Geomorphological-sedimentological Laboratory

The geomorphological-sedimentological laboratory is equipped for field work to recover short and up to 20 m-long sediment cores from lakes and to monitor the particle flow in the lacustrine water column. Furthermore, the laboratory is designed for the non-destructive and continuous investigation of sediment cores with physical methods and to perform geochemical analyses with a high sample throughput, as it is necessary for studies of high-resolution sediment sequences from natural environmental archives. The following devices with high operational capacity are available:

Field equipment

  • Coring platform motorised with a long-shaft outboard engine and two different-sized rubber boats either with combustion or electric outboard engines
  • Field generator (220 V)
  • Surveying instruments including a differential Global Positioning System (dGPS)
  • Sediment echograph
  • Several gravity coring systems (diameter: 60 mm) to recover the sediment/water interface and surface sediments of up to 2.5 m in length
  • Niederreiter piston coring system to recover long sediment cores (diameters: 60/90 mm)
  • Hand-operated winch with a Ruttner water sampler
  • Multiparameter sonde to measure temperature, pH, electrical conductivity, oxygen content and redox potential
  • CTD (conductivity, temperature, depth) sonde with turbidity sensor
  • Computer-controlled sediment trap (Technicap PPS 4/3) for sequential collection of particle samples in the water column

Laboratory equipment

  • Lake core repository, i.e. a walk-in cold room (+4°C) for the storage of sediment cores
  • Mechanic core splitter for precise core splitting of PVC-liners with up to 90 mm diameter
  • XRF core scanner (ITRAX, Cox Analytics) for major and trace element analysis including digital line-scanning and radiographic image capturing systems with a resolution of 200 µm
  • Scanning system for magnetic susceptibility using Bartington MS2E and MS2F point sensors; this scanning device can be equipped with a loop sensor (Bartington MS2C) for whole core measurements
  • Bartington MS2B sensor for frequency dependent determination of magnetic susceptibility
  • Equipment to shock freeze, freeze dry (LYOVAC GT2) and impregnate soft sediments
  • Petrographic (polarizing) microscopes and binoculars with conventional and digital image capturing systems
  • CNS elemental analyser (EURO-EA, HEKAtech with TOC-kit) for the determination of total carbon (TC) - after removal of carbonates also of total organic carbon (TOC) and total inorganic carbon (TIC), total nitrogen (TN) and total sulphur (TS)
  • Muffle furnace (NABERTHERM) to determine loss on ignition at various temperatures
  • Continuous flow system with UV-VIS spectrometry (SKALAR) for the determination of biogenic silica
  • Laser-granulometry (LS 200, BECKMAN-COULTER) for grain-size analyses ranging from 0.4-2000 µm
  • Sieving machine (RETSCH) for grain-size measurements ranging from 0.063-20 mm