National Virtual Core Library NT

National Virtual Core Library (Northern Territory)

The AuScope National Virtual Core Library (NVCL) is a component of a collaborative research infrastructure project funded by the Federal Government's National Collaborative Research Infrastructure Strategy (NCRIS) within the Department of Innovation, Industry Science and Research.

The project involves collaboration between CSIRO, AuScope and most of the State and Territory geological surveys.

The NVCL's primary goal is to progressively build an Australia-wide drillcore database comprising high-resolution imagery and mineralogical data from spectroscopic scanning. The data can be used to further the understanding of the properties of the upper one to two kilometres of the Australian crust and to facilitate geoscience research. The data are being collected using CSIRO's HyLogger™ system then are processed and interpreted using The Spectral Geologist (TSG) software.

In late February 2010, the Northern Territory Geological Survey received its HyLogger at its Core Library Facility in Darwin. In June 2011, the HyLogger was upgraded with the addition of a TIR spectrometer, which allows for the identification of more minerals (such as quartz, feldspars and other silicates).

The NVCL Database is accessible through the Australian Geoscience Information Network (AusGIN) comprising data from all the surveys.

As of August 2018, there are over 140,000m of scanned core from 485 drillholes within the NT in the public domain.

Several external organisations have taken advantage of the HyLogger being available to Industry and Research groups. If you want to learn more about the HyLogger and see it in action or scan your core you can email belinda.smith@nt.gov.au to arrange a visit.

Outputs

As well as output via the NVCL framework, Northern Territory Geological Survey also provides the data integrated in datasets from focal areas as part of its program of delivering data packages.

Many of the scanned holes were co-funded by the NT Government through the Geophysics and Drilling Collaborations program. The List of Scanned Holes(73.5 kb) and HyLogger Drillhole Map (3.1 mb) are both regularly updated with new data as it’s released.

Initially a small number of interpreted datasets were released as NTGS Records but since 2013 interpreted datasets are released as HyLogger Data Packages (HDP).

Each HDP covers a single drill hole and contains a summary of the major findings, including a comparison of existing stratigraphic logs with mineral domain boundaries as identified in the hyperspectral data, The Spectral Geologist (TSG) format datasets can be viewed using the (free) TSG Viewer and include high resolution imagery of the core.

In addition to the individual HyLogger Data Packages, interpretations across a number of holes in a region may be released as NTGS Records and  some ad hoc, smaller informational reports, for example a comparison of mineral matches from the HyLogger with XRD mineral results, are also issued.

Presentations include:

Search the NTGS product catalogue to access data and reports on hyperspectral data.

Last updated: 20 September 2018