I am a palaeoceanographer with expertise in the measurement of radiogenic isotope compositions (Pb, Sr, Nd) and trace metal concentrations (rare earth elements) in marine sample materials. My research involves the application of these techniques to a variety of current marine and palaeoceanographic research topics, e.g. carbonate biomineralisation and the response of skeletal uptake of trace metals to environmental change, how dissolved trace metal concentrations respond to changes in environment and climate. An important part of this work involves developing new methods to improve measurement of these isotopes and elements in marine archive materials. At SAMS, we are developing methods for the analysis of materials with low abundance trace metal concentrations (e.g. seawater, biogenic carbonate and organics) by combined SeaFAST+ICP-MS.
2018 – present Science Coordinator of the NERC Changing Arctic Ocean, and she carries out this role based in the School of Geosciences at the University of Edinburgh.
2013-2018 Lecturer and Principal Investigator in Palaeoceanography. SAMS
2012-2013 Research Programme Officer for geothermal energy, DG Research and Innovation, European Commission, Brussels, Belgium.
2009-2012 Post-doctoral Research Associate, Imperial College London, UK. Research project: Deglacial Atlantic Ocean Ventilation Rates. Supervisor: Dr Tina van de Flierdt. Funder: NERC
2005-2009 PhD "Pb and Nd isotope constraints on continental weathering and ocean circulation in the North Atlantic during the last glacial/interglacial cycle", University of Bristol, UK. Supervisors: Dr David Richards, Dr Gavin Foster, Prof Derek Vance, Prof Martyn Tranter. Funder: NERC
Active research projects:
Iron BREW (November 2015): Examining the role and efficiency of dissolved organic matter from peat bogs as a transport vector of trace metals across salinity gradients in Scottish sea lochs. Funding body: MASTS Coastal Processes & Dynamics Forum
COREE (July 2015): Determining the partitioning of dissolved seawater rare earth elements into coral skeletons under different seawater pH treatments to establish their potential as proxies for the marine carbonate system. Funding body: Carnegie Trust Research Incentive Grant
REEL IT IN (September 2015): Identifying the sources, sinks and cycling of rare earth elements in seawater in a well-defined part of the NE Atlantic, the Extended Ellett Line, to address the underlying question of how seawater acquires its composition and to provide a baseline to monitor change as the marine carbonate system shifts in response to increasing atmospheric CO2. Funding body: SAMS Small Grant
Lambelet, M, Van de Flierdt, T, Crocket, KC, Rehkämper, M, Kreissig, K, Coles, B, Rijkenberg, MJA, Gerringa, LJA, De Baar H, and Steinfeldt, R (2016). ‘Neodymium isotopic composition and concentration in western North Atlantic seawater: results from the GEOTRACES GA02 section.’ Geochimica Et Cosmochimica Acta 177: 1-29.
Struve, T, van de Flierdt, T, Robinson, LF, Bradtmiller, LI, Hines, SK, Adkins, JF, Lambelet, M, Crocket, KC, Kreissig, K, Coles, B and Auro, ME (2016). ‘Neodymium isotope analyses after combined extraction of actinide and lanthanide elements from seawater and deep-sea coral aragonite.’ Geochemistry, Geophysics, Geosystems 17(1), 232-240.
Wilson, DJ, Crocket, KC, Van de Flierdt, T, Robinson, LF and Adkins, JF (2014). ‘Dynamic intermediate ocean circulation in the North Atlantic during Heinrich Stadial 1: a radiocarbon and neodymium isotope perspective.’ Paleoceanography. 2014PA002674 Doi: 10.1002/2014PA002674
Crocket, KC, Lambelet, M, Van de Flierdt, T, Rehkämper, M and Robinson, LF (2014). ‘Measurement of fossil deep-sea coral Nd isotopic compositions and concentrations by TIMS as NdO+, with evaluation of cleaning protocols.’ Chemical Geology 374-375: 128-140.
Crocket, KC, Foster, GL Vance, D, Richards, DA and Tranter, M (2013). ‘A Pb isotope tracer of ocean-ice sheet interaction: The record from the NE Atlantic during the last glacial/interglacial cycle.’ Quaternary Science Reviews 82: 133-144. Doi: 10.1016/j.quascirev.2013.10.020.