AuScope Grid Access and Interoperability
NVCL
The National Virtual Core Library (NVCL) layer facilitates research into the composition of the top two kms of the Australian Continent by hyperspectrally scanning the millions of meters of drill core archived in Federal, State, and Territory Geological Surveys.
The NVCL program has the goal of progressively building a novel high-resolution image of earth materials and properties and facilitating world-class geoscience research. The NCVL will contain both mineralogical and image content describing the geology of a selection of the nation’s most valuable drill core assets. This information is currently captured using CSIRO’s suite of HyLogging™ Systems technologies.
About HyLogging™
HyLogging™ Systems are a suite of hardware and software tools for the non-destructive spectroscopic scanning of diamond drill cores and drill chips in their original trays.
The systems work by moving drill core and chip trays on a robotic table beneath the fixed gaze of several reflectance spectrometers, a laser profiler and a high-resolution digital imaging system. The spectral data stream comprises visible and infrared light differentially reflected and absorbed by selected minerals in the field-of-view of the instruments. The field-of-view of the spectrometers is nominally 10mm and samples are collected contiguously. The resolution of the imaging system is 0.1 mm. From the spectroscopic data information about the mineralogical content (species and relative abundance) of the drilled material can be interpreted and is derived from specific molecular absorption features of many minerals.
The mineralogical information, supported by the high-resolution imagery, gives geologists and metallurgists a new set of eyes to gain greater insight into the composition of the earth and increases the objectivity of interpretations.
Map Search
For an overview of all drill holes users may select ‘National Virtual Core Library’ from AuScope Portal ‘Feature Layers’ tab and click ‘Add Layer to Map’ button.
Displayed markers will denote drill-holes known to be stored in one of physical core libraries and scanned with a HyLogging System.