NEWS

Following the very successful joint launch of their Airborne Multispectral Thematic Image Maps at the Celtic Club, West Perth last November, AGARSS and Mackay & Schnellman are both pleased to announce the addition of the Menzies and Kalgoorlie 1:250,000 map sheets to their archive of "off-the-shelf" products. Coming soon will be coverage of the Laverton, Edjudina and Kurnalpi map sheets.

The Thematic Map sets comprise digital mineral indices derived from archival Geoscan Airborne Multi-Spectral data which have been geo-referenced and can be incorporated into any digital Geographic Information System (GIS). Indices for iron-oxides, clay content, carbonate and silica comprise the standard set and can be viewed individually either as grey scale or density sliced images or combined in various red-green-blue (RGB) colour displays for interpretive mapping purposes. The sets are produced on CD-rom for ease of assimilation into customer GIS databases and come with an additional RGB 3 band image, equivalent spectrally to a Landsat TM 7-4-1RGB image, useful for both geological and structural interpretations.

Greyscale silica index map
Density sliced clay index map
Iron oxide - clay - silica combined RGB thematic image map

The combination of specific mineral indices and much higher spatial resolution than is possible with satellite data at prices comparable to those for Landsat TM imagery has attracted a lot of attention for explorers interested both in mapping geology and regolith as well as those who wish to use the data for exploration targeting.

Map sets can be purchased for standard map sheet areas at standard scales ranging upwards from 1:25,000 to 1:250,000 or can be customised to meet customers specific tenement holdings. Furthermore, other mineral indices such as talc or sericite can also be produced upon request.

The product offers explorers a very powerful, high resolution base data set that can be tailored directly to their specific spatial and mineralogical needs. Furthermore, the costly purchasing and time consuming specialist processing and interpretation. of entire raw digital data sets is avoided, the geologist being supplied at the outset with meaningful geological information.