CN116519906B - Lithologic geochemical branching gene LG11 and construction method and application thereof - Google Patents
Lithologic geochemical branching gene LG11 and construction method and application thereof Download PDFInfo
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- 108090000623 proteins and genes Proteins 0.000 title claims abstract description 80
- 238000010276 construction Methods 0.000 title claims abstract description 11
- 239000011435 rock Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910052770 Uranium Inorganic materials 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 6
- 229910052720 vanadium Inorganic materials 0.000 claims description 6
- 230000002068 genetic effect Effects 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000013049 sediment Substances 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000013507 mapping Methods 0.000 abstract description 4
- 239000002689 soil Substances 0.000 abstract description 4
- 238000011160 research Methods 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 2
- 239000010438 granite Substances 0.000 description 7
- 235000019738 Limestone Nutrition 0.000 description 6
- 239000006028 limestone Substances 0.000 description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 239000010459 dolomite Substances 0.000 description 3
- 229910000514 dolomite Inorganic materials 0.000 description 3
- 239000010454 slate Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 101150090724 3 gene Proteins 0.000 description 1
- 101150033839 4 gene Proteins 0.000 description 1
- 240000000489 Agave utahensis Species 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 206010013883 Dwarfism Diseases 0.000 description 1
- 241000398751 Lithogenes Species 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
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- 239000003181 biological factor Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- -1 sandstone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention discloses a lithologic geochemical branching gene LG11, a construction method thereof and application thereof in classification of geological samples with lithologic geochemical gene classification LG_CR of 11 type. The lithology geochemistry branch gene (named LG 11) constructed by the invention can be used for further classifying the lithology geochemistry gene classification LG_CR 11 type geological sample in detail based on the feature similarity of the lithology geochemistry branch gene; compared with geological mapping, the method is suitable for wider geological samples such as rock, soil and water system sediments, lake sediments, river sediments and the like, has wide application prospect, and is a good technical supplement especially when mapping coverage areas of bedrock outcrop which does not develop; meanwhile, the method can greatly improve the tracing precision when tracing the 11-type geological sample, and can greatly improve the working efficiency by obviously reducing the tracing area, so that the classification of the geological sample plays a better role in the tracing research of the geological sample.
Description
Technical Field
The invention relates to the technical field of classification of geological samples, in particular to a lithologic geochemical branching gene LG11, a construction method and application thereof.
Background
The LG01 and LG03 litho-geochemical genes can classify geologic samples. Currently, two digits are generally used to express the classification result of LG01 and LG03, the classification result of LG01 is placed at the first place, and the classification result of LG03 is placed at the second place, so that geological samples can be theoretically classified into 9 types, namely 11, 12, 13, 21, 22, 23, 31, 32 and 33 types, based on lithology genes LG01 and LG 03. The classification technique can be applied to classification of geological samples such as rock, soil, sediment and the like.
However, geologic samples of type 11 (acid-like component) based on lg_cr classification are widely available in nature, and it is often the case that most of the samples of the study area are type 11. In order to classify the geologic samples in more detail in order to play a better role in the traceability study of the geologic samples, it is necessary to construct a new lithologic geochemical branching gene for the 11-type samples in order to classify the 11-type geologic samples in further detail based on the feature similarity of the lithologic branching gene.
Disclosure of Invention
The invention aims to solve the problem that the LG_CR classification 11 type geological samples cannot be classified in further detail in the prior art, and provides a lithologic geochemical branching gene LG11 and a construction method and application thereof.
In order to solve the technical problems, the invention adopts the following technical scheme: a construction method of lithologic geochemical branching gene LG11 comprises the following steps:
s1, al 2 O 3 、Fe 2 O 3 A total of 11 elements, ti, mn, zr, nb, th, U, pb, V, co, construct a branched lithologic geochemical gene LG11;
s2, based on the Chinese lithology geochemistry gene classification LG_CR all belongs to 11 typesLithology element abundance data, determining Al 2 O 3 、Fe 2 O 3 Gene references of Ti, mn, zr, nb, th, U, pb, V, co are 14.8%, 3.5%, 2580. Mu.g/g, 525. Mu.g/g, 185. Mu.g/g, 14.8. Mu.g/g, 14.4. Mu.g/g, 2.4. Mu.g/g, 19. Mu.g/g, 43. Mu.g/g and 5.3. Mu.g/g, respectively;
s3, the sequence of 11 elements for constructing the branched lithology geochemical gene LG11 is as follows: v, zr, ti, nb, al 2 O 3 、Th、Mn、U、Fe 2 O 3 、Pb、Co。
Preferably, fe in S2 2 O 3 For TFe 2 O 3 。
The invention also provides the lithologic geochemical branching gene LG11 constructed by the construction method.
The invention also provides application of the lithologic geochemical branching gene LG11, which is used for classifying geological samples with lithologic geochemical gene classification LG_CR of 11 type, and the classification method comprises the following steps: calculating the gene coding and alkaline similarity of the 11-type geological sample, and dividing the 11-type geological sample into 3 subtypes according to the lithologic geochemical branching gene LG11, wherein the subtypes are respectively represented as 111 type, 112 type and 113 type; that is, the lithology gene classification result lg_cr of the 11-type geological sample is represented by a three-digit number, and the classification results of lithology genes LG01, LG03 and LG11 are respectively from the first to the third digits.
Preferably, the genetic code and the calculation of the alkaline similarity of the geological sample of which the lithologic geochemical gene classification lg_cr is type 11 are the same as those of the parent genes LG01 and LG 03.
Preferably, the alkaline similarity is: similarity of LG11 gene to gene 12020202020 for type 11 geologic samples; based on the alkaline similarity R Alkali Dividing the 11-type geological sample into 3 subtypes, namely 1 type, corresponding to R Alkali More than or equal to 80 percent; type 2, corresponding to 20%<R Alkali <80%; type 3, corresponding to R Alkali Less than or equal to 20 percent; and taking the result of the alkaline similarity classification as the third position of the lithology gene classification result LG_CR of the 11-type geological sample.
The invention has the beneficial effects that:
the invention constructs a new lithology geochemical branching gene (named LG 11), and can further classify the lithology geochemical gene classification LG_CR 11 type geological sample in detail based on the feature similarity of the lithology geochemical branching gene; compared with geological mapping, the method is suitable for wider geological samples such as rock, soil and water system sediments, lake sediments, river sediments and the like, has wide application prospect, and is a good technical supplement especially when mapping coverage areas of bedrock outcrop which does not develop.
And secondly, the lithologic geochemical branching gene (named LG 11) constructed by the invention can obviously improve the tracing precision when tracing the 11-type geological sample, and can greatly improve the working efficiency by obviously reducing the tracing area, so that the classification of the geological sample plays a better role in the tracing research of the geological sample.
Drawings
FIG. 1 is a diagram showing the results of classification of litho-geochemical genes (LG_CR) and geology of the southern region in south China Kaolin in example 3 of the present invention.
In the figure: 1-fourth series river phase sediments, 2-chalky sandstone, meteoron, 3-dwarfism mudstone, sandstone, 4-trilobate sandstone, mudstone, 5-binary limestone, sandstone, mudstone, 6-carbo-binary dolomite, limestone, mudstone, 7-carbo limestone, dolomite, shale, 8-mud pot-carbo sandstone, limestone, 9-mud carbo limestone, dolomite, sandstone, 10-cold limestone, sandstone, slate, 11-new ancient slate, siliceous rock, sandstone, 12-granite, 13-binary granite, 14-granite, 15-granite flash rock, 16-granite flash rock, 17-positive rock, 18-fault, 19-lithology border, 20-granite: (1) -flower mountain, (2) -girl mountain, (3) -graminea, (4) -Lianyang, (5) -Dadongshan, (6) -Guidong.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Example 1 construction of litho-geochemical branching gene LG11
From construction LG01 and11 elements from 16 relatively inactive elements of the LG03 lithology gene were selected as elements for constructing the branched lithology geochemical gene LG11. SiO is eliminated based on the reason influenced by biological factors 2 And P, removing La element based on relatively active reasons in the weathering process, removing Cr and Ni elements based on relatively rich (or repetition-avoiding) reasons of relatively rich elements in the genetic rock, and finally selecting 11 elements (including elements and oxides) Al 2 O 3 、Fe 2 O 3 Ti, mn, zr, nb, th, U, pb, V, co to construct a branched litho-geochemical gene LG11.
For the 11 selected elements or oxides, determining gene reference values of the 11 elements based on 88 pieces of Chinese magical rock element abundance data of which lithologic geochemical gene classification (LG_CR) belongs to 11 types. The element sequence of LG11 branch genes is determined based on the exploration and inspection of the weathering section samples of 11-type magma rock of different weather zones in China, and the branch lithology geochemistry gene LG11 is finally constructed, wherein the element sequence and the reference value are shown in the table 1.
TABLE 1 element ordering of branched lithology geochemical gene LG11 and reference value thereof
Note that: the content unit of oxide is presented as mug/g, and the content unit of element is presented as mug/g.
Example 2 classification of geological samples by the lithologic geochemical branching gene LG11
In this example, different rock, soil and water sediments from the Nanling area are collected as samples, and the samples are numbered as samples 1-5, and the geological samples 1-5 are further classified by the lithologic geochemical branching gene LG11 constructed in example 1.
(1) The sample is subjected to geochemical composition test, and the 16 elements or oxides are SiO 2 、Al 2 O 3 、Fe 2 O 3 Ti, P, mn, zr, nb, th, U, pb, la, V, cr, co, ni. The results of the test are shown in Table 2Shown.
TABLE 2 elemental content of geological samples
Note that: oxide content unit is%and element content unit is μg/g, fe here 2 O 3 Representing TFe 2 O 3 。
(2) The gene codes of lithology genes LG01 and LG03 of the samples were calculated based on these 16 element or oxide contents, and the results are shown in table 3.
TABLE 3 Gene encoding of geological samples
(3) Based on the gene codes of the samples, the acid similarity of lithology genes LG01 and LG03 was calculated, respectively, and the results are shown in table 4.
TABLE 4 Gene encoding of geologic samples
Note that: the unit of gene similarity is%.
(4) Samples were classified based on lithology genes LG01 and LG03, and the classification code at this time was two digits, as shown in table 5.
TABLE 5 lithology Gene classification results of geological samples (LG_CR)
As shown in the lithology gene classification result (LG_CR) of Table 5, the LG_CR codes two digits, and samples 1-3 are 11-type geological samples.
(5a) For geologic samples 1-3 classified into 11 type by LG_CR obtained in step (4), the gene coding, the alkaline similarity and the classification result of LG11 are calculated to achieve the purpose of further detailed classification, and the result is shown in Table 6.
TABLE 6 lithology Gene correlation calculation results for geological samples 1-3
As shown in table 6, lg_cr (1) is LG01 and LG03 based lg_cr encoding of geologic samples 1-3, which is a two digit number; LG_CR (2) is LG01, LG03 and LG11 based LG_CR coding of geologic samples 1-3, three digits, wherein the 3 rd digit is based on the alkaline similarity R Alkali Type 11 geological samples were divided into 3 subtypes.
(5b) For samples of types 12, 13, 21, 22, 23, 31, 32, 33 other than type 11, the present invention does not classify in detail, but is supplemented with 0 after encoding to represent three digits, as shown in table 7.
TABLE 7 lithology Gene correlation calculations for geological samples
LG_CR as shown in Table 7 ① Lg_cr encoding based on LG01 and LG03 is two digits; LG_CR ② Lg_cr codes for LG01, LG03 and LG11 are three digits; calculation of this parameter is not applicable on behalf of samples 4 and 5.
Example 3 classification of geological samples by the lithologic geochemical branching gene LG11
In this example, the water-based sediment in the south-middle region of south China was used as a sample. The lithologic geochemical genes LG01, LG03 and LG11 of the samples were calculated based on the regional 1:200000 regional aqueous detection sediment survey data, and the classification result (LG_CR) of the regional lithologic geochemical genes on the samples was shown in FIG. 1b when the calculation method was the same as in example 2. In FIG. 1b, the type 11 samples of the study area are further divided into types 111, 112 and 113. The branching genes of type 12, type 21, type 22 and type 23 are not further constructed and are divided in FIG. 1b, so the third digit is complemented with 0 in the classification result, i.e. denoted 120, 210, 220 and 230, respectively.
The classification results are shown in fig. 1a when LG01 and LG03 litho-geochemical genes of the samples of this example were calculated using the prior art (wuy., gong Q.J., liuN.Q., wuX., yanT.T., xu S.C., liW.J.,2022.Classificationofgeologicalmaterials on geochemical lithogenes:Illustration onacase study in Gejiu areaofYunnanProvince,China.Appl.Geochem.146,105460). In fig. 1a, the study area is mostly of type 11, which is too general for the classification of geological samples and the tracing of samples in the area.
FIG. 1c is a simplified geological map of the region. Comparing fig. 1b and 1c, it can be seen that the result of type 111 division is almost identical in spatial distribution to the granite body of the zone, type 112 is almost identical in spatial distribution to the exposed stratum of the zone, and type 113 is hardly exposed in the investigation zone, and is only partially exposed as an intermediate transition zone of types 112 and 120. This classification result effectively classifies the type 11 sample of the zone further, and its lithologic geochemical classification result based on water-based sediments is consistent with the geological map result of the zone based on the outcrop of surface rocks.
In conclusion, the invention constructs a novel lithologic geochemical branching gene LG11, which can be used for further classifying the geological sample with lithologic geochemical gene classification LG_CR of 11 type in detail, so that the classification of the geological sample plays a better role in the traceability research of the geological sample.
The specification and figures are to be regarded in an illustrative rather than a restrictive sense, and one skilled in the art, in light of the teachings of this invention, may make various substitutions and alterations to some of its features without the need for inventive faculty, all being within the scope of this invention.
Claims (6)
1. The construction method of lithologic geochemical branching gene LG11 is characterized by comprising the following steps:
s1, al 2 O 3 、Fe 2 O 3 A total of 11 elements, ti, mn, zr, nb, th, U, pb, V, co, construct a branched lithologic geochemical gene LG11;
s2, determining Al based on magma rock element abundance data of all 11 types of the LG_CR of the Chinese lithology geochemistry gene classification 2 O 3 、Fe 2 O 3 Gene references of Ti, mn, zr, nb, th, U, pb, V, co are 14.8%, 3.5%, 2580. Mu.g/g, 525. Mu.g/g, 185. Mu.g/g, 14.8. Mu.g/g, 14.4. Mu.g/g, 2.4. Mu.g/g, 19. Mu.g/g, 43. Mu.g/g and 5.3. Mu.g/g, respectively;
s3, the sequence of 11 elements for constructing the branched lithology geochemical gene LG11 is as follows: v, zr, ti, nb, al 2 O 3 、Th、Mn、U、Fe 2 O 3 、Pb、Co。
2. The method according to claim 1, wherein Fe in S2 2 O 3 For TFe 2 O 3 。
3. The lithologic geochemical branching gene LG11 constructed by the construction method according to claim 1 or 2.
4. The application of lithologic geochemical branching gene LG11 is characterized in that the application is used for classifying geological samples with lithologic geochemical gene classification LG_CR of 11 type, and the classification method is as follows: calculating the similarity of gene codes and alkalinity of the 11-type geological sample, dividing the 11-type geological sample into 3 subtypes according to the lithologic geochemical branching gene LG11 of claim 3, wherein the subtypes are respectively represented as 111 type, 112 type and 113 type; that is, the lithology gene classification result lg_cr of the 11-type geological sample is represented by a three-digit number, and the classification results of lithology genes LG01, LG03 and LG11 are respectively from the first to the third digits.
5. The use according to claim 4, wherein the calculation of the genetic code and the alkaline similarity of the geological sample of type 11 of the lithogeochemical genetic classification lg_cr is identical to the method of the parent genes LG01 and LG 03.
6. The use according to claim 4, wherein the basic similarity is: similarity of LG11 gene to gene 12020202020 for type 11 geologic samples; based on the alkaline similarity R Alkali Dividing the 11-type geological sample into 3 subtypes, namely 1 type, corresponding to R Alkali More than or equal to 80 percent; type 2, corresponding to 20%<R Alkali <80%; type 3, corresponding to R Alkali Less than or equal to 20 percent; and taking the result of the alkaline similarity classification as the third position of the lithology gene classification result LG_CR of the 11-type geological sample.
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