Abstract
Abstract. Dykes are always closely coexisting with ore veins in deposit, they are of great significance in the revelation of regional geology evolution, prosperity of ore prospecting. This paper presents a method for the generalization of dykes as part of automated geological map generalization progress. Based on the principle of good continuation, dykes were amalgamated preliminarily. Then the reserve quota was calculated on the basis of radical law for the editing of dykes. Finally, the outer shape and internal construction of dykes were simplified. The experiment results show that the generalization method can avoid discontinuity as a prerequisite to retaining formation lithology and characteristics of geological structure. This method offers a new perspective for dealing with exceptional geographic elements while generalizing a geologic map.
Highlights
Geological map is one of the main carriers of geology production, and the major tools to serve the economic and social development
It is one of the main symbols of the degree of geological research, the level of geological science and technology and the degree of social civilization. It has always been highly valued by the governments of various countries and international geoscience organizations (Li,2011). When it comes to geological map, it doesn ’ t mean the more detailed the better, on several occasions such as regional geological map, we need to craft the geographic information strategically
This paper put forward a new automatic generalization method that considers the influence of the geological process and the original state of the reduction of the dykes
Summary
Geological map is one of the main carriers of geology production, and the major tools to serve the economic and social development It is one of the main symbols of the degree of geological research, the level of geological science and technology and the degree of social civilization. It has always been highly valued by the governments of various countries and international geoscience organizations (Li,2011). When reducing the scale of a geological map it is necessary to emphasise (emphasize) essential geological detail whilst repressing the unimportant This process of abstraction, termed generalisation (generalization), is acknowledged to be subjective, but must attempt to maintain the logical and unambiguous relations between map objects, showing the salient features, possibly in a simplified form, whilst removing unnecessary detail (Loudon, 2000). The ability to and quickly generalise (generalize) such data sets would be highly advantageous, in the context of current digital frameworks (Downs T C,2002)
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