Research Highlights

  • Analysis of Sr in carbonate shell-material to define the Sr seawater curve.
  • Analysis of Sr from carbonate and sulphate-rich sedimentary rocks to determine marine versus non-marine origin.
  • Analysis of Sr from siliciclastic sedimentary rocks and sediments to establish provenance.
  • Analysis of Sr from fresh-water and pore-waters, to establish provenance.
  • Composition of modern mantle from geochemical studies of basaltic rocks from oceanic islands and mid-ocean ridges; the interplay between tectonism and magmatic processes in continental volcanism; and the application of geochemical models to the origin of ancient volcanic rock sequences and metalliferous deposits.
  • Pb, Nd and Sr isotope geochemistry of carbonatites and alkalic rocks of shield areas to characterize the geochemical evolution of their mantle sources.
  • Measurement of 40Ca/42Ca ratios from carbonatites of different ages to monitor mantle evolution through Earth's history.
  • Measurement of fractionation of Ca isotopic ratios (44Ca) in marine carbonates, with applications for paleotemperatures, biogeochemical processes, and the geological and environmental evolution of the planet.
  • Measurement of 48Ca anomalies in carbonatites worldwide to evaluate an involvement of distinct nucleosynthetic sources during the Earth's accretion and the scale of mantle differentiation.
  • Measurement of boron (11B) isotopic composition in marine carbonates with implications for the paleo-pH variations in seawater.
  • U-Pb geochronology analyses of subdomains of zircon and monazite crystals in conjunction with imaging techniques establish ages of more than one growth, recrystallisation and/or Pb-loss event in crystals with complex history.
  • U-Pb geochronology studies to constrain timing of deformation and metamorphism in high-grade rocks of the Canadian Cordillera and Grenville Province; implications for geologic process and tectonics during the formation of mountain-belts.
  • TIMS U-Pb geochronology studies paired with MC-ICP-MS data from Hf in dated zircons to constrain age and source of rocks.
  • Tracing the mobility of metals in subduction zones using isotopic ratios of serpentines and mantle-derived xenoliths.
  • U-Th disequilibrium dating to resolve the ages of regional climatic variations and sea level change.