A method and system for delineating geochemical anomalies based on data regularization

Abstract

The invention relates to a method and system for delineating geochemical anomalies based on data regularization. The method includes: acquiring exploration geochemical data of a study area; generating a geochemical data point file according to the exploration geochemical data on a GIS platform of a geographic information system, and acquiring a GIS format stratigraphic file of the study area; according to the The geochemical data point file and the GIS format stratigraphic file generate a geochemical point file with stratigraphic attributes; based on the geochemical point file with stratigraphic attributes, the geochemical data in different stratigraphic attributes is normalized, Determine the regularized geochemical data; calculate the abnormal lower limit of the regularized geochemical data; delineate the geochemical abnormality according to the abnormal lower limit. The invention can effectively remove or filter false anomalies caused by formation lithology, identify weak anomalies, and improve the rationality of the selected anomaly lower limit.

Description

technical field [0001] The invention relates to the field of exploration geochemistry, in particular to a method and system for delineating geochemical anomalies based on data regularization. Background technique [0002] Exploration geochemistry is one of the important mineral prospecting methods and plays an important role in mineral prospecting. The processing results of the exploration geochemical data will directly affect the understanding of the ore-forming geology of the work area and the delineation of the exploration target area, and then directly affect the results of mineral exploration. [0003] The previous processing methods for geochemical survey data were mainly to interpolate all the data using the inverse distance square or kriging method to generate contour maps, and then use some general methods such as mean + 2 times the standard deviation or fractal method to determine the exception lower bound. Its shortcoming is that it does not take enough consider...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a geochemical anomaly delineation method and system based on data regularization, so as to solve the problem that the existing geochemical data processing methods for exploration cannot fully reflect the geochemical differences caused by various lithologies or geological bodies, resulting in the generation of Some false anomalies or weak anomalies cannot be identified, and the rationality of the selected abnormal lower limit is low

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