Method for comprehensively analyzing and judging formation cause and sedimentary environment of siliceous rock by utilizing multiple indexes

By preprocessing and testing siliceous rock samples using a multi-index comprehensive analysis method, combined with graphical verification, the accuracy problem of identifying the genesis and sedimentary environment of siliceous rocks in existing technologies has been solved. This has enabled precise differentiation of genetic types and definition of sedimentary environments, improving the reliability and feasibility of geological interpretation.

CN122109268APending Publication Date: 2026-05-29OIL & GAS SURVEY CGS
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Patent Information

Application Number
CN202610350522.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-20
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies lack systematic and standardized methods to determine the genetic type and sedimentary environment of siliceous rocks. In particular, there is a lack of unified quantitative criteria and visualization standards in complex genetic and tectonic settings, which limits the application of siliceous rocks in geotectonic and paleoenvironmental reconstruction.

Method used

A multi-index comprehensive analysis method was adopted, including pretreatment of siliceous rock samples, testing of major elements, trace elements, rare earth elements and silicon isotopes, calculation of genetic parameters and environmental parameters, and verification by graphs to form the final judgment conclusion.

Benefits of technology

It enables precise differentiation of the genetic types of siliceous rocks and clear definition of sedimentary environments, improving the accuracy and reliability of the identification. It solves the problems of multiple solutions and logical fragmentation in single-index identification and is applicable to regional tectonic evolution research, paleo-marine environment reconstruction and mineral resource exploration.

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Abstract

The invention provides a method for comprehensively analyzing and judging formation causes and sedimentary environments of siliceous rocks by the aid of multiple indexes, and relates to the technical field of geological exploration and geochemistry. The method includes pretreating siliceous rock samples to obtain to-be-detected powder samples; testing the powder sample to be tested to obtain the corresponding element content; calculating and obtaining cause parameters representing the cause type of the siliceous rock, and then obtaining a cause type judgment result; calculating and obtaining environmental parameters representing the siliceous rock deposition environment, and then obtaining a deposition environment judgment result; and performing comprehensive analysis and cross validation on the judgment result to form a final judgment conclusion. According to the method, through comprehensive analysis of various indexes such as main quantity, trace quantity, rare earth and the like and combination of cross validation of various diagrams, siliceous rocks of hot water deposition, biogenesis and composite formation can be effectively distinguished, multiplicity and subjectivity of traditional single-index discrimination are obviously reduced, and through element ratio and diagrams analysis, the method has the advantages of being high in accuracy and high in accuracy. And sedimentary environments such as mainland edges and ocean basins can be accurately judged.
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