The philosophy, design and applications of the New South Wales geological survey's metallogenic mapping programs
Titel:
The philosophy, design and applications of the New South Wales geological survey's metallogenic mapping programs
Auteur:
Bowman, H. N. Stevens, B. P. J.
Verschenen in:
Australian journal of earth sciences
Paginering:
Jaargang 25 (1978) nr. 3-4 pagina's 121-140
Jaar:
1978-06
Inhoud:
The metallogenic mapping program of the Geological Survey, Department of Mines, New South Wales has two aims, to provide an inventory of information on all known mineral deposits in New South Wales, and to enable the recognition and delineation of metallogenic districts and provinces. Each deposit is described on a standardized data sheet. Selected information is symbolized on a coloured geological or tectonic background map at a scale of 1:250 000. This scale is considered to be suitable for locating deposits in the field and at the same time gives an impression of the regional distribution of deposits. The tectonic map is constructed using a plate tectonic model. Each map is accompanied by interpretative notes which are not of standard form but in which one of three approaches may be adopted: an interpretation according to the geological association, the delineating of groupings of deposits in structural zones, and the recognition of metallogenic units based on a plate tectonic model. In many, but not all cases, mineral districts were first delineated before the above approaches were adopted. The New South Wales Geological Survey's metallogenic maps may be used to develop concepts in ore genesis, and prognostic concepts for exploration. They assist in understanding the relationships between tectonic process and the concentration of ore minerals. They are valuable in land use and resource management studies.
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