CN116697883A - Fixed-year analysis method for apatite fission track - Google Patents
Fixed-year analysis method for apatite fission track Download PDFInfo
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- CN116697883A CN116697883A CN202310581277.7A CN202310581277A CN116697883A CN 116697883 A CN116697883 A CN 116697883A CN 202310581277 A CN202310581277 A CN 202310581277A CN 116697883 A CN116697883 A CN 116697883A
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- 230000004992 fission Effects 0.000 title claims abstract description 63
- 229910052586 apatite Inorganic materials 0.000 title claims abstract description 27
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 title claims abstract description 27
- 238000004458 analytical method Methods 0.000 title claims description 38
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000003384 imaging method Methods 0.000 claims abstract description 28
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 238000005336 cracking Methods 0.000 claims abstract description 8
- 238000007781 pre-processing Methods 0.000 claims abstract description 6
- 238000011156 evaluation Methods 0.000 claims description 18
- 230000007613 environmental effect Effects 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 3
- 238000000399 optical microscopy Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 abstract description 3
- 238000012864 cross contamination Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004445 quantitative analysis Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000010191 image analysis Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000011524 similarity measure Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000012952 Resampling Methods 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02041—Interferometers characterised by particular imaging or detection techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/04—Measuring microscopes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The present invention relates to the field of earth science and technology. The invention relates to a method for analyzing apatite fission tracks for definite years. Which comprises the following steps: collecting an ore sample in a fixed range, analyzing the surface of the ore sample, and evaluating a fission track area in the ore sample; evaluating a cracking track area in the ore sample, cleaning and preprocessing the ore sample, and searching other similar ore samples in a range according to the cracking track area; according to the invention, high-precision quantitative analysis and calculation are carried out on the ore sample through three-dimensional imaging, the operation is simpler and more accurate, the factors such as cross contamination of the sample and manual scale error are greatly reduced, the detection efficiency and the production rate are improved, the ore age is automatically identified and analyzed, the accuracy is high, the speed is high, the error caused by manual identification is avoided, and a reliable data base is provided for determining the ore sample age through collecting and comparing the ores in the same area.
Description
Technical Field
The invention relates to the technical field of the earth science, in particular to a method for analyzing an apatite fission track for definite years.
Background
Apatite is a phosphate-containing mineral in which phosphorus and calcium are rarely captured by neutrons in nature and form fission tracks. The apatite fission track dating technology is an effective geological dating method and is widely applied to the fields of geology, ore deposit science, volcanics, ancient biology and the like. Common methods for determining the year of a fission track include rock specimen slice preparation, microscopic observation, image analysis and the like. However, in the existing method for determining the fissile track years, the problems of sample cross contamination, manual scale error and the like exist in the preparation process and the microscopic examination process, meanwhile, in different geological environments, the factors can influence the accuracy of the method for determining the fissile track of the apatite, and therefore the method for determining the fissile track of the apatite is provided.
Disclosure of Invention
The invention aims to provide a method for analyzing apatite fission tracks for definite years, which aims to solve the problems in the background technology.
To achieve the above object, there is provided a method for dating analysis of apatite fission tracks, comprising the steps of:
s1, collecting an ore sample in a defined range, analyzing the surface of the ore sample, and evaluating a fission track area in the ore sample;
s2, based on the evaluation of the S2 on the cracking track area in the ore sample, cleaning and preprocessing the ore sample, and searching other similar ore samples in the range according to the cracking track area;
s3, image acquisition is carried out on the ore sample and other similar ore samples, and the ore samples are analyzed for a definite year according to the information of the images;
s4, performing similarity comparison and evaluation according to the image information analysis result of the ore sample and the image information analysis result of other similar ores, and judging the annual data of the ore sample according to the evaluation result.
As a further improvement of the technical solution, the step of evaluating the fission track area in the ore sample by S1 is as follows:
s1.1, defining a range according to the influence of a region to be detected on the geological age of the ore;
s1.2, collecting an ore sample in the range, determining a region containing fission tracks on the ore sample through an optical microscopy device, and analyzing the influence of environmental factors in the range on the ore sample.
As a further improvement of the technical scheme, the step of analyzing the influence of the S1.2 on the ore sample is as follows:
s1.2.1, analyzing geological conditions in the range;
s1.2.2, analysing the ambient humidity in this range;
s1.2.3, analysis of the natural radiation background in this range.
As a further improvement of the technical scheme, the steps of analyzing and determining the ore sample by the S1.2 are as follows:
s1.2.4, analyzing the physicochemical characteristics of the ore sample;
s1.2.5 and S1.2.1, S1.2.2, S1.2.3 and S1.2.4, and analyzing the integrated information, and judging the detectable value of the surface fission track area of the ore according to the analysis data.
As a further improvement of the technical scheme, the step of performing the cleaning pretreatment in the step S2 is as follows:
s2.1, judging polishing treatment of the sample according to the detectable value of S1.2.5 on the ore sample;
s2.2, eliminating surface pollution and defects on the surface of the ore sample, and determining selected areas containing fission tracks on the surface of the ore.
As a further improvement of the present technical solution, the step of searching for other similar ore samples in S2 is as follows:
s2.3, collecting other ore samples in the range, and selecting areas of the collected other ore fission track areas;
s2.4, comparing the fission track areas of the other ore samples collected in the S2.3 with the fission track areas selected in the S2.2 in a similarity mode, and determining the other ore samples according to the comparison result.
As a further improvement of the technical scheme, the step of performing image acquisition in S3 is as follows:
s3.1, shooting the ore sample through a laser imaging device, so as to acquire three-dimensional imaging information of the ore sample;
s3.2, shooting other ore samples through a laser imaging device, so as to acquire three-dimensional imaging information of the other ore samples.
As a further improvement of the technical scheme, the step of analyzing the ore sample for a definite time by the S3 comprises the following steps:
s3.3, extracting features of the three-dimensional imaging information obtained in the step S3.1, and calculating and analyzing the extracted features so as to obtain the age of the ore;
and S3.4, extracting features of the three-dimensional imaging information acquired in the step S3.2, and calculating and analyzing the extracted features so as to acquire ages of other ores in the same range.
As a further improvement of the technical scheme, the step of judging the ore sample dating data according to the S4 evaluation result is as follows:
s4.1, combining the characteristic analysis information acquired in the step S3.3 with the characteristic analysis information acquired in the step S3.4 for comparison and evaluation;
s4.2, judging the age accuracy of the ore sample according to the comparison and evaluation result obtained in the step S4.1.
Compared with the prior art, the invention has the beneficial effects that:
in the method for analyzing the apatite fission track for definite years, high-precision quantitative analysis and calculation are carried out on ore samples through three-dimensional imaging, the operation is simpler and more accurate, the factors such as sample cross contamination and manual scale error are greatly reduced, meanwhile, the detection efficiency and the production rate are improved, the ore age is automatically identified and analyzed, the precision is high, the speed is high, the error caused by manual identification is avoided, and a reliable data basis is provided for determining the ore sample age through collecting and comparing the ores in the same area.
Drawings
FIG. 1 is an overall flow diagram of the present invention;
FIG. 2 is a block flow diagram of the present invention for evaluating fissile track areas in an ore sample;
FIG. 3 is a block flow diagram of the present invention for finding other similar ore samples;
FIG. 4 is a block flow diagram of the invention for analyzing a sample of ore over the years based on information from the image;
FIG. 5 is a block flow chart of the invention for determining the age date of the ore sample.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1-5, the present embodiment is directed to a method for analyzing apatite fission tracks for definite years, comprising the steps of:
s1, collecting an ore sample in a defined range, analyzing the surface of the ore sample, and evaluating a fission track area in the ore sample.
The step of evaluating the fission track area in the ore sample by the S1 is as follows:
s1.1, defining a range according to the influence of a region to be detected on the geological age of the ore;
s1.2, collecting an ore sample in the range, determining a region containing fission tracks on the ore sample through an optical microscopy device, and determining the region of the fission tracks of the ore, wherein the operation is required according to the following steps:
samples are prepared and chemically treated to allow for track generation, typically using boric acid or sulfuric acid.
The sample is made into a sheet, and a region with dense tracks in the sheet is selected, carefully observed, and found out to be capable of displaying the fission tracks.
The sample was placed under a microscope and magnification and angle were adjusted to make the fissile track clearly visible.
The length and width of the fissile track are measured using a scale or calibration mark on the microscope to determine the shape and size of the fissile track. By these steps, the region of the ore fission track can be determined; analyzing the influence of environmental factors in the range on the ore sample;
the step of analyzing the influence of S1.2 on the ore sample is as follows:
s1.2.1, analyzing geological conditions in the range; in different geological environments, the rock causes and the degree of deterioration are different, so that the number and the density of fission tracks in a sample can be influenced by geological conditions;
s1.2.2, analysing the ambient humidity in this range; the apatite fission track annual analysis method requires microscope observation, so that the environmental humidity can influence the observation result;
s1.2.3, analysis of the natural radiation background in this range. The natural radiation background existing in the sample can also influence the result of the apatite fission track years analysis, and can cause analysis errors;
the step of analyzing and determining the ore sample by the S1.2 is as follows:
s1.2.4, analyzing the physicochemical characteristics of the ore sample; the physicochemical properties of the sample have important influence on the accuracy of the apatite fission track annual analysis method, such as the oxide content in the sample, the grinding method, the grinding force and the like;
s1.2.5, integrating and analyzing the integrated information by combining with s1.2.1, S1.2.2, S1.2.3 and S1.2.4, and judging the detectable value of the surface fission track area of the ore according to the analysis data, wherein the following environmental factors possibly affect the detectable value of the surface fission track area of the ore:
illumination conditions: illuminance and illumination direction may affect the visibility of the ore surface fission track when observed. The higher the luminance, the better the finding and accuracy of the fission track when observed.
Humidity: higher humidity may lead to unclean evaporation of water from the mineral surface, causing a blurred or unidentified condition.
Temperature: the mineral surface may affect the observation due to a change in the microstructure caused by excessive temperatures.
Dust and gas: dust and gas pollution can affect the quality of the observation and should be kept as isolated as possible.
Mineral sample properties of itself: for example, mineral charcoal and natural graphite samples contain large amounts of black charcoal or refractory viscous liquids, making it difficult to produce high quality samples. In summary, the detectability of the surface fission track area of the ore can be comprehensively evaluated according to the influencing factors of the environmental conditions and the characteristics of the ore sample. In general, temperature, humidity and dust pollution should not be such that the sample is not observable, and observing the fission track of the ore can provide important information about the ore, so that the sample is better understood; all the factors can influence the accuracy and the reliability of the apatite fission track annual analysis method, so that the factors need to be comprehensively considered in the analysis process;
s2, based on the evaluation of the S2 on the cracking track area in the ore sample, cleaning and preprocessing the ore sample, and searching other similar ore samples in the range according to the cracking track area;
the step of cleaning pretreatment of the S2 is as follows:
s2.1, judging the detectable value of the ore sample according to S1.2.5, polishing the sample, cleaning the sample, fusing uranium or preprocessing the sample in other modes, and avoiding impurities from shielding a laser emission route to influence a three-dimensional image fed back by laser imaging;
s2.2, eliminating surface pollution and defects on the surface of the ore sample, determining a selected area containing fission tracks on the surface of the ore, and placing the area under an optical microscope for selecting the area containing the fission tracks;
the step of S2 finding other similar ore samples is as follows:
s2.3, collecting other ore samples in the range, and selecting areas of the collected other ore fission track areas;
s2.4, comparing the fissile track areas of other ore samples collected in the S2.3 with the fissile track areas selected in the S2.2 in a similarity mode, determining other ore samples according to comparison results, wherein the similarity comparison based on fissile track images is one common mode:
preprocessing the two split reducing track images, including denoising, smoothing, binarization and the like, to obtain two binarized images.
And selecting the areas with the same size from the two images for comparison, and traversing the two images by using a sliding window mode for calculation.
For each selected region, the color (black or white) of each pixel is calculated in the two images, resulting in a matrix.
The similarity of two regions is determined by calculating a similarity measure between the two matrices, where common similarity measure methods include euclidean distance, manhattan distance, cosine similarity, etc.
Finally, a similarity comparison score between two regions can be obtained by comparing the similarity of the two regions.
The specific formula may vary depending on the similarity metric method selected, for example, for Euclidean distance, the formula for the similarity comparison score is:
wherein the method comprises the steps ofMatrix of two regions respectively, +.>Representing the sum of all elements in the matrix.
S3, image acquisition is carried out on the ore sample and other similar ore samples, and the ore samples are analyzed for a definite year according to the information of the images;
the step of image acquisition in the S3 is as follows:
s3.1, shooting the ore sample through a laser imaging device, so as to acquire three-dimensional imaging information of the ore sample;
s3.2, shooting other ore samples through a laser imaging device so as to acquire three-dimensional imaging information of the other ore samples, wherein a laser three-dimensional imager with high resolution, such as a Leica DCM8/M. Laser imaging system can be used for obtaining three-dimensional imaging data of the samples by projecting laser on the surfaces of the samples and adopting reflection imaging.
The step of analyzing the ore sample for a definite year in S3 comprises the following steps:
s3.3, extracting features of the three-dimensional imaging information obtained in the step S3.1, and calculating and analyzing the extracted features so as to obtain the age of the ore;
s3.4, extracting features of the three-dimensional imaging information obtained in the step S3.2, calculating and analyzing the extracted features, so as to obtain ages of other ores in the same range, analyzing and processing the obtained imaging data, automatically identifying fission tracks in the apatite, extracting required data and parameters such as track number, track length and the like, inputting the three-dimensional imaging data of the ore sample into a computer system for image identification and analysis, and for the fixed-year analysis of the apatite fission tracks, adopting the following formula:
wherein, the liquid crystal display device comprises a liquid crystal display device,represents the age of the sample (unit is 10-9 years),>representing phosphorus ashNumber density constant of fission tracks in stone, +.>Indicating the number density of fission tracks in the selected standard wear state, +.>Representing the fissile track number density of the current sample. Prior to inputting the three-dimensional imaging data of the sample into the computer system, the sample needs to be subjected to sample preparation and processing to obtain an optical image under the microscopic imaging system. After image analysis, the number density of the crack tracks in the sample can be obtained>The value is then calculated using the above formula, thereby obtaining an age value of the sample.
S4, performing similarity comparison and evaluation according to the image information analysis result of the ore sample and the image information analysis result of other similar ores, and judging the annual data of the ore sample according to the evaluation result.
The step of judging the ore sample annual data according to the S4 evaluation result is as follows:
s4.1, combining the characteristic analysis information acquired in the step S3.3 with the characteristic analysis information acquired in the step S3.4 for comparison and evaluation;
s4.2, according to the comparison and evaluation result obtained in the S4.1, comparing the ore sample data information of the same area can adopt the following formula, namely a Boolean variance formula:
wherein, the liquid crystal display device comprises a liquid crystal display device,representing sample variance +.>Indicate->Measurement of individual samples, +.>Mean value of all samples, +.>Representing the number of samples.
For apatite fission track annual analysis, ore samples collected in the same area should be selected for comparison to obtain a sample set. Then in the sample set, fission track counting is independently performed for each sample to obtain the number of fission tracks of the sample, thereby obtaining the age of each sample. Then, the variance of the sample is calculated using the above formula, thereby obtaining an accurate value for the sample set. When the number of samples is large, a finer method, such as a Median Absolute Deviation (MAD) as a robust estimator, or a non-parametric resampling method such as bootstrap, can be used to obtain more accurate results, thereby judging the age accuracy of the ore sample
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A method for dating analysis of apatite fission tracks, characterized by: the method comprises the following steps:
s1, collecting an ore sample in a defined range, analyzing the surface of the ore sample, and evaluating a fission track area in the ore sample;
s2, based on the evaluation of the S2 on the cracking track area in the ore sample, cleaning and preprocessing the ore sample, and searching other similar ore samples in the range according to the cracking track area;
s3, image acquisition is carried out on the ore sample and other similar ore samples, and the ore samples are analyzed for a definite year according to the information of the images;
s4, performing similarity comparison and evaluation according to the image information analysis result of the ore sample and the image information analysis result of other similar ores, and judging the annual data of the ore sample according to the evaluation result.
2. The method for dating analysis of apatite fission tracks according to claim 1, wherein: the step of evaluating the fission track area in the ore sample by the S1 is as follows:
s1.1, defining a range according to the influence of a region to be detected on the geological age of the ore;
s1.2, collecting an ore sample in the range, determining a region containing fission tracks on the ore sample through an optical microscopy device, and analyzing the influence of environmental factors in the range on the ore sample.
3. The method for dating analysis of apatite fission tracks according to claim 1, wherein: the step of analyzing the influence of S1.2 on the ore sample is as follows:
s1.2.1, analyzing geological conditions in the range;
s1.2.2, analysing the ambient humidity in this range;
s1.2.3, analysis of the natural radiation background in this range.
4. A method according to claim 3, characterized in that: the step of analyzing and determining the ore sample by the S1.2 is as follows:
s1.2.4, analyzing the physicochemical characteristics of the ore sample;
s1.2.5 and S1.2.1, S1.2.2, S1.2.3 and S1.2.4, and analyzing the integrated information, and judging the detectable value of the surface fission track area of the ore according to the analysis data.
5. The method for the dating analysis of apatite fission tracks according to claim 4, wherein: the step of cleaning pretreatment of the S2 is as follows:
s2.1, judging polishing treatment of the sample according to the detectable value of S1.2.5 on the ore sample;
s2.2, eliminating surface pollution and defects on the surface of the ore sample, and determining selected areas containing fission tracks on the surface of the ore.
6. The method for the dating analysis of apatite fission tracks according to claim 5, wherein: the step of S2 finding other similar ore samples is as follows:
s2.3, collecting other ore samples in the range, and selecting areas of the collected other ore fission track areas;
s2.4, comparing the fission track areas of the other ore samples collected in the S2.3 with the fission track areas selected in the S2.2 in a similarity mode, and determining the other ore samples according to the comparison result.
7. The method for dating analysis of apatite fission tracks according to claim 1, wherein: the step of image acquisition in the S3 is as follows:
s3.1, shooting the ore sample through a laser imaging device, so as to acquire three-dimensional imaging information of the ore sample;
s3.2, shooting other ore samples through a laser imaging device, so as to acquire three-dimensional imaging information of the other ore samples.
8. The method for dating analysis of apatite fission tracks as claimed in claim 7, wherein: the step of analyzing the ore sample for a definite year in S3 comprises the following steps:
s3.3, extracting features of the three-dimensional imaging information obtained in the step S3.1, and calculating and analyzing the extracted features so as to obtain the age of the ore;
and S3.4, extracting features of the three-dimensional imaging information acquired in the step S3.2, and calculating and analyzing the extracted features so as to acquire ages of other ores in the same range.
9. The method for dating analysis of apatite fission tracks as claimed in claim 8, wherein: the step of judging the ore sample annual data according to the S4 evaluation result is as follows:
s4.1, combining the characteristic analysis information acquired in the step S3.3 with the characteristic analysis information acquired in the step S3.4 for comparison and evaluation;
s4.2, judging the age accuracy of the ore sample according to the comparison and evaluation result obtained in the step S4.1.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117783258A (en) * | 2024-01-05 | 2024-03-29 | 中国地质科学院地质力学研究所 | Method for analyzing apatite fission track LA-ICP-MS for definite years |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117783258A (en) * | 2024-01-05 | 2024-03-29 | 中国地质科学院地质力学研究所 | Method for analyzing apatite fission track LA-ICP-MS for definite years |
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