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Magma (from Ancient Greek μάγμα (mágma) meaning "thick unguent") is the molten or semi-molten natural material from which all igneous rocks are formed. Magma is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites. Besides molten rock, magma may also contain suspended crystals and gas bubbles. Magma is produced by melting of the mantle and/or the crust at various tectonic settings, including subduction zones, continental rift zones, mid-ocean ridges and hotspots. Mantle and crustal melts migrate upwards through the crust where they are thought to be stored in magma chambers or trans-crustal crystal-rich mush zones. During their storage in the crust, magma compositions may be modified by fractional crystallization, contamination with crustal melts, magma mixing, and degassing. Following their ascent through the crust, magmas may feed a volcano or solidify underground to form an intrusion (e.g., an igneous dike or a sill). While the study of magma has historically relied on observing magma in the form of lava flows, magma has been encountered in situ three times during geothermal drilling projects—twice in Iceland (see Magma usage for energy production), and once in Hawaii.
Method for evaluating metallogenic potential of porphyry copper-(gold-molybdenum) ore
ActiveCN120334338AMaterial analysis using wave/particle radiationData processing applicationsMetallogenyMagma
The invention discloses a method for evaluating the mineralization potential of porphyry copper-(gold-molybdenum) ore. The evaluation method comprises the following steps: determining candidate rock masses with relatively high mineralization potential according to an oxygen fugacity value of magma zircon and / or a magma water content value of hornblende in a rock sample in an evaluation area; the aluminum saturation index ASI of the candidate rock mass is measured and calculated, the distribution coefficient and the distribution coefficient ratio of Cu, Au and Mo between fluid and melt are determined according to the ASI, simulation calculation is conducted through a Rayleigh fractionation model according to the distribution coefficient and / or the distribution coefficient ratio, and the content ratio of Au to Cu to Mo to Cu of the candidate ore body is obtained. According to the method, the mineralization potential of the porphyry copper ore and the enrichment degree and grade of Cu, Au and Mo of potential ore bodies can be rapidly and accurately evaluated.
Owner:GUANGZHOU INSTITUTE OF GEOCHEMISTRY CHINESE ACADEMY OF SCIENCES
High-precision anti-interference pressure transmitter
The invention discloses a high-precision anti-interference pressure transmitter, and relates to the technical field of anti-interference pressure transmitters. Comprising a pressure data acquisition module, a data preprocessing and integration module, a pressure fluctuation feature extraction and quantification module, an intelligent evaluation and deep learning analysis module and a dynamic adaptive monitoring regulation and control module, the pressure transmitter firstly continuously detects the fluid pressure in the earth crust fracture according to a preset initial detection threshold value, and recorded and collected pressure data serve as the basis of all subsequent analysis. According to the method, deep learning analysis and dynamic threshold adjustment are combined, transient pressure fluctuation and magma rising premonition are intelligently distinguished, and the risk of false alarm and missing alarm is reduced. By improving the sampling frequency and optimizing data analysis, a complete pressure change track is formed, the volcano monitoring precision and the anti-interference capability are improved, and efficient technical support is provided for geological safety early warning.
Owner:WUXI QIXIA TECH CO LTD
Method for discriminating composite mineralization of magma hydrothermal system
PendingCN120801668AMaterial analysis using wave/particle radiationMolecular entity identificationMetallogenyMagma
The invention relates to the technical field of ore deposit geological exploration, in particular to a method for judging the composite mineralization of a magma hydrothermal system, which comprises the following steps: 1) field geological survey and total factor sampling; 2) screening characteristic minerals and identifying lithofacies; (3) feature mineral mineralization generation division and cause preliminary exploration; 4) in-situ microcell geochemical analysis; (5) geochemically verifying the formation cause of the ore deposit; 6) analyzing an element zoning mode; and 7) reconstructing the composite mineralization process. According to the method, lithofacies discrimination, mineral geochemical analysis and mineral internal element spatial distribution (mapping / plane scanning) are organically combined, a multi-scale and multi-criterion synergistic composite mineralization recognition system is constructed, the magma hydrothermal system mineralization type can be effectively recognized, and then the composite mineralization process is reconstructed. The problem of lithofacies and geochemical splitting in traditional analysis is solved, and key technical support is provided for complex magma hydrothermal cause deposit analysis and deep prospecting prediction.
Owner:KUNMING UNIV OF SCI & TECH
Method, device and equipment for determining magma distribution of intrusive fault zone and medium
The invention discloses a method, a device, equipment and a medium for determining magma distribution of an intrusive fault zone, and relates to the technical field of oil and gas field exploration and development, and the method comprises the following steps: loading geological data of a target area; based on the geological data, constructing a fault plane of the magma intrusive fault zone in the target area; calculating a magma distribution indication factor of the magma intrusive fault zone in the target area; and determining a magma distribution position in the magma intrusive fault zone in the target area. According to the method, the value characteristic and the frequency characteristic of the earthquake information amount of the magma invading body are considered, the magma distribution indication factor S of the igneous rock invading fault zone is provided by combining the distribution characteristic of the fracture, the purpose of quantitatively predicting the magma distribution range in the fault zone is achieved, and the method can be used for predicting the closed and oil and gas dredging part in the fault zone. The brought prediction effect is more in line with the actual geological law; and a large number of geological parameters do not need to be counted, research can be directly carried out on seismic data, and the implementation process is more intuitive and rapid.
Owner:PETROCHINA CO LTD
Mineral prospecting prediction method based on compound rock mass anatomical porphyry-skarn composite mineralization system
The invention relates to the technical field of mineral resource prospecting exploration, in particular to a prospecting prediction method based on a compound rock mass anatomy porphyry-skarn composite mineralization system. The control factors and formation mechanism of the ore deposit are clarified, and the deep earth dynamics process of porphyry mineralization development is disclosed. Through typical ore deposit fine dissection, the space-time structure characteristics of mineralization in different structural evolution stages are discussed; according to the method, mineral in-situ micro-area surface scanning and sulfide isotope in-situ tracing technologies are utilized to determine occurrence forms of metallogenic elements, restrain activation migration behaviors of microelements, find out sources of metallogenic metal substances, reveal a superposition metallogenic development mechanism and provide theoretical basis and technical support for prospecting exploration.
Owner:KUNMING UNIV OF SCI & TECH
Method for quantitatively evaluating storage condition of magma hydrothermal deposit based on thermal chronology
The invention provides a method for quantitatively evaluating the storage condition of magma hydrothermal deposit based on thermochronology, which comprises the following steps: determining a sample sampling point based on field geological survey, collecting typical samples, picking out zircon and apatite monominerals, and preparing a U-Pb isotope test target and a fission track test optical slide; carrying out fission track dating on the zircon and the apatite to measure the U-Pb isotope age and (U-Th) / He isotope age of the zircon and the apatite; thermal history evolution process simulation is carried out by integrating test data, and finally, the deposit preservation condition is quantitatively calculated and evaluated according to simulation. According to the method, a scientific quantitative full-chain research scheme is provided for augmentation, denudation and thermal history evolution research of the magma hydrothermal deposit, and the technical problem of quantitative evaluation of the storage condition of the magma hydrothermal deposit is solved.
Owner:EAST CHINA UNIV OF TECH
Sample set construction method suitable for sandstone type uranium mine big data prediction
The invention belongs to the technical field of sandstone type uranium ore mineralization prediction, and particularly relates to a sample set construction method suitable for sandstone type uranium ore big data prediction, which comprises the following steps: a system collects and arranges geological-geophysical prospecting-geochemical prospecting-remote sensing data of a research area, extracts the geological, geophysical prospecting, geochemical prospecting and remote sensing data, and pre-processes the data; performing feature selection of a sample set by analyzing factors such as construction, magma activity, stratum and lithofacies paleogeography, geophysics, geochemistry and the like; integrating the selected sample feature data, and marking features and labels of each sample to form complete single sample data; and integrating the formed single sample data together to construct a sample set, performing feature engineering on the data in the sample set, randomly selecting samples to construct a training set, and using the remaining samples to construct a test set. According to the method, the working process of constructing the sandstone type uranium mine big data prediction sample set is optimized, so that the uncertainty in the working process is reduced.
Owner:BEIJING RES INST OF URANIUM GEOLOGY
Mining area mineralization prediction method and system based on mapping knowledge domain technology
The invention relates to the technical field of ore concentration area mineralization prediction, in particular to an ore concentration area mineralization prediction method and system based on a knowledge graph technology. The method comprises the following specific steps: collecting geological data of a region; analyzing a mutual relation among geological conditions, magma and hydrothermal action; and constructing a metallogenic prediction model based on the knowledge graph and realizing prediction. According to the method, the regional geological background, the mineralization condition and the ore deposit characteristics can be organically combined with artificial intelligence to construct the mineralization prediction model based on the knowledge graph, and the regional mineralization rule is discovered under the condition of organically combining the mineralization time, the mineralization space, the substances and the movement.
Owner:MINERAL RESOURCES EXPLORATION CENT OF HENAN PROVINCIAL GEOLOGICAL BUREAU
Earthquake prediction method and system for igneous rock intrusive fault zone closure
The invention belongs to the technical field of exploration and development of fault block oil and gas reservoirs, and particularly relates to a seismic prediction method and system for igneous rock intrusive fault zone sealing performance, and the method comprises the steps: determining the seismic attribute and seismic frequency attribute of a highlight body of a target interval according to petroleum seismic exploration data; determining magma invasion characteristic parameters according to the seismic attribute and the seismic frequency attribute of the highlight body, and determining fracture characteristic parameters of the fracture zone according to an eigenvalue characteristic algorithm operation result in the third-generation coherent attribute of the seismic data; determining an internal structure index of the intrusive fault zone according to the magma invasion characteristic parameters and the fracture characteristic parameters of the fault zone; and comparing the internal structure index of the intrusive fault zone with a closed lower limit threshold of the internal structure index of the known oil reservoir fault zone, and predicting the fault zone closure and the closure capability thereof according to a comparison result, thereby realizing quantitative determination of the oil and gas migration and dredging capability of the fault with magma invasion in the clastic rock stratum.
Owner:PETROCHINA CO LTD
Reverse-flow magma-based geothermal generation
ActiveUS12504203B2Collector components/accessoriesLighting and heating apparatusMagmaHeat transfer fluid
A geothermal system obtains heated heat transfer fluid via heat transfer with an underground reservoir of magma. The geothermal system includes a wellbore extending between a surface and into the underground reservoir of magma. A fluid pump provides a flow of heat transfer fluid toward the underground reservoir of magma. A fluid conduit extends from the surface toward a terminal end of the wellbore and allows flow of heated heat transfer fluid from a portion of the wellbore that extends into the underground reservoir of magma toward the surface.
Owner:ENHANCEDGEO HOLDINGS LLC
Method for rapid prediction of potential of porphyry copper mineralization based on spectral characteristics of tourmaline
ActiveUS20250012716A1Preparing sample for investigationMaterial analysis by optical meansMetallogenyMagma
A method for rapid prediction of porphyry copper mineralization potential based on spectral characteristics of tourmaline, includes collecting and collating data related to magma-fluid evolution, petrography and mineralogy of a porphyry copper deposit in a working area, systematically, distinguishing magmatic tourmaline from hydrothermal tourmaline in the working area, and further distinguishing phases and generations of the hydrothermal tourmaline; collecting hydrothermal tourmaline samples of the same phase and generation; performing short-wave infrared spectroscopy measurement on the collected hydrothermal tourmaline samples; extracting spectral characteristics of the Fe—OH wavelength and Mg—OH wavelength of the tourmaline samples based on The Spectral Geologist (TSG); and when the Fe—OH wavelength is less than 2245.75 nm, and the Mg—OH wavelength is greater than 2356.57 nm in the short-wave infrared spectrum of the samples, indicating that the porphyry copper deposit in an area where the samples are located has a great metallogenic potential.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING) +1
Method and device for recovering ancient landform of broken basin, medium and equipment
The invention relates to a method, a device, a medium and equipment for recovering the ancient landform of a broken basin. The method comprises the following steps: acquiring seismic profile data of a target basin; identifying top and bottom reflection interfaces of the magma bottoming body according to the seismic profile data; determining a seismic two-way travel time based on the top and bottom reflective interfaces of the magmatic bottoming body; on the basis of the earthquake two-way travel time, calculation is carried out by combining magma bottom dager body data and adopting a heave amount calculation model, and R values of all positions are obtained; constructing a section based on the R value to obtain a plurality of section lines; determining a ratio function; identifying an abnormal upheaval region according to a ratio function; and according to the R value of each section line, carrying out backstepping and correcting the abnormal upheaval area, and recovering the ancient landform of the broken basin. According to the method, the magma bottom can be quantitatively eliminated, the bottleneck problem that a disturbance area cannot be quantified and recovered in a traditional method is solved, and the real spatial form of an original stratigraphic system is accurately recovered.
Owner:CNOOC DEEPWATER DEV +1
Drilling a wellbore into a magma reservoir
A method for preparing a geothermal system involves preparing a wellbore that extends into an underground magma reservoir. Characteristics of the drilling process and the borehole are monitored to detect when the magma reservoir is reached, such that specially configured drilling operations can be performed to drill to a target depth within the magma reservoir.
Owner:ENHANCEDGEO HOLDINGS LLC
Method for comprehensively judging metallogenic structure system by magma hydrothermal solution
The invention relates to the technical field of mineral resource exploration, and discloses a method for comprehensively judging a metallogenic structure system by magma hydrothermal solution, which comprises the following steps: firstly, integrating multi-source data, and carrying out standardization processing and core index screening to form a data set; a four-level quantitative tree model is constructed, each level follows the precondition logic that the upper level is the lower level, the magma power foundation, the construction channel constraint, the substance enrichment auxiliary condition and the time sequence matching requirement are sequentially determined, and each index quantitative threshold value is delimited; and finally, inputting standardized data, verifying through a hierarchical progressive judgment algorithm, and outputting a metallogenic judgment result, target classification and risk prompt to realize accurate and efficient judgment of the magma hydrothermal solution on the metallogenic structure system.
Owner:KUNMING UNIV OF SCI & TECH
Magma wellbore with directional drilling
A method is provided for forming a wellbore extending from a surface into an underground reservoir of magma. The method includes drilling a primary borehole from the surface into the underground reservoir of magma and drilling a secondary borehole extending from the primary borehole and further into the underground reservoir of magma.
Owner:ENHANCEDGEO HOLDINGS LLC
Regional hot bump identification and reconstruction method based on stretching structure background
The invention belongs to the technical field of geology, and discloses a regional hot bump identification and reconstruction method based on a stretching structure background. Through integration of time-temperature inversion of multi-thermal chronology constraint, main trace element and isotope geochemical analysis and structural evolution modeling, a path from deep mantle thinning, magma source area tracing and thermal history evolution to shallow earth crust cooling can be realized, and omnibearing description and quantitative recovery of regional thermal heave are realized. Based on a multi-temperature-stage coupling inversion technology, the denudation rate, the lifting height and the cooling time can be quantitatively evaluated; based on accurate thermal history reconstruction and thermal rise identification, the thermal maturity of high-quality hydrocarbon source rocks can be effectively predicted, and area selection and trap positioning of oil and gas reservoirs are optimized, so that the success rate and economic benefits of oil and gas exploration are remarkably improved, and the method has scientific research and industrialization application values.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Screening method for ore-contained rock mass in tungsten-tin ore prospecting prospective area
The invention discloses a method for screening ore-contained rock masses in a tungsten-tin ore prospecting prospective area, and a tungsten-tin ore metallogenic specificity distinguishing system and a screening method are constructed on the basis of fusing rock ore total rock geochemical data, a partial fusion numerical simulation experiment, a Rayleigh shunt numerical simulation experiment and a crystal porridge body model. According to the method, through quantitative analysis of essential differences of the ore-containing rock mass, the lean ore rock mass and the non-ore-containing rock mass in the magma differentiation degree, rapid and accurate screening of the hidden mineralized rock mass in the prospecting distant view area is achieved, and the ore-containing rock mass with the most mineralization potential can be rapidly screened out from the non-ore-containing rock mass or the lean ore rock mass.
Owner:HEBEI GEO UNIVERSITY
A gold magma identification method based on high-dimensional element ratio phase space differentiation
The present invention discloses a method for identifying gold magma based on high-dimensional element ratio phase space differentiation, which solves the technical problem that gold magma cannot be accurately identified in the prior art. This method constructs a four-dimensional characteristic vector with ratios such as Ba / Zr, Nb / Y, U / Yb, and V / Y, projects it on the ratio phase space subdomain, and realizes the initial judgment, entropy state judgment and source area inversion of mineralization potential magma through distribution trend, trajectory disturbance and multi-factor clustering behavior. Multi-domain heterodimensional mapping and weighted fusion model are introduced to integrate the coupling effect of initial ratio disturbance, differentiation evolution trajectory and component source to form a set of high-order mineralization discrimination system for prospecting prediction. Through the above scheme, the present invention has the advantages of simple logic, accuracy and reliability, and has high practical value and promotion value in the field of mineral resource prediction and magma earth discrimination technology.
Owner:CHINA GEOLOGICAL SURVEY MILITARY-CIVILIAN INTEGRATED GEOLOGICAL SURVEY CENT
Method for predicting coal quality of magma contact metamorphic zone based on organic geochemical data
The invention provides a magma contact metamorphic zone coal quality prediction method based on organic geochemical data, and relates to the technical field of coal quality prediction. The magma contact metamorphic zone coal quality prediction method based on the organic geochemical data comprises the following steps that S1, at least two sampling sections are arranged in the direction perpendicular to a contact zone of a magma rock mass and a coal seam, one sampling section is perpendicular to a coal seam sedimentary layer, the other sampling section is parallel to the coal seam sedimentary layer, coal samples are collected on the sampling sections at equal intervals, and coal samples are obtained; and obtaining organic geochemical data of the critical control points. Through sparse sampling and transition point recognition algorithms, data requirements are greatly reduced, the prediction period is shortened, complex simulation is replaced by template matching, the prediction process is intuitive and explainable, a multi-source verification and reliability grading mechanism ensures that the result is stable, the overall method is high in practicability and easy to deploy and apply in a resource limited scene, and the prediction efficiency is improved. And the decision-making quality and benefit are improved.
Owner:HEBEI UNIV OF ENG
Estimation method of granite magma temperature
PendingCN119757321AMaterial analysis using wave/particle radiationAnalysis by thermal excitationMagmaMineralogy
The invention belongs to the technical field of geological rock research, and relates to a granite magma temperature estimation method, which comprises the following steps: (1) collecting a granite sample, and grinding the sample to obtain granite sample powder; (2) carrying out digestion treatment on the granite sample powder, and analyzing and testing the total rock SiO2 content in the granite sample; and (3) estimating the granite magma temperature TSiO2 according to a granite magma temperature calculation formula, wherein the calculation formula is TSiO2 =-14.16 * SiO2 (wt%) + 1723 (DEG C). The granite magma temperature calculation formula provided by the invention can more reasonably estimate the granite magma temperature according to the granite total rock SiO2 content.
Owner:INST OF OCEANOLOGY - CHINESE ACAD OF SCI
A method for determining the extension of a magmatic-hydrothermal deposit using fluid inclusions
This invention relates to the field of mineral deposit exploration technology, specifically disclosing a method for determining the extension of magmatic hydrothermal deposits using fluid inclusions. The method involves collecting mineral samples containing fluid inclusions from the target deposit and its surrounding area using a systematic grid. Physicochemical parameters are obtained through petrography, microthermometry, and isotope analysis, and a spatial database is established. Multiple initial hydrothermal centers are identified. A multi-dimensional spatial constraint field is constructed, incorporating temperature-salinity-isotope gradients, mineralization depth, and magma-water mixing ratio. Using the initial centers as seed points, a neighborhood search is performed along the gradient synthesis direction. Sub-hydrothermal centers are generated and continuously grow when preset conditions are met, until an overlap threshold is reached, at which point iteration stops. All hydrothermal centers and growth paths are integrated to construct a spatial extension model. High-potential areas are screened using a target area evaluation index, and the extension direction and potential mineralization target areas are determined by combining the mineralization depth. This significantly improves the accuracy of concealed ore body prediction and the efficiency of mineral exploration.
Owner:KUNMING UNIV OF SCI & TECH
A method for regional thermal uplift identification and reconstruction based on extensional tectonic background
The present invention belongs to the field of geological technology and discloses a method for regional thermal uplift identification and reconstruction based on extensional tectonic background. By integrating time-temperature inversion with multiple thermal chronological constraints, major and trace element and isotope geochemical analysis, and tectonic evolution modeling, it is possible to achieve a comprehensive characterization and quantitative restoration of regional thermal uplift from deep mantle thinning, magma source area tracing, thermal history evolution to shallow crust cooling path. Based on multi-temperature stage coupled inversion technology, it is possible to quantitatively evaluate the erosion rate, uplift height, and cooling time; based on accurate thermal history reconstruction and thermal uplift identification, it is possible to effectively predict the thermal maturity of high-quality source rocks, optimize the selection of oil and gas reservoirs and the positioning of closures, thereby significantly improving the success rate and economic benefits of oil and gas exploration, and has scientific research and industrial application value.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Method for preparing a distribution map of mineralization centers based on spatial distribution regularities of anomalous elements
This invention discloses a method for compiling mineralization center distribution maps based on the spatial distribution patterns of anomalous elements. The method involves collecting stream sediment data from the work area, performing principal component analysis, and extracting principal components with eigenvalues greater than 1. It also distinguishes between medium-high temperature element combinations and medium-low temperature element combinations; calculates the mineralization center factor M; and calculates the outlier value M of the mineralization center factor. c Import the mineralization center factor M into the ZScape software and draw a contour map of the mineralization center factor in the working area; use the outlier value M of the mineralization center factor. c Create a mineralization center distribution map for the boundary; M≥M c The region is represented as the mineralization center; M≤M c The region is represented as the mineralization edge; based on the relationship between elemental zoning and temperature in stream sediments, this invention constructs mineralization center factors for magmatic-hydrothermal related deposits, realizes the quantitative compilation of mineralization center distribution maps, and innovates a new model for map compilation.
Owner:TIBET JULONG COPPER CO LTD +1
Experimental system and method for simulating magma invasion and eruption effect on stratum transformation
PendingCN119688949AMaterial analysis using wave/particle radiationWithdrawing sample devicesMagmaTectonic deformation
The invention discloses an experimental system and method for simulating magma invasion and eruption to reform strata. The system can comprise a sand box, a power supply device and a temperature and pressure device, wherein the power supply device is positioned on the side surface of the sand box and is connected with a side plate of the sand box so as to provide power for simulating deformation for the sand box; an openable window is arranged at the lower part of the sand box, the warm pressing device is positioned below the sand box, and a nozzle of the warm pressing device can extend into the sand box through the window; simulation magma fluid in the temperature and pressure device enters the sand box through the nozzle and the window so as to simulate the transformation effect of magma invasion and eruption on the stratum in the simulation tectonic deformation process. The system can simulate the magma invasion and eruption process, meanwhile, research on magma invasion, eruption and the transformation effect on a pre-existing structure in an overlying stratum can be carried out in the structure deformation process, and then the understanding of magma activity on the transformation effect of an overlying undeformed geologic model, a synchronously deformed geologic model and a deformed geologic model is improved.
Owner:PETROCHINA CO LTD
Geothermal power from superhot geothermal fluid and magma reservoirs
System, method, and apparatus for harnessing geothermal power from superhot geothermal fluid (SHGF) and magma reservoirs. An exemplary apparatus can include a well screen coupled to an end of a casing string. The well screen, which is at least partially submerged within an underground reservoir, defines a volume in the underground reservoir that can be filled with superhot geothermal fluid. A slidable casing is aligned coaxially with the well screen and configured to be repositioned relative to the well screen. A draw pipe extending through the slidable casing is configured to convey SHGF from the underground reservoir towards the surface in response to the slidable casing being repositioned to obstruct more of a set of apertures in the well screen and an increase in pressure within a cavity of the slidable casing.
Owner:ENHANCEDGEO HOLDINGS LLC
Method for structure-multiple attribute tectonic palaeogeographic reconstruction of deep buried area of superimposed basin
The present application relates to the field of basin forming dynamics and oil exploration technology, in particular to a method for structure-multiple attribute tectonic palaeogeographic reconstruction of deep buried area of superimposed basin, establishing outcrop area and drilling stratum sequence framework and sedimentary facies model; determining vertical structure-stratigraphic unit of deep buried area of superimposed basin; determining spatial distribution of unconformity structure of deep buried area under single tectonic movement; determining main palaeoactive fault and magmatic activity of deep buried area; identifying and determining spatial distribution of seismic stratigraphic characteristics and attributes in single structure-stratigraphic unit; reconstructing tectonic palaeogeography of deep buried area of superimposed basin under single tectonic movement, using outcrop data, drilling and logging data, etc. to carry out comprehensive geology and geophysical analysis, using basin structure and geophysical multiple attributes in different periods to restore tectonic palaeogeography of deep buried area, and providing scientific, reliable and high-precision evidence for cognition and resource exploration of deep and ultra-deep layers under the double conditions of mutual constraint of palaeostructure and palaeogeography.
Owner:INST OF GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
A method, system, equipment and medium for predicting rare metal mineralization potential
ActiveCN120255012BMaterial analysis using wave/particle radiationData processing applicationsMetallogenyMagma
The present application relates to a method, system, equipment and medium for predicting the mineralization potential of rare metals. The prediction method comprises: obtaining tourmaline distribution data of a target area; performing microscopic petrographic analysis on tourmaline samples based on the tourmaline distribution data to identify the genetic type and ring-zone structure characteristics of the tourmaline samples; performing major element and trace element detection on the tourmaline samples according to the genetic type and ring-zone structure characteristics of the tourmaline samples to obtain major element data and trace element data; and determining the FeO2 content in the major element data based on the FeO2 content in the tourmaline samples. T The MgO ratio and the Nb and Sn contents in the trace element data, combined with the B isotope δ 11 B value, establish a magma-hydrothermal evolution model; based on the magma-hydrothermal evolution model, determine the characteristic element thresholds for rare metal mineralization potential; based on tourmaline distribution data and characteristic element thresholds, identify favorable prospecting areas in the target area. This application can effectively predict favorable areas for rare metal prospecting.
Owner:CHINA GEOLOGICAL SURVEY XIAN MINERAL RESOURCES SURVEY CENT
Method for determining deep extension of ore body of magmatic hydrothermal polymetallic deposit by using element geochemical anomaly
The present invention discloses a method for determining the deep extension of ore bodies in magmatic hydrothermal polymetallic deposits by using element geochemical anomalies. Based on large-scale structural alteration-lithofacies mapping and element geochemical content analysis, combined with the geological characteristics of the shallowly developed levels, through the compilation of element geochemical anomaly maps at different elevation planes and vertically, the spatial distribution characteristics and laws are summarized, and qualitative and quantitative indexes of element geochemical anomalies indicating the deep extension of ore bodies are further extracted, mainly including: quantitative evaluation indexes of element combination anomalies and the length, width and height difference of anomalies, and then a deep extension model of element geochemical anomalies in the unknown area in the deep part of the deposit is constructed, and finally the deep extension characteristics of hidden ore bodies are quickly determined; this method solves the problem of how to quickly identify the deep extension of deep ore bodies in the joint research process of traditional planar anomalies and profile anomalies, not only provides a new method for deep prospecting prediction, but also provides an important basis for the layout of prospecting engineering in deep prediction areas.
Owner:KUNMING UNIV OF SCI & TECH
Method and device for extracting marine magnetic anomaly bands under the interference of magmatic activity
ActiveCN114624781Breduce distractionsefficient extractionWater resource assessmentElectric/magnetic detectionMagmaMagnetic anomaly
The present invention discloses a method and device for extracting marine magnetic anomaly strips under the interference of magmatic activity, belonging to the technical field of marine magnetism. The method comprises performing two-dimensional Fourier transform on target magnetic anomaly strip data to obtain target magnetic anomaly strip data in the frequency domain, wherein the target magnetic anomaly strip data is marine magnetic anomaly strip data under the interference of magma; performing anisotropic filtering on the target magnetic anomaly strip data in the frequency domain by using an anisotropic filter to obtain the filtering result in the frequency domain; performing two-dimensional Fourier inverse transform on the filtering result in the frequency domain to obtain the magnetic anomaly strip extraction result in the space domain. The present invention realizes the effective extraction of marine magnetic anomaly strips under the interference of magmatic activity, reduces the interference of magnetic anomalies of magmatic activity, and improves the accuracy of interpretation of marine magnetic anomaly strips.
Owner:宿州学院
Earthquake characterization method and system for igneous rock intrusive fault zone structure
ActiveCN119644406ASolve the problem of quantitative prediction of structural differencesincrease success rateSeismic signal processingSeismology for water-loggingMagmaFracture zone
The invention relates to an igneous rock intrusive fault zone structure seismic characterization method and system, and belongs to the technical field of oil and gas field exploration and development. The method comprises the following steps: loading geological data of a target area; constructing a fault plane of the magma intrusive target fault zone; according to the fault plane of the magma intrusive target fault zone, determining the spatial geometry and position of the fault zone in the target area; calculating seismic indication factors and distribution thereof of the fault zone in the target area according to the spatial geometric morphology and position of the fault zone in the target area; and counting the threshold value of the seismic indication factor of the igneous rock intrusive fault zone found in the exploration area, comparing the seismic indication factor of the fault zone to be evaluated with the threshold value of the seismic indication factor, and quantitatively evaluating the structure of the igneous rock intrusive fault zone according to the comparison result. Compared with a traditional SGR method and the like, the method does not need to count a large number of geological parameters, but directly carries out research on seismic data, and the implementation process is more intuitive and rapid.
Owner:PETROCHINA CO LTD