geology 107(8): p. 1635-1648. DOI: 10.2113/econgeo.107.8.1635. p. 1635-1648
  • Uthicke, S.; Patel, F.; Ditchburn, R.G. 2012. Elevated land runoff after European settlement perturbs persistent foraminiferal assemblages on the Great Barrier Reef, Ecology 93(1): p. 111-121. DOI: 10.1890/11-0665.1. p. 111-121
  • Graham, I.J.; Ditchburn, R.G.; Barry, B.J. 2003. Atmospheric deposition of 7Be and 10Be in New Zealand rain (1996-98), Geochimica et Cosmochimica Acta 67(3): p. 361-373. DOI: 10.1016/S0016-7037(02)01092-X. Institute of Geological & Nuclear Sciences contribution 2676 p. 361-373
  • Graham, I.J.; Ditchburn, R.G.; Claridge, G.G.C.; Whitehead, N.E.; Zondervan, A.; Sheppard, D.S. 2002. Dating Antarctic soils using atmosphere-derived 10Be and nitrate, Antarctica at the close of a millennium : proceedings of the 8th International Symposium on Antarctic Earth Sciences, Wellington, 1999 : p. 429-436. Institute of Geological & Nuclear Sciences contribution 2625 p. 429-436
  • Whitehead, N.E.; Ditchburn, R.G.; Williams, P.W.; McCabe, W.J. 1999. 231Pa and 230Th contamination at zero age : a possible limitation on U/Th series dating of speleothem material, Chemical Geology 156(1-4): p. 359-366. DOI: 10.1016/S0009-2541(98)00192-2. [s.l.]: [s.n.]. Institute of Geological & Nuclear Sciences contribution 1675 p. 359-366
  • Graham, I.J.; Ditchburn, R.G.; Whitehead, N.E. 1998. 10Be spikes in Plio-Pleistocene cyclothems, Wanganui Basin, New Zealand : identification of the local flooding surface (LFS), Sedimentary Geology 122(1/4): p. 193-215. DOI: 10.1016/S0037-0738(98)00106-7. [s.l.]: [s.n.]. Institute of Geological & Nuclear Sciences contribution 1733 p. 193-215
  • Whitehead, N.E.; Ditchburn, R.G.; McCabe, W.J.; Rankin, P. 1992. A new model for the origin of the anomalous radioactivity in Niue Island (South Pacific) soils, Chemical Geology 94(4): p. 247-260. DOI: 10.1016/S0009-2541(10)80028-2. [s.l.]: [s.n.]. DSIR Physical Sciences reprint 138 p. 247-260
  • McCabe, W.J.; Ditchburn, R.G.; Whitehead, N.E. 1992. A method for separation of Po, Th, Pa, and U in high yields from various matrices, Journal of radioanalytical and nuclear chemistry 159(2): p. 267-279. [s.l.]: [s.n.]. Institute of Geological & Nuclear Sciences contribution 051 p. 267-279

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