CN116482212A - Method for restraining Carlin type gold deposit ore age by using fault layer type ancient oil reservoir - Google Patents
Method for restraining Carlin type gold deposit ore age by using fault layer type ancient oil reservoir Download PDFInfo
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- CN116482212A CN116482212A CN202310278212.5A CN202310278212A CN116482212A CN 116482212 A CN116482212 A CN 116482212A CN 202310278212 A CN202310278212 A CN 202310278212A CN 116482212 A CN116482212 A CN 116482212A
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000010931 gold Substances 0.000 title claims abstract description 38
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000000452 restraining effect Effects 0.000 title claims abstract description 6
- 239000010426 asphalt Substances 0.000 claims abstract description 56
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 46
- 239000011707 mineral Substances 0.000 claims abstract description 46
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 34
- 238000011160 research Methods 0.000 claims abstract description 15
- 238000004458 analytical method Methods 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000009826 distribution Methods 0.000 claims abstract description 5
- 238000002224 dissection Methods 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims abstract description 4
- 239000011435 rock Substances 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 11
- 239000000523 sample Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- 230000004075 alteration Effects 0.000 claims description 6
- 229930195733 hydrocarbon Natural products 0.000 claims description 6
- 150000002430 hydrocarbons Chemical class 0.000 claims description 6
- 238000005065 mining Methods 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 238000011835 investigation Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 208000035126 Facies Diseases 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 238000013508 migration Methods 0.000 claims description 3
- 230000005012 migration Effects 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000002310 reflectometry Methods 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000009897 systematic effect Effects 0.000 abstract 1
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 13
- 239000007789 gas Substances 0.000 description 8
- 239000005083 Zinc sulfide Substances 0.000 description 6
- 229910052702 rhenium Inorganic materials 0.000 description 5
- 229910052984 zinc sulfide Inorganic materials 0.000 description 5
- 239000003085 diluting agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052762 osmium Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 230000033558 biomineral tissue development Effects 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000003811 acetone extraction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- MJLGNAGLHAQFHV-UHFFFAOYSA-N arsenopyrite Chemical compound [S-2].[Fe+3].[As-] MJLGNAGLHAQFHV-UHFFFAOYSA-N 0.000 description 1
- 229910052964 arsenopyrite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/622—Ion mobility spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/626—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas
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Abstract
The invention discloses a method for restraining a Carlin type gold deposit ore age by using a fault layer type ancient oil deposit, which comprises the following key steps: s1: fine dissection of ancient reservoirs and Carlin gold deposits; s2: geochemical research of ancient oil reservoirs; s3: adult mineral study; s4: comprehensive research in the mineral formation and storage era; the invention combines the research of the Carlin type gold deposit ore formation times in the southwest and Qian area with the multi-period reservoir formation events of the ancient oil reservoir, systematically develops the isotope geochemistry and Re-Os chronology research of asphalt with different periods and different causes in the Kalin type gold deposit ore formation times in the Kalin type basin, explores a method for analyzing the distribution rule of metal and oil gas mineral products in the deposit basin, is a method which has no systematic relation to the new method, and has breakthrough significance for the Kalin type gold deposit formation research in the Kalin type basin in the Kalin type. Meanwhile, an asphalt Re-Os method is adopted in the analysis technology, the age of the mineral deposit in the south China river basin is used as a natural scale, the limit of the latest mineral deposit age of the gold deposit in the south China river basin is realized, and the method has obvious innovation.
Description
Technical Field
The invention belongs to the technical field of land mine exploration, and particularly relates to a method for restricting a Carlin type gold deposit ore formation era by using a fault layer type ancient oil reservoir.
Background
Deposit chronology is crucial for the cause of deposit decomposition and the background of the mineralogy thereof, however, due to the limitations of an analysis method and the lack of suitable yearly minerals, deposit basins have generally undergone multiple evolutions, and deposit basin metal deposit causes are continuously controversial. Different scholars adopt different testing methods aiming at different year objects, and the obtained results have larger difference.
Carlin gold deposit and many paleoreservoirs which are located in the northwest of the basin of the south-China river are important features, and the coexistence enrichment of the gold deposit and the paleoreservoirs reflects that the ore formation and the ore formation have close cause connection, and the gold deposit and the paleoreservoirs are both products of the action of basin organic ore-forming fluid. Therefore, the synergistic exploration and comprehensive prediction of metal and oil-gas mineral resources have very important scientific and practical significance.
Disclosure of Invention
The patent adopts the technical means of rock (ore) Dan Xianwei lithology structure, C-isotope organic geochemistry, asphalt Re-Os definite year and the like, the fault type ancient oil reservoir research widely developed in the reservoirs of the south China river is developed systematically, and compared with the Carlin type gold ore of the sedimentary rock-containing ore in the region, the latest ore formation age of the Carlin type gold ore is limited, the understanding of the ore formation process and mechanism of the Carlin type gold ore of the south China river basin is further deepened, the distribution rule of metal and oil gas minerals in the sedimentary basin is explored, and the theoretical system of the basin fluid ore formation-reservoir effect is enriched and perfected.
In order to achieve the technical purpose, the invention is realized by the following technical scheme:
a method for restraining Carlin type gold deposit ore age by using a fault layer type ancient oil deposit comprises the following steps:
s1: fine dissection of paleo-reservoirs and kalin-type gold deposits: through field geological investigation of stratum and structure, the three-dimensional space distribution rules of paleo-reservoir, gold ore deposit, paleo-bulge, unconformity, controlled ore fracture and volcanic facies are ascertained by combining with fine observation of the existing drilling, developing engineering and mining engineering; researching the material composition, the structure and the alteration characteristics of surrounding rock of the ore and the asphalt, and judging the generation relation of the mineral substances such as gold and the asphalt; using an electron microscope and an electron probe to find out the component change and alteration characteristics of asphalt with different periods and different causes in the reservoirs of the south-the-earth river basin, selecting mineral samples and asphalt samples, and laying a foundation for the research of the mineral formation and reservoir relation; if the bitumen and ore minerals have closely intergrowth or concomitant characteristics in space, and the fact that the bitumen and ore minerals have inter-inclusions, then this indicates that the mineral-forming fluid forming the metal minerals and the fluid forming the paleo-hydrocarbon reservoir may be homologous fluids; if the asphalt and ore minerals have obvious penetrating and cutting relation in space and large difference in material composition, the asphalt and ore minerals are indicated to be possibly different sources, and the forming and ore minerals have obvious precedence relation;
s2: geochemical study of ancient reservoirs: the reflectivity, the organic element content, the carbon isotope, the sulfur isotope, the asphalt solubility, the microelements and the rare earth elements of asphalt in two types of filling hydrocarbons in a research area are analyzed and tested, and compared with the rock geochemistry in the Qian southwest area; as a result of the analysis and test, the composition of the stable isotope (C, S) is similar to that of the regional stratum rock, and the content (or ratio) of the trace and rare earth elements is similar, so that the ancient oil reservoir and the regional stratum are indicated to have the same material source; if the difference between the two is large, the formation of the paleo-reservoir is indicated to be irrelevant to the regional stratum, and the regional stratum is only a channel for later migration and reservoir formation;
s3: adult mineral study: in the ancient oil deposit, selecting asphalt with obvious growth relation with mineral rock, carrying out Re-Os isotope measurement on the asphalt, and determining a time lineage formed by gold deposit and the ancient oil deposit;
s4: comprehensive study of the mineral formation and storage times: comprehensively analyzing the thermal evolution degree of asphalt with different periods and different causes in reservoirs of the south-plate river basin, and indicating the age of raw oil and reservoir; and the latest ore formation age is limited by combining with the actual geological condition and comparing with the chronology data of Carlin type gold ores of sedimentary rock-holding ores in a research area.
Preferably, the organic elements in S2 include C, H, O, N;
the beneficial effects of the invention are as follows:
the invention adopts asphalt Re-Os method in analysis technology, takes the age of the collection as natural scale, realizes the limit of the latest mineral age of each gold deposit in the south China river basin, and has obvious innovation.
By using the method, the primary Re-Os isotope year measurement is carried out on the asphalt of the second period of development of the muddy ditch mining area, the result is unequal from 105.62 to 59+/-27 Ma through Rb-Sr, pyrite, arsenopyrite and other Re-Os year measurement; in field investigation, the gold ore formation effect is found to occur before the fracture layer type ancient oil reservoir is cracked, so that the upper limit of the ore formation age of the gold ore deposit in the defined mushy ditch is less than 172.7+/-6 Ma.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a product of stage II bitumen-fault ancient cracking;
fig. 2 is a view of the lead zinc sulfide mineralization of bitumen in the rock-brecciated grids in gravel and gravel in gold-top mining areas.
Detailed Description
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.
Example 1
The implementation technical scheme of the invention is as follows: the method for restraining the Carlin type gold deposit ore age by using the fault layer type ancient oil deposit comprises the following steps:
s1: fine dissection of paleo-reservoirs and kalin-type gold deposits: through field geological investigation of stratum and structure, the three-dimensional space distribution rules of paleo-reservoir, gold ore deposit, paleo-bulge, unconformity, controlled ore fracture and volcanic facies are ascertained by combining with fine observation of the existing drilling, developing engineering and mining engineering; researching the material composition, the structure and the alteration characteristics of surrounding rock of the ore and the asphalt, and judging the generation relation of the mineral substances such as gold and the asphalt; using an electron microscope and an electron probe to find out the component change and alteration characteristics of asphalt with different periods and different causes in the reservoirs of the south-the-earth river basin, selecting mineral samples and asphalt samples, and laying a foundation for the research of the mineral formation and reservoir relation; if the bitumen and ore minerals have closely intergrowth or concomitant characteristics in space, and the fact that the bitumen and ore minerals have inter-inclusions, then this indicates that the mineral-forming fluid forming the metal minerals and the fluid forming the paleo-hydrocarbon reservoir may be homologous fluids; if the asphalt and ore minerals have obvious penetrating and cutting relation in space and large difference in material composition, the asphalt and ore minerals are indicated to be possibly different sources, and the forming and ore minerals have obvious precedence relation;
s2: geochemical study of ancient reservoirs: the reflectivity, the organic element content, the carbon isotope, the sulfur isotope, the asphalt solubility, the microelements and the rare earth elements of asphalt in two types of filling hydrocarbons in a research area are analyzed and tested, and compared with the rock geochemistry in the Qian southwest area; as a result of the analysis and test, the composition of the stable isotope (C, S) is similar to that of the regional stratum rock, and the content (or ratio) of the trace and rare earth elements is similar, so that the ancient oil reservoir and the regional stratum are indicated to have the same material source; if the difference between the two is large, the formation area stratum of the paleo-reservoir is indicated to be irrelevant, and the area stratum is only a channel for later migration and reservoir formation;
s3: adult mineral study: in the ancient oil deposit, selecting asphalt with obvious growth relation with mineral rock, carrying out Re-Os isotope measurement on the asphalt, and determining a time lineage formed by gold deposit and the ancient oil deposit;
s4: comprehensive study of the mineral formation and storage times: comprehensively analyzing the thermal evolution degree of asphalt with different periods and different causes in reservoirs of the south-plate river basin, and indicating the age of raw oil and reservoir; and the latest ore formation age is limited by combining with the actual geological condition and comparing with the chronology data of Carlin type gold ores of sedimentary rock-holding ores in a research area.
Preferably, the organic elements in S2 include C, H, O, N;
example 2
Based on example 1, the gold-capped lead zinc mining area cloud Dragon group (E 1 y) contains conglomerates and grits, for example, which lead zinc sulphide corner pebbles grid in which bitumen is extensively developed (figure 2). The purity of the sampled product is checked for 0.5-1.0 mm asphalt particles by particle under a binocular entity microscope, and particles with intergrowth or other impurity minerals mixed in are removed, so that the asphalt purity of the sample reaches more than 99.5 percent; then, the sample is cleaned in ultrasonic wave to remove impurities such as dust adsorbed on the surface of the asphalt sample for years of measurement. Accurately weighing 0.2g of prepared asphalt sample, transferring into a Carius tube, adding oxidant (3 mL hydrochloric acid, 5mL nitric acid)1mL hydrogen peroxide) and a diluent, and sealing the solution at 200 ℃ for 24 hours. Separating Os by distillation, and separating Re by acetone extraction. Re and Os preparation solutions were analyzed by HR-element2-ICP-MS, and the analysis results are shown in Table 1. Uncertainty in Re, os content includes sample and diluent weighing errors, isotope composition errors, diluent calibration errors, fractionation correction errors for mass spectrometry, and isotope ratio errors of the sample to be analyzed. The blank average Re of the whole procedure was 4pg, the common Os was 0.3pg, 187 os is 0.03pg. The Re and Os contents in the blank relative samples are negligible. Re content in the asphalt sample was 71.30X10 -9 ～404.4×10 -9 Between, common Os and 187 the content of Os is 0.0487 ×10 respectively -9 ～1.027×10 -9 And 0.1028 ×10 -9 ～0.9646×10 -9 。
Re and Os isotope composition analysis data (table 1) of asphalt in gold-top lead-zinc sulfide ore are processed by isoplot software to obtain the Re-Os isotope isochronal age of the gold-top asphalt of 68+/-5 Ma, 187 Os/ 188 the initial ratio of Os was 4±1, mswd=9.2.
TABLE 1 Re, os isotope composition analysis result data of asphalt in gold-top lead-zinc ore
The ancient oil and gas reservoir represented by the asphalt sample of the current year of measurement belongs to the same era as the reservoir, namely the ancient and new cloud dragon group; the mineralization of the lead-zinc sulfide on the gold top takes the cloud dragon group oil-gas reservoir as main rock, and generates an ore effect after remarkable hydrothermal exchange, and reflects that the oil-gas reservoir is advanced in lead-zinc ore formation. The great amount of hydrogen sulfide generated by thermochemical reduction of sulfate by organic matters in the hydrocarbon reservoir lays a chemical material foundation for reduction of lead-zinc sulfide precipitation, metal ions which are injected into the hydrocarbon reservoir with gold tops from the deep part along the fracture of the river are likely to react with the hydrogen sulfide in a rapid and concentrated way, so that the lead-zinc sulfide is greatly precipitated to form ores, and the hydrocarbon reservoir and the lead-zinc ores are likely to be dynamic processes which continuously occur successively.
The Re-Os isochronal age of asphalt in the gold-top ultra-large ore which takes the ancient and new cloud dragon group containing conglomerates and gritties as main rock lead zinc ore is 68+/-5 Ma, which indicates Jin Dinggu oil and gas reservoir age. Oil gas reservoir formation and lead-zinc reservoir formation are likely to be successive geological processes in the gold-topped mine of Yunnan, the reservoir formation is a reservoir formation foundation, and the reservoir formation is accompanied by the destruction of the oil gas reservoir. Therefore, the formation time of the gold-top ultra-large lead zinc ore is limited to be later than 68+/-5 Ma.
Claims (2)
1. The method for restraining the Carlin type gold deposit ore age by using the fault layer type ancient oil deposit is characterized by comprising the following steps:
s1: fine dissection of paleo-reservoirs and kalin-type gold deposits: through field geological investigation of stratum and structure, the three-dimensional space distribution rules of paleo-reservoir, gold ore deposit, paleo-bulge, unconformity, controlled ore fracture and volcanic facies are ascertained by combining with fine observation of the existing drilling, developing engineering and mining engineering; researching the material composition, the structure and the alteration characteristics of surrounding rock of the ore and the asphalt, and judging the generation relation of the mineral substances such as gold and the asphalt; using an electron microscope and an electron probe to find out the component change and alteration characteristics of asphalt with different periods and different causes in the reservoirs of the south-the-earth river basin, selecting mineral samples and asphalt samples, and laying a foundation for the research of the mineral formation and reservoir relation; if the bitumen and ore minerals have closely intergrowth or concomitant characteristics in space, and the fact that the bitumen and ore minerals have inter-inclusions, then this indicates that the mineral-forming fluid forming the metal minerals and the fluid forming the paleo-hydrocarbon reservoir may be homologous fluids; if the asphalt and ore minerals have obvious penetrating and cutting relation in space and large difference in material composition, the asphalt and ore minerals are indicated to be possibly different sources, and the forming and ore minerals have obvious precedence relation;
s2: geochemical study of ancient reservoirs: the reflectivity, the organic element content, the carbon isotope, the sulfur isotope, the asphalt solubility, the microelements and the rare earth elements of asphalt in two types of filling hydrocarbons in a research area are analyzed and tested, and compared with the rock geochemistry in the Qian southwest area; as a result of the analysis and test, the composition of the stable isotope (C, S) is similar to that of the regional stratum rock, and the content (or ratio) of the trace and rare earth elements is similar, so that the ancient oil reservoir and the regional stratum are indicated to have the same material source; if the difference between the two is large, the formation of the paleo-reservoir is indicated to be irrelevant to the regional stratum, and the regional stratum is only a channel for later migration and reservoir formation;
s3: adult mineral study: in the ancient oil deposit, selecting asphalt with obvious growth relation with mineral rock, carrying out Re-Os isotope measurement on the asphalt, and determining a time lineage formed by gold deposit and the ancient oil deposit;
s4: comprehensive study of the mineral formation and storage times: comprehensively analyzing the thermal evolution degree of asphalt with different periods and different causes in reservoirs of the south-plate river basin, and indicating the age of raw oil and reservoir; and the latest ore formation age is limited by combining with the actual geological condition and comparing with the chronology data of Carlin type gold ores of sedimentary rock-holding ores in a research area.
2. The method of claim 1, wherein the organic elements in S2 comprise C, H, O, N.
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| CN117195545A (en) * | 2023-09-06 | 2023-12-08 | 中国科学院青藏高原研究所 | Calculation method and device for formation time window and distribution range of hydrocarbon source rock and paste salt cover layer |
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| CN117195545B (en) * | 2023-09-06 | 2024-05-07 | 中国科学院青藏高原研究所 | Calculation method and device for formation time window and distribution range of hydrocarbon source rock and paste salt cover layer |
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