Method for calculating geological evolution quality migration amount

Abstract

The present application relates to the technical field of geochemical quality migration calculation, in particular to a method for calculating the quality migration of geological evolution, and mainly comprises the following characteristics: an initial material-product geological evolution conceptual box model is established, the mass concentration of each element in different subsystems is determined, the system evolution degree epsilon is calculated to measure the degree of system mass change, the element activity ability is measured by calculating the partition coefficient D i , and finally the quality migration is calculated by using a formula to objectively reflect the mass change process of the element; compared with the prior art, the present application does not need to assume inactive elements, avoids subjective bias, can effectively overcome the influence of the closed effect, and provides more reliable calculation results of the element quality migration; the method is widely applicable to the field of geological research, and has significant application value in aspects of structural background discrimination, magmatic rock classification, and sediment source area analysis.

Description

Technical Field

[0001] This invention relates to the field of geochemical mass migration calculation technology, and in particular to a method for calculating the mass migration of geological evolution. Background Technology

[0002] Elemental mass migration plays a crucial role in geological evolution. Traditionally, changes in elemental mass are described by variations in their concentrations, with higher concentrations indicating enrichment and lower concentrations indicating depletion. However, this view is incorrect because, under closed-loop operations, the n-dimensional elemental mass system transforms into an n-1-dimensional concentration system, resulting in a non-linear relationship between mass and concentration. This means that concentration changes cannot directly reflect elemental mass changes, and may even lead to instances where higher concentrations result in depletion and lower concentrations in enrichment. Therefore, concentration changes cannot accurately reveal elemental mass migration behavior. Elemental mass migration behavior is categorized into three types: enrichment, depletion, and inactivity. Elemental mass migration is a more effective indicator of elemental activity. Currently, the main international method for calculating elemental mass migration is the Grant equation (Grant, 1986). This method assumes the selection of inactive elements for calculation, but this process is subjective and may lead to calculated mass migration results that do not conform to actual geological facts. Furthermore, the Grant equation focuses on the initial matter and major evolutionary products, neglecting the role of minor evolutionary products in the evolutionary process. It does not fully consider the key parameters controlling elemental activity and cannot fundamentally reflect the laws governing elemental activity, thus having certain limitations.

[0003] Therefore, a method for calculating the migration of geological evolution quality is proposed. Summary of the Invention

[0004] The present invention aims to provide a method for calculating the migration of geological evolution quality in order to solve the above problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A method for calculating the mass migration of geological evolution includes: calculating the system evolution degree, calculating the partition coefficient, and calculating the mass migration.

[0007] The specific steps of this invention are as follows:

[0008] S1. Establish a concept box model of geological evolution of initial material and product, in which the mass-deficient model is O→A+B and the mass-increasing model is O+B→A, where O is the initial system, A is the research target subsystem, and B is other subsystems. In the mass-deficient model, B is the product, and in the mass-increasing model, B is the initial material.

[0009] S2. Determine the mass concentration of each element in O, A, and B. , and Where C represents mass concentration and i represents a specific element;

[0010] S3, Calculation , Scatter plots of XY are performed, and straight lines are fitted using the least squares method. The fitting criterion is a coefficient of determination of not less than 0.65, where the slope is... This represents the degree of system evolution, indicating the extent of quality change in the entire system. This indicates an increase in system quality. This indicates that the system quality remains unchanged. This indicates a loss in system quality;

[0011] S4. Calculate the partition coefficient. It measures the activity capacity of an element;

[0012] S5. Calculate element mass migration. This represents the degree of change in the mass of an element, thus allowing us to study the behavior of mass change in elements. This indicates an increase in quality. Indicates inactivity. This indicates a loss in quality.

[0013] Compared with existing technologies, the present invention achieves the following beneficial effects:

[0014] This invention, by establishing a concept box model, clearly demonstrates the direction of geological evolution, improving the understanding of geological evolution processes; through formulas... The system evolution degree can be calculated without assuming the selection of inactive elements, thus avoiding the bias caused by subjectivity in traditional methods; the system evolution degree is fitted by the least squares method. This ensures the robustness and accuracy of the calculation results; through the formula Calculating elemental mass migration amounts to study elemental mass changes effectively overcomes the influence of the closure effect and objectively reflects the behavior of elemental mass changes. Attached Figure Description

[0015] Figure 1 is a flowchart of the present invention;

[0016] Figure 2 is an evolutionary conceptual model diagram of an embodiment of the present invention;

[0017] Figure 3 is a scatter plot of the least squares fitting of the system evolution degree in an embodiment of the present invention;

[0018] Figure 4 shows the mass evolution data and mass migration calculation results of an embodiment of the present invention. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] A method for calculating the migration of geological evolution quality includes the following steps:

[0021] Step 1: Establish a concept box model of the geological evolution of initial material-products, in which the mass defect model is O→A+B, where O is the initial rhyolite system, A is the target metal sulfide subsystem, and B is other glass subsystems;

[0022] Step 2: Determine the mass concentration of each element in O, A, and B. , and The elements studied include Mn, Co, Cu, Zn, Mo, Ag, and W;

[0023] Step 3: Calculation , Scatter plots of XY are performed, and straight lines are fitted using the least squares method. The fitting criterion is a coefficient of determination of not less than 0.65, where the slope is... , representing the degree of system evolution, indicating the extent of quality change in the entire system, and the fit. If the value falls within the interval (-1, 0), it indicates a system quality deficit.

[0024] Step 4: Calculate the partition coefficient ;

[0025] Step 5: Calculate the mass migration amount This represents the degree of change in the mass of an element, thus allowing us to study the behavior of mass change in elements. This indicates that Cu is essentially inactive during the differentiation of rhyolite into metal sulfides, and the mass of Cu is almost entirely preserved in the metal sulfide subsystem A. The mass migration of other elements is less than 0, indicating a mass deficit.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method of calculating a quantity of quality migration of geologic evolution, characterized by: The mass migration is calculated using the system evolution degree and partition coefficient, including the following specific steps: S1. Establish a concept box model of geological evolution of initial material and product, in which the mass-deficient model is O→A+B and the mass-increasing model is O+B→A, where O is the initial system, A is the research target subsystem, and B is other subsystems. In the mass-deficient model, B is the product, and in the mass-increasing model, B is the initial material. S2, determining the mass concentration of each element in O, A, B , and where C denotes the mass concentration, and i denotes a specific element; S3, calculate , scatter plot of X-Y, fitting a straight line by least square method , fitting standard is that the determination coefficient is not less than 0.65, wherein the slope , indicates the system evolution degree, represents the quality change degree of the whole system, indicates the system mass increase, indicates that the system mass is constant, indicates the system mass loss; S4, calculating the partition coefficient , measures the mobility of the elements; S5. Calculate element mass migration. This represents the degree of change in the mass of an element, thus allowing us to study the behavior of mass change in elements. This indicates an increase in quality. Indicates inactivity. This indicates a loss in quality.

2. The method according to claim 1, characterized in that, The method described is applicable to the field of planetary evolution research.

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