The GEOTEK's MSCL available at the ACF includes measurements of P-wave velocity, gamma density, magnetic susceptibility and visible light colour spectroscopy. The ACF-MSCL is the only available tool in Austria for gathering all these data in an automated and quality-controlled way. Typically, the MSCL can log cores at high-resolution l at a rate of ~1 metres per hour (sampling intervals of down to 2-5 mm). Its flexibility is such that it can analyse either whole or split cores between 50 and 150mm in diameter cut into sections up to 1.5 m long. Available sensors at the ACF are (i) ARC as well as (ii) reciprocating piston transducers (Geotek´s P-Wave sensors, see more information here); (iii) a gamma ray source and detector for calibrated bulk density measurments (link); (iv) MS2C Loop and (v) MS2E Point Magnetic Susceptivlity sensors (link); and (vi) a CM-700D Spectrophotometer (link).
Smartcube Camera Image Scanner for split sediment cores or whole-round rock cores (360° scan)
The ITRAX™ Core Scanner collects element profiles in the range Si-U downcore from split core sections up to 12 cm in diameter and 1.8 m in length. Core sections are first scanned to achieve a constant working distance from the X-ray detector using a laser finder to map the topography of the cut core surface. Then scanned at a step-size that is defined by the user to obtain an ED-XRF spectrum at each step. A digital continuous-strip X-radiograph, 22 mm in width, can be collected immediately prior to the XRF scan using a charge-coupled (CCD) line camera located below the core. The count time for each measurement is also user-definable but should not be less than 30 seconds if minor elements are to be well-detected. The X-ray beam used to irradiate the core is generated using a 3kW Mo X-ray tube (typically run at 55kV and 50 ma for x-radiography and 30kV and 50ma for the XRF scan) and focused through a flat capillary wave guide. The recorded spectra are deconvolved in live time to construct profiles of peak area integrals for individual elements and Rayleigh and Compton scattering peaks. The element peak area will reflect element abundances within the sediment.
- High-resolution geochemical proxy data for measuring environmental change
- Bed provenance and correlation
- Distribution of contaminants and diagentic relocation
- Identification and characterisation of palaeosols, volcanic ash and ice-rafted debris
- and many other applications......