CN106772676A - A kind of method of searching heavy-cover area skarn type mineral metal products - Google Patents
A kind of method of searching heavy-cover area skarn type mineral metal products Download PDFInfo
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Abstract
The invention discloses a kind of method of searching heavy-cover area skarn type mineral metal products, area's Minerotect structural map is reconnoitred by analyzing minerogenetic conditions establishment；Determine target prospecting area；Gravity, magnetic method surface sweeping data acquisition are carried out, data processing explanation is carried out, dissected to abnormal, it is determined that into ore deposit position；The steps such as drilling verification mineral reserve are realized being accurately positioned heavy-cover area skarn type mineral metal products.The present invention has advantages below compared to existing technology：According to heavy-cover area feature, it is different to the exception produced by the different geophysical prospecting method between coating, griotte, ore, rock mass, Combination of Methods application is carried out, reach and look for ore deposit purpose, capital efficiency and prospecting result are improved, is that the area of coverage looks for ore deposit to add effective physical prospecting Combination of Methods.
Description
Technical field
The present invention relates to technical field of geophysical exploration, more particularly to a kind of searching heavy-cover area skarn type gold
The method for belonging to mineral products.
Background technology
During the upward invaded formation of hypomagma, magma squeezes country rock in initially entering wall-rock crack, while adjoint
Magmatic hydrotherm constantly corrode enclose effect rock, part country rock is forced to be separated from stratum, and is wrapped up by magma, and formation is enclosed
Rock xenolith.When intermediate acidity magmatic rock invades carbonate rock stratum, often there is Skarnisation, marbleization and Cheng Kuang
Effect, contacts band and is formed about Skarn Deposit in country rock.
Ore deposit, earth's surface is looked for be covered by unconsolidated sediments such as Cenozoics in heavy-cover area, surface geology investigation method cannot carry out,
In geophysical prospecting method, various methods have its natural weak tendency, and such as usual electricity, electromagnetic method are acted on due to the low-resistivity layer shielding of coating,
The effective information of ore body or mineralising cannot be obtained.Single geophysical prospecting method is difficult to for the exploration of heavy-cover area skarn type mineral products
Prove effective.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided one kind finds heavy-cover area skarn type metal
The method of mineral products.
The present invention is achieved by the following technical solutions：A kind of side of searching heavy-cover area skarn type mineral metal products
Method, it is characterised in that step is as follows：
Area's Minerotect structural map is reconnoitred in step one, analysis minerogenetic conditions establishment；
Step 2, according to Minerotect structural map, determine target prospecting area；
Target prospecting area alternative condition includes：1. rock mass is in outer contacting band in carbonate formation；
2. rock mass is acid diabase, middle acid diorite-porphyrite, quartz monzobiorite, the length sudden strain of a muscle length of quartz two in Stage of Yanshan
One or more in porphyrite, granodiorite, granodiorite-porphyry and monzonitic granite；
3. stratum is calcium and magnesium carbonate formation of being united under the rich magnesium carbonate rock of upper system in Paleozoic group Cambrian system or the Ordovician system；
4. geotectonic position is North China Platform；
Step 3, carry out gravity, magnetic method surface sweeping data acquisition in target prospecting area, carry out data processing explanation, to it is abnormal enter
Row is dissected, it is determined that into ore deposit position；
Step 4, into ore deposit position drilling verification mineral reserve.
It is as further improvement of these options, the step of ore deposit position is determined into the step 3：In strong magnetic anomaly
CSAMT method profile surveys are carried out in normal region, judge to be deformation level stratiform or mushroom exception on CSAMT apparent resistivity section diagrams
Region be minerogenetic province, the intensity >=1000nT in the strong magnetic anomaly region, hundred meters of abnormal gradient >=400nT/, the mushroom
The abnormal profile abnormal morphology of shape is mushroom, mushroom 500-1500 meters of canopy diameter of exception, canopy top to mushroom root
500-1000 meters of portion's depth, abnormal 100-300 meters of the buried depth in top of mushroom, mushroom root position resistivity is poor with shoulder-bed resistivity (SBR)
It is 500-1000 ohm meters to be worth, and the abnormal apparent resistivity of the deformation level stratiform is slowly varying in the horizontal direction to be caused and regard
Resistivity curve delay it is raised or sunken, and apparent resistivity step band change be less than 2000 ohm meters/Km.
It is as further improvement of these options, the step of ore deposit position is determined into the step 3：It is different in weak magnetic
CSAMT methods and CR method profile surveys are carried out in normal region, judge that CSAMT apparent resistivities are horizontal layer, and CR method charge rate exceptions
Region is minerogenetic province, and the micro-magnetic anomaly field strength is 0-500nT, abnormal hundred meters of gradient ＜ 200nT/, CR method charge rates
The charge rate in abnormal region is more than 20%.
It is as further improvement of these options, the step of ore deposit position is determined into the step 3：In negative magnetic anomaly
CSAMT methods and CR method profile surveys are carried out in normal region, judge that CSAMT apparent resistivities are mushroom exception, and there is the charging of CR methods
The abnormal region of rate is minerogenetic province, and the intensity in the negative magnetic anomaly region is less than 0nT.
It is as further improvement of these options, the step of ore deposit position is determined into the step 3：In nose structure
The gravitational high abnormal area made, carries out CSAMT methods and CR method profile surveys, judges that CSAMT apparent resistivities are mushroom exception, and
There is the abnormal region of CR methods charge rate is minerogenetic province, the bouguer gravity anomaly of the gravitational high abnormal area of the nose structure
Figure value of entering the court is projecting, 1000-3000 meters of dilator naris bit wide, wing of nose center to 500-2000 meters of nasion span access location length, described
The abnormal profile abnormal morphology of mushroom is mushroom, mushroom 500-1500 meters of canopy diameter of exception, canopy top to mushroom
500-1000 meters of mushroom roots deep, abnormal 100-300 meters of the buried depth in top of mushroom, mushroom root position resistivity and country rock resistance
Rate difference is 500-1000 ohm meters, and the charge rate in the abnormal region of CR methods charge rate is more than 20%.
It is as further improvement of these options, the step of ore deposit position is determined into the step 3：In gravity ladder
Level band abnormal area carries out 1,/10,000 or 1/2.5 ten thousand magnetic surveies, in the region for magnetic anomaly occur, carries out CR methods section and surveys
Amount, judges that it is minerogenetic province the abnormal region of charge rate occur, and the charge rate in the abnormal region of CR methods charge rate is more than 20%.
It is as further improvement of these options, the step of ore deposit position is determined into the step 3：In gravity ladder
Level band abnormal area carries out 1,/10,000 or 1/2.5 ten thousand magnetic surveies, without magnetic anomaly but there is 0.1-1.5 × 10-5m/s2
Residual gravity anomaly region, carry out CR method profile surveys, judge that it is minerogenetic province charge rate abnormal area occur, CR methods are filled
The charge rate in the abnormal region of electric rate is more than 20%.
As further improvement of these options, in the step 4, surveyed magnetic tricomponent is carried out into the drilling of ore deposit position
Well, judge to exist side or shaft bottom it is abnormal be ore body.
As further improvement of these options, reconnoitre area's Minerotect structural map and work out in accordance with the following methods：Collect
The conventional geological and mineral in area and Use of Geophysical Data are reconnoitred, Bedrock Geology mineral products sketch is worked out；Carry out 1,/50,000 high-precision gravities area is reconnoitred
Measurement and 1/2.5 ten thousand high accuracy magnetic surveies, carry out Hidden Granite Body and stratigraphic structure infers explanation；Calmodulin binding domain CaM geological structure is special
Levy, work out Bedrock Geology map of mineral deposits；According to the Bedrock Geology map of mineral deposits calmodulin binding domain CaM regularity of ore formation, minerogenetic conditions is analyzed, compiled
Minerotect structural map processed.
The present invention has advantages below compared to existing technology：According to heavy-cover area feature, to coating, griotte, ore, rock
The exception produced by different geophysical prospecting methods between body is different, carries out Combination of Methods application, reaches and looks for ore deposit purpose, improves fund
Efficiency and prospecting result, are that the area of coverage looks for ore deposit to add effective physical prospecting Combination of Methods.
Specific embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed implementation method and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
The precondition of geophysical exploration is physical difference, such as according to Northern Area of Huaihe River physical property characteristic, by local area rock and ore
It is divided into 5 species such as Paleozoic group carbonate rock, Cenozoic clastic rock class, Magmatic Rocks, iron Copper Ores, cuproaurite alterated rocks class
Type.The physical property and its Geophysical Anomalies feature of all kinds of rock and ores are shown in Table 1.
The Northern Area of Huaihe River master stratum rock and ore physical property of table 1 and its Geophysical Anomalies mark sheet
, there is larger physical difference in above-mentioned 5 type rock and ore.In addition to Cenozoic's clastic rock class, remaining 4 type
Rock and ore, main ore-controlling key element is relevant in Jun Yu areas.Showing that local area is carried out using geophysical prospecting method looks for miner to make have geophysics
Premise.
As can be seen from Table 2：High-Precision Gravimeter Survey method can be played in terms of survey region construction carries out metallogenic prognosis
Important function, fault structure interpretation is carried out and in three paving rock mass distributed area delineation griotte xenoliths in particular with gravity anomaly
Aspect effect is fine.The limitation of the method is horizontally oriented not high with the resolution of vertical direction, directly can not evaluate ground
Plastid ore-bearing potential.
Using high accuracy magnetic method delineation of concealed rock body, explain rift structure, searching Xu's building formula iron ore and preceding routine iron copper mine
It is largely effective.The low ＆ gentle magnetic anomaly that the iron ore body very big to buried depth is formed is difficult to judge, to the preceding routine of no magnetic anomaly
Cuproaurite the method is also difficult to be judged.
The Northern Area of Huaihe River metallic mineral exploration geophysical prospecting method validity of table 2 comments table
CSAMT methods carry out griotte xenolith form and reconnoitre effect very well in three paving rock mass distributed areas, it is determined that fracture structure
Contact band aspect has a clear superiority under making band, rock mass contact band particularly rock mass, and indirect prospecting result is good.According to resistivity just
Had certain effect in terms of wall rock alteration is judged.The method can provide bedrock surface rolling shape, and the magnetic anomaly interpretation that can attach most importance to is carried
For information.The weak point of the method is limited, the less iron copper mine body of thickness that played a role in terms of ore-bearing potential directly evaluation
There is no resistivity anomaly to show, it is impossible to the ore-bearing potential of routine cuproaurite before evaluating.
CR methods are advantageous in terms of the ore-bearing potential of routine cuproaurite and iron copper mine before the evaluation, are that three floor file areas evaluate country rock and catch
Take prisoner the most effectual way of body ore-bearing potential.The weak point of the method is that data acquisition difficulty is big, production cost is high, operating efficiency
It is low, it is only used for target appraisal.
Induced electrical sounding and IP intermediate gradient method advantage are technology maturations, and low production cost can provide direct ore information.By
In there is bulk effect, the resolution to geologic body is not high.The limitation of the method is small depth of exploration, is only suitable for going out in basement rock
Dew area or the shallow area of coverage carry out the work, the deep area of coverage carry out the work swash electricity data be difficult collection, Northern Area of Huaihe River is not suitable for substantially
Preliminry basic research.
Different geophysical prospecting methods is only suitable for different goal tasks, and each method has limitation, and single method is difficult to complete
Target complete task.Only implementation combination, learns from other's strong points to offset one's weaknesses, and could preferably play geophysical prospecting method advantage.According to heavy-cover area
Feature, it is different to the exception produced by the different geophysical prospecting method between coating, griotte, ore, rock mass, carry out method group
Application is closed, is reached and is looked for ore deposit purpose, improve capital efficiency and prospecting result, be that the area of coverage looks for ore deposit to add effective geophysical prospecting method group
Close.
First step target prospecting area determines
1st, collect and reconnoitre the conventional geological and mineral in area and Use of Geophysical Data, carry out Bedrock Geology feature Primary Study, work out basement rock
Geological and mineral sketch.
2nd, 1,/50,000 High-Precision Gravimeter Surveys and 1/2.5 ten thousand high accuracy magnetic surveies are carried out in the whole district, according to gravity-magnetic anomaly,
Carry out Hidden Granite Body and stratigraphic structure infers explanation.
3rd, according to above data, calmodulin binding domain CaM Geologic Structure Feature works out Bedrock Geology map of mineral deposits.
4th, according to Bedrock Geology map of mineral deposits, the calmodulin binding domain CaM regularity of ore formation, analysis carries out minerogenetic conditions, is compiled into ore deposit and builds
Make structural map.
5th, according to Minerotect structural map, skarn type iron copper (gold) ore deposit target prospecting area is determined.
The condition that ore deposit target area determines is as follows：
1. near outer contacting band in rock mass with carbonate formation；
2. rock mass is acidity sudden strain of a muscle length (cellophane) rock, the length sudden strain of a muscle length of quartz two (cellophane) rock, Hua Gang sudden strains of a muscle (spot) rock long, two length in Stage of Yanshan
Granite；
3. stratum is calcium and magnesium carbonatite of being united under rich magnesium carbonate rock (griotte) of upper system in Paleozoic group Cambrian system and the Ordovician system
Stratum；
4. geotectonic position is North China Platform.
Carry out gravity, magnetic method surface sweeping data acquisition in target prospecting area, carry out data processing explanation, infer component in fault structure zone,
Delineation of concealed rock body；Weight magnetosphere ground is abnormal to carry out CSAMT methods and CR method profile surveys, is further dissected to abnormal：
(1) magnetic anomaly
1. strong magnetic anomaly：Intensity >=1000nT, hundred meters of abnormal gradient >=400nT/.Its geologic interpretation meaning has two kinds：
One is caused by iron ore.Off-note is：Area is small, intensity is high, gradient is big.Such anomaly area is smaller, typically
Less than 0.5km2；Anomaly intensity is maximum to reach 3000nT, and abnormal gradient is up to hundred meters of 1000nT/.Abnormal is in short axle form, such as circle
Shape, ellipse etc..
Two are caused by rock mass.Off-note is：Area is big.Survey and there was only 1 such magnetic anomaly, Ji Zou buildings annular magnetic in area
It is abnormal, mainly caused by Zou building diabase of inclined mafic.The anomaly intensity is high, has at 2 points with the difference of other strong magnetic anomalies, and one is
Area is larger, up to more than 15km2；Two is relatively small gradient, in hundred meters or so of 300nT/.
It is further abnormal to judge：Carry out 1,/10,000 or 1/2.5 ten thousand magnetic surveies, choose strong magnetic anomaly, carry out in abnormal position
CSAMT method profile surveys, if apparent resistivity is horizontal layer, judge that the exception is caused for non-ore deposit abnormal, are Mafic Rock；If depending on
Resistivity is deformation level stratiform, mushroom exception, then judge that the exception is caused for ore deposit abnormal.
Mushroom exception：Profile abnormal morphology is mushroom, mushroom 500-1500 meters of canopy diameter of exception, canopy top
Portion is to 500-1000 meters of mushroom roots deep, abnormal 100-300 meters of the buried depth in top of mushroom.Mushroom root position resistivity with enclose
Rock resistivity differences are about 500-1000 ohm meters.The extremely peripheral resistivity of mushroom is low, is contact band position, core portion resistance
Rate is high, and resistivity value can reach shoulder-bed resistivity (SBR) value.
Deformation level stratiform exception：Apparent resistivity is slowly varying in the horizontal direction cause apparent resistivity curve slow raised or
Depression, and the change of apparent resistivity step band is less than 2000 ohm meters/Km,
2. micro-magnetic anomaly：Intensity 0-500nT, abnormal hundred meters of gradient ＜ 200nT/.Gradient >=200nT/ hundred is there is also in area
The magnetic anomaly of rice.Such magnetic anomaly can both be caused by iron ore, it is also possible to be caused by rock mass, vein.Can also be rock mass basement rock
Face protuberance causes.
As hundred meters of magnetic anomaly gradient G T.GT.GT 50nT/, and area is small, form bowlder, and majority is caused by iron ore.When magnetic anomaly gradient
Hundred meters of≤50nT/, no matter size and form, majority is caused by rock mass, vein.
It is further abnormal to judge：Carry out 1,/10,000 or 1/2.5 ten thousand magnetic surveies, choose micro-magnetic anomaly, carry out in abnormal position
CSAMT methods and CR method profile surveys, if CSAMT apparent resistivities are horizontal layer, and then judge that this is different extremely without CR methods charge rate
Chang Weifei ore deposits cause exception, are geologic body, rock mass, judge that the exception is that ore deposit causes exception if it there is CR methods charge rate exception；If depending on
Resistivity is deformation level stratiform exception, then judge that the abnormal buried hill, rock mass cause exception.
3. magnetic anomaly is born：In rock mass distributed area, often there is negative magnetic anomaly, field is worth small 0nT.Captive is mainly caught by country rock in rock mass
Body causes, and such as often family bears magnetic anomaly behind preceding normal the north in the negative magnetic anomaly inside horse bridge rock mass and three paving rock mass.Fire God Temple east side
Negative magnetic anomaly and primary Nian Zhuan east sides bear magnetic anomaly and are respectively positioned on Hidden Granite Body distributed area, and corresponding with gravitational low, thus it is speculated that by coal-
Two repeatedly coal measure strata cause.
It is further abnormal to judge：Carry out 1,/10,000 or 1/2.5 ten thousand magnetic surveies, choose negative magnetic anomaly, carry out in abnormal position
CSAMT methods and CR method profile surveys, if CSAMT apparent resistivities be mushroom exception, and exist CR methods charge rate extremely then judge
This is extremely for ore deposit causes exception；If CSAMT methods apparent resistivity is deformation level stratiform exception, judge that the exception is drawn by griotte
Rise, be that non-ore deposit causes exception.
(2) gravity anomaly
1. gravitational high exception：Show as nose exception.Abnormal prominent in Bouguer map, field value is projecting,
Value amplitude size variation is indefinite, 1000-3000 meters of dilator naris bit wide, wing of nose center to 500-2000 meters of nasion span access location length,
Form nose exception.There are 2 kinds of explanations in rock mass distributed area, one is caused by bedrock surface protuberance buried hill, it is new because of rock mass overlying
Life is small for density of earth formations, and rock mass density is big.In the basement rock area of coverage that landform is flat, high density bedrock surface protuberance, gravity field intensity
Degree increases therewith, and synkaingenesis is necessarily thinning for low-density stratum, and gravity field intensity is consequently increased, and forms gravitational high exception, such as
Liu Zi collection, iron temple and Fire God Temple gravity are high etc..Two are caused by griotte xenolith in rock mass, because griotte density is higher than rock
Volume density, Ru Yangqiao is diligent-jujube orphan's heap gravity anomaly.Majority is combined with griotte by bedrock surface protuberance and caused, such as Liu Lou, preceding Chang Chong
Power is high etc..
Also there are 2 kinds of explanations in Palaeozoic Strata distributed area, one is caused by Cambrian system and Ordovician limestone or griotte；Two
It is to be caused by Cenozoic's overburden cover thin bedrock face protuberance buried hill.Majority is combined with limestone formation by bedrock surface protuberance and drawn
Rise.Such as Shilou County's gravity is high.
It is abnormal to judge：
Carry out 1,/10,000 or 1/2.5 ten thousand gravity measurement, choose nose exception, carry out CSAMT methods in abnormal position and CR methods are cutd open
Planar survey, if CSAMT apparent resistivities be mushroom exception, and exist CR methods charge rate extremely then judge exception for ore deposit cause it is different
Often；If CSAMT methods apparent resistivity is deformation level stratiform exception, judge that the abnormal buried hill, griotte cause exception, be non-
Ore deposit causes abnormal.
2. gravity zone exception：
Gravity zone is main to be caused by rock mass contact band or component in fault structure zone.Gravity zone is more than 0.5 × 10-5m/
During s2/Km, linear gravity zone, rift structure, non-ore deposit causes exception, is not evaluated.
The low step band of annular gravity, is rock mass contact band, and its ore-bearing potential is evaluated with method the following.
It is abnormal to judge：
Carry out 1,/10,000 or 1/2.5 ten thousand gravity measurement, select gravity zone exception, abnormal position carry out carry out 1,/10,000 or
1/2.5 ten thousand magnetic surveies, then carry out work below and are judged：
The first kind：Abnormal position contains magnetic anomaly, carries out CR method profile surveys, if there is charge rate exception, can determine whether for
Mineral is abnormal (iron copper mine)；
Equations of The Second Kind：Abnormal position carries out CR without magnetic anomaly, but when there is the residual gravity anomaly of 0-1.5 × 10-5m/s2
Method profile survey, if there is charge rate exception, can determine whether as mineral is abnormal (cuproaurite)；
CR method charge rate exceptions：It is charge rate exception defined in this judgement when charge rate is more than 20%.
By the analysis to above-mentioned abnormal area, in minerogenetic province, magnetic tricomponent well logging is carried out in drilling, there is side or well
Bottom exception, then can determine whether non-ore body, if without exception can determine whether non-stratum or rock mass.
Above method exists《Often area iron copper-molybdenum gold mine is looked into advance before Anhui Province Suixi County》Project application, it is determined that 26 predictions
Area's (target prospecting area), and abnormal examination and drilling verification appraisal have been carried out to 11 Geophysical Anomalies areas of wherein 9 Target areas.
Ore body is found that in 4 Target areas, 6 Geophysical Anomalies, is submitted at mineral exploration base 2 and a collection of important Mineralizing anomaly information.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Any modification, equivalent and improvement for being made within principle etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of method of searching heavy-cover area skarn type mineral metal products, it is characterised in that step is as follows：
Area's Minerotect structural map is reconnoitred in step one, analysis minerogenetic conditions establishment；
Step 2, according to Minerotect structural map, determine target prospecting area；
Target prospecting area alternative condition includes：1. rock mass is in outer contacting band in carbonate formation；
2. rock mass is acid diabase, middle acid diorite-porphyrite, quartz monzobiorite, the length sudden strain of a muscle cellophane long of quartz two in Stage of Yanshan
One or more in rock, granodiorite, granodiorite-porphyry and monzonitic granite；
3. stratum is calcium and magnesium carbonate formation of being united under the rich magnesium carbonate rock of upper system in Paleozoic group Cambrian system or the Ordovician system；
4. geotectonic position is North China Platform；
Step 3, gravity, magnetic method surface sweeping data acquisition are carried out in target prospecting area, carry out data processing explanation, cutd open to abnormal
Analysis, it is determined that into ore deposit position；
Step 4, into ore deposit position drilling verification mineral reserve.
2. as claimed in claim 1 a kind of method of searching heavy-cover area skarn type mineral metal products, it is characterised in that the step
The step of ore deposit position is determined into rapid three be：Carry out CSAMT method profile surveys in strong magnetic anomaly region, judge CSAMT apparent resistances
For the abnormal region of deformation level stratiform or mushroom is minerogenetic province on rate sectional drawing, the intensity in the strong magnetic anomaly region >=
1000nT, hundred meters of abnormal gradient >=400nT/, the abnormal profile abnormal morphology of the mushroom are mushroom, mushroom exception
500-1500 meters of canopy diameter, canopy top to 500-1000 meters of mushroom roots deep, the abnormal top buried depth 100-300 of mushroom
Rice, mushroom root position resistivity is 500-1000 ohm meters, the deformation level stratiform exception with shoulder-bed resistivity (SBR) difference
Apparent resistivity it is slowly varying in the horizontal direction to cause apparent resistivity curve to delay raised or sunken, and apparent resistivity step band becomes
Change and be less than 2000 ohm meters/Km.
3. as claimed in claim 1 a kind of method of searching heavy-cover area skarn type mineral metal products, it is characterised in that the step
The step of ore deposit position is determined into rapid three be：Carry out CSAMT methods and CR method profile surveys in micro-magnetic anomaly region, judge CSAMT
Apparent resistivity is horizontal layer, and CR method charge rates abnormal area is minerogenetic province, and the micro-magnetic anomaly field strength is 0-
500nT, abnormal hundred meters of gradient ＜ 200nT/, the charge rate in the abnormal region of CR methods charge rate are more than 20%.
4. as claimed in claim 1 a kind of method of searching heavy-cover area skarn type mineral metal products, it is characterised in that the step
The step of ore deposit position is determined into rapid three be：Carry out CSAMT methods and CR method profile surveys in negative magnetic anomaly region, judge CSAMT
Apparent resistivity is mushroom exception, and there is the abnormal region of CR methods charge rate is minerogenetic province, the negative magnetic anomaly region
Intensity is less than 0nT.
5. as claimed in claim 1 a kind of method of searching heavy-cover area skarn type mineral metal products, it is characterised in that the step
The step of ore deposit position is determined into rapid three be：In the gravitational high abnormal area of nose structure, carry out CSAMT methods and CR methods section is surveyed
Amount, judges that CSAMT apparent resistivities are mushroom exception, and there is the abnormal region of CR methods charge rate is minerogenetic province, the nose
The Bouguer map of the gravitational high abnormal area of columnar structure value of entering the court is projecting, 1000-3000 meters of dilator naris bit wide, nose
To 500-2000 meters of nasion span access location length, the abnormal profile abnormal morphology of the mushroom is mushroom, mushroom at wing center
500-1500 meters of abnormal canopy diameter, canopy top to 500-1000 meters of mushroom roots deep, the abnormal top buried depth of mushroom
100-300 meters, mushroom root position resistivity is 500-1000 ohm meters, CR method charge rate exceptions with shoulder-bed resistivity (SBR) difference
Region charge rate be more than 20%.
6. as claimed in claim 1 a kind of method of searching heavy-cover area skarn type mineral metal products, it is characterised in that the step
The step of ore deposit position is determined into rapid three be：Carry out 1,/10,000 or 1/2.5 ten thousand magnetic methods in gravity zone abnormal area to survey
Amount, in the region for magnetic anomaly occur, carries out CR method profile surveys, judges that it is minerogenetic province, CR the abnormal region of charge rate occur
The charge rate in the abnormal region of method charge rate is more than 20%.
7. as claimed in claim 1 a kind of method of searching heavy-cover area skarn type mineral metal products, it is characterised in that the step
The step of ore deposit position is determined into rapid three be：Carry out 1,/10,000 or 1/2.5 ten thousand magnetic methods in gravity zone abnormal area to survey
, without magnetic anomaly but there are 0.1-1.5 × 10 in amount-5m/s2Residual gravity anomaly region, carry out CR method profile surveys, judge
It is minerogenetic province charge rate abnormal area occur, and the charge rate in the abnormal region of CR methods charge rate is more than 20%.
8. as claimed in claim 1 a kind of method of searching heavy-cover area skarn type mineral metal products, it is characterised in that the step
In rapid four, magnetic tricomponent well logging is being carried out into the drilling of ore deposit position, judging that there is side or shaft bottom exception is ore body.
9. as claimed in claim 1 a kind of method of searching heavy-cover area skarn type mineral metal products, it is characterised in that reconnoitre area
Minerotect structural map is worked out in accordance with the following methods：The conventional geological and mineral in area and Use of Geophysical Data are reconnoitred in collection, work out Bedrock Geology
Mineral products sketch；Carry out 1,/50,000 High-Precision Gravimeter Surveys and 1/2.5 ten thousand high accuracy magnetic surveies area is reconnoitred, carry out Hidden Granite Body
Infer with stratigraphic structure and explain；Calmodulin binding domain CaM Geologic Structure Feature, works out Bedrock Geology map of mineral deposits；According to Bedrock Geology map of mineral deposits
The calmodulin binding domain CaM regularity of ore formation, analyzes minerogenetic conditions, works out Minerotect structural map.
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| CN107589472A (en) * | 2017-09-30 | 2018-01-16 | 青海省第三地质矿产勘查院 | The exploitation method of Magmatic Cu nickel minerals |
| CN107807400A (en) * | 2017-09-12 | 2018-03-16 | 昆明理工大学 | The method of tunnel gravity total space domain coordinate detection deep high density inclined orebody |
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| CN107807400A (en) * | 2017-09-12 | 2018-03-16 | 昆明理工大学 | The method of tunnel gravity total space domain coordinate detection deep high density inclined orebody |
| CN107589472A (en) * | 2017-09-30 | 2018-01-16 | 青海省第三地质矿产勘查院 | The exploitation method of Magmatic Cu nickel minerals |
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| CN110133736B (en) * | 2019-05-30 | 2021-07-30 | 安徽省勘查技术院(安徽省地质矿产勘查局能源勘查中心) | Gold ore identification method and system for coverage area inheritance fracture structure |
| CN112083500A (en) * | 2019-07-11 | 2020-12-15 | 安徽省勘查技术院(安徽省地质矿产勘查局能源勘查中心) | Method and system for identifying steep-inclined vein-shaped gold ores under thick covering layer |
| CN112083500B (en) * | 2019-07-11 | 2024-02-23 | 安徽省勘查技术院(安徽省地质矿产勘查局能源勘查中心) | Method and system for identifying steep inclined pulse gold ores under thick coverage layer |
| CN112083499A (en) * | 2019-12-04 | 2020-12-15 | 安徽省勘查技术院(安徽省地质矿产勘查局能源勘查中心) | Comprehensive geophysical well logging method and system for searching metal ore |
| CN112083499B (en) * | 2019-12-04 | 2024-02-20 | 安徽省勘查技术院(安徽省地质矿产勘查局能源勘查中心) | Comprehensive geophysical well logging method and system for searching metal ores |
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