A hierarchical identification method for carbonate fold structures

By delineating identifiable geological units of carbonate rocks and combining stratigraphic dip variations and symmetry relationships, the problem of accurately identifying fold structures in carbonate rock areas was solved, a standardized identification method was achieved, and the reliability and consistency of identification were improved.

CN122386401APending Publication Date: 2026-07-14KUNMING UNIV OF SCI & TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KUNMING UNIV OF SCI & TECH
Filing Date
2026-04-15
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In carbonate rock areas, traditional methods are difficult to accurately identify fold structures, lack standardized basis, are easily affected by karst processes, and rely on personal experience, leading to misjudgment or omission, and the judgment results vary greatly among different people.

Method used

By delineating identifiable geological units, a preliminary determination is made using the color, structure, and composition of carbonate rocks. A secondary determination is made by combining changes in the dip angle and symmetry of the strata. Finally, a tertiary determination is made based on the macroscopic geomorphological features to eliminate the illusions of faults and karst collapses.

Benefits of technology

It enables accurate identification of fold structures in carbonate rock areas, reduces reliance on personal experience, improves the reliability and consistency of identification, and is applicable to outcrop and remote sensing data, with wide applicability.

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Abstract

The application discloses a hierarchical identification method for carbonate rock fold structure and relates to the technical field of geological structure exploration. In view of the technical problems of uniform lithology, lack of identification marks and strong karst interference in the carbonate rock area, the application provides a hierarchical identification method based on the field identifiable marks of the carbonate rock. Firstly, the field identifiable geological unit is circled by using the carbonate rock stratum identification evaluation index; secondly, the first-level identification is carried out by excluding the fault interference, and the corresponding section is circled as the suspected area of the fold structure; then, the second-level identification is carried out by the variation law of the stratum dip angle and the mirror symmetry or the comparable relationship, and whether the suspected area of the fold structure exists is determined, wherein the comparable symmetry relationship includes color symmetry, structure symmetry, component symmetry, mark layer symmetry and occurrence symmetry; finally, the macro-landform performance of the fold structure determined after the second-level identification is inferred, and whether the inferred landform exists is verified. The application effectively excludes the karst collapse and the fault interference factors by combining the field identifiable marks of the carbonate rock with the hierarchical identification, and realizes the standardization and objectivity of the fold structure identification in the carbonate rock area.
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