This data set is a granitoid geological data set in hengduan Mountain area, which is located in western Sichuan, eastern Tibet and western Yunnan in the eastern part of qinghai-Tibet Plateau. The area is bounded by the Ailaoshan-Jinshajiang deep fault, the Kang-Dian ancient land of the Yangtze plate in Eurasia to the east, and the Ancient Tethis-Himalayan tectonic zone to the west. From Precambrian to Tertiary, the granitoids in hengduan Mountains are well developed from neutral, acidic to alkaline, and are distributed in bands. Due to the change of granite types caused by tectonic evolution, multiple types of granites are distributed in the same rock belt, thus forming the composite rock belt. The original data of this data set is digitized from the book "Granite Geochemistry in Hengduan Mountains". This data set provides basic data for the study of Hengduan Mountains and has reference value for the study of related fields.
ZHANG Yuquan , XIE Yingwen
This dataset is the composition dataset of biotite and amphibole in Hengduan Mountains. Biotite is the most common dark rock-forming mineral in granites. They are widely distributed and are the focus of the study in this section, and their chemical composition is closely related to the physicochemical conditions at the time of their formation. This dataset mainly studies the geological occurrence, physical properties and chemical composition of biotite and amphibole in granites in Hengduan Mountains, as well as the trace elements, structural characteristics, infrared spectral characteristics, differential thermal analysis of biotite and amphibole. and other studies to reveal the origin of granites in Hengduan Mountains and provide a basis for the research on the origin of granites.
ZHANG Yuquan , XIE Yingwen
1) Data content: The table contains the heavy mineral data results of Dahonggou profile during the period of 20-5ma, as well as the lithology of the sample, sampling stratum location and GPS points. The analysis results of heavy mineral data show that the Dahonggou section in the northern Qaidam Basin experienced three phased provenance changes at ~19 Ma, 11 Ma and 8 Ma, which provides heavy mineral data support for understanding the provenance change history in the northern Qaidam Basin since the Miocene. 2) Data source and processing method Extraction and testing of heavy minerals: first remove fine particles (< 5 μ m) Light minerals, then heavy liquid tribromomethane is used to further extract heavy minerals through centrifugation, freezing and extraction. Finally, qemscan mineral identification technology is used for quantitative identification. 3) Data quality The sample collection and experimental treatment were carried out according to strict standards, and the data obtained were reliable. 4) Data application achievements and Prospects One SCI paper was published with this set of data.
NIE Junsheng
This dataset is the geological structure map of the China-Pakistan Economic Corridor and the Tianshan Mountains. The obtained geological map is a 1:2.5 million geological map, covering the China-Pakistan Economic Corridor and the Tianshan Mountains. Geological structural maps can provide a digital space platform for the informatization of the national economy, and provide information services for national and provincial departments for regional planning, geological disaster monitoring, geological surveys, prospecting and exploration, and macro decision-making. The obtained geological map data source is obtained by first scanning the paper version of the map, then performing georeferencing on the ArcGIS 10.5 platform, and then vectorizing it. The storage format is vector data, and the spatial granularity is divided into regions.
ZHU Yaru
The samples in this data set are mainly collected from 2013-2019 and sporadic river sediment samples from 2001-2013. The data set contains the sampling location information of 40 main stem samples and 107 tributary samples, petrographic data of 62 river sediment samples, heavy-mineral data of 145 river sediment samples, and geochemical data of 55 samples. The petrographic data were collected with Gazzi-Dickinson method with grain size window at 63-2000 μm. The heavy minerals are separated from 32-500 μm sediment with the heavy liquid (2.90 g/cm3) and liquid Nitrogen, and then counted the heavy minerals depend on the mineral's optical properties and Raman spectroscopy. The geochemical analysis were tested for sediment < 2000 μm. The data of petrography and heavy minerals were collected in the laboratories of University of Milan-Bicocca and Nanjing University, respectively. The geochemical data were completed by the Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences. All the results are true and reliable. This data set systematically reflects the sediment compositions of different tributaries and different tectonic domains (Tethys Himalayan terrane, Yarlung Tsangpo suture zone, Lhasa Block, etc.) in the Yarlung Tsangpo drainage. With the high-resolution compositional dataset, the distribution characteristics of modern sediment derived from different lithology/rivers in the Southern Tibet can be obtained, which also provide the reference for deep time provenance comparison. Meanwhile, combined with the forward mixing model, we can calculate that the Lhasa Block contributes ~80% of the sandy sediments to the Yarlung Tsangpo drainage, which can be up to 5 times higher than the contribution of the Tethys Himalaya, whereas the sediment contribution from the Yarlung Tsangpo suture zone is only less than 5%.
LIANG Wendong , HU Xiumian, YAO Wensheng
We have studied the Petrotectonic attributes of granites distributed in a large area in the North Lancangjiang structure in Bitu area. The major and trace elements and Sr Nd isotopes have been completed in the Key Laboratory of deposit geochemistry, Institute of geochemistry, Chinese Academy of Sciences. Among them, the main elements are analyzed by pw4400 X-ray fluorescence instrument, and the contents of 10 element oxides are determined; Trace elements are tested by ICP-MS inductively coupled plasma mass spectrometer. ICP-MS is manufactured by Agilent company in Tokyo, Japan, and the model is Agilent 7700x. The analysis method is the same as that of Zhang Xin, etc. According to the analysis results of standard sample gbpc-1de, the analysis error is less than 5%. MC-ICP-MS double focusing magnetic mass spectrometer with Neptune plus model is used for isotope test experiment. The test basis is GB / T 17672-1999.
WANG Shifeng
Through the fine anatomy of the structure of magmatic hydrothermal tin tungsten polymetallic metallogenic system in zhaxikang ore concentration area, combined with the research progress of Geophysics and geochemistry and the significance of mineral indication, the combination of deep prospecting techniques and methods of "Geology geophysics geochemistry mineral element tracing" in the ore concentration area is integrated. ① The deep structure of the dome and the top interface of the concealed rock mass are found out by geophysical techniques such as medium-scale gravity and magnetism, and the favorable geological bodies and key working areas for mineralization are delineated; ② Large scale tectonic alteration mapping and large-scale magnetotelluric sounding jointly restrict the favorable parts of mineralization; ③ Borehole primary halo survey and sphalerite prospecting mineralogical research inversion of deep prospecting prospect; ④ The metallogenic geological model comprehensively delineates the deep prospecting target area and carries out drilling verification.
ZHANG Linkui
Based on various geological geophysical data in zhaxikang ore concentration area, the comprehensive exploration model of magmatic hydrothermal deposits in the ore concentration area is summarized: 1) Delineate the low gravity and low magnetic anomaly area according to the regional gravity and magnetic data, and obtain the high resistivity anomaly area combined with the magnetotelluric profile measurement, so as to comprehensively predict and locate the rock mass; 2) The dome mantle is located by using the distorted parts of low-density, weak magnetic anomaly and apparent resistivity isoline; 3) According to the low gravity anomaly zone and the steep gradient zone with dense variation of apparent resistivity isoline, the tensile fault zone developed in the caprock is comprehensively delineated; 4) Combined with the metallogenic model, at the intersection of rock mass and mantle, combined with the development degree of tensile faults, the deep ore body is comprehensively predicted.
LIANG Shengxian
In situ micro area S isotope analysis adopts single point mode. In order to solve the down hole fractionation effect of sulfur isotope ratio in the analysis process (Fu et al., 2016), large beam spot (44) is selected μ m) Single laser ablation rate (about 100 Hz) and single laser ablation rate (about 2 Hz). At the same time, signal smoothing device (Hu et al., 2015) is equipped to ensure stable signal under low frequency conditions. The laser energy density is fixed at 5.0 J / cm2. Nitrogen is introduced into the plasma to reduce the interference of polyatomic ions. Sulfur isotope mass fractionation is corrected by SSB method. In order to avoid matrix effect, pyrite is corrected by pyrite reference material ppp-1; Gb26078 national standard for chalcopyrite powder correction sample; Above sample δ For the recommended value of 34sv CDT, please refer to (Fu et al., 2016). During the test, the reference material sp-po-01 of pyrrhotite in the laboratory（ δ 34sv CDT = 1.4 ± 0.4 ‰), chalcopyrite reference material sp-cp-01（ δ 34sv CDT = 5.5 ± 0.3 ‰) and international silver sulfide reference material iaea-s-2（ δ 34sv CDT = 22.58 ± 0.39 ‰) and iaea-s-3 δ 34sv CDT = - 32.18 ± 0.45 ‰) was repeatedly analyzed as a quality monitoring sample to verify the accuracy of the experimental method. In situ of gold bearing pyrite δ 34S value is 1.06 ‰ ~ 2.41 ‰, and there is no gold pyrite in slate δ The 34S value is 8.19 ‰ ~ 15.86 ‰, indicating that the sulfur related to mineralization comes from deep source rather than surrounding rock stratum.
ZHANG Linkui
The hydrogen and oxygen isotopic compositions were analyzed and tested by Beijing Institute of nuclear industry geology using mat-253 mass spectrometer. Firstly, the samples tested for H and O isotopes are selected and purified under binocular lens. The purity reaches more than 99%, and then ground to 200 mesh. This hydrogen isotope analysis is determined by zinc reduction method. The adsorbed water and secondary inclusions are removed by drying at low temperature, heated to 600 ℃, and the water of primary fluid inclusions is extracted from the sample. Then, h in the effluent is replaced with Zn, and H2 is analyzed by mass spectrometry. The analysis accuracy of hydrogen isotope is ± 1%. The oxygen isotope is determined by bromine pentafluoride method of oxygen isotope composition in silicate and oxide minerals. BrF5 reacts with the sample under vacuum conditions of 500 ~ 680 ℃, and the generated O2 is analyzed by mass spectrometry. The analysis accuracy of oxygen isotope is ± 0.2%. The H-O isotope value shows that the ore-forming fluid mainly comes from the activation of metamorphic crust or mantle and the addition of atmospheric precipitation. The mixing of different fluids is the key mechanism to control the precipitation of gold bearing sulfide.
ZHANG Linkui
Muscovite Ar dating technology obtains Muscovite single minerals by crushing, screening, manual elutriation, heavy liquid separation, magnetic separation and microscopic examination of the selected Muscovite samples. The pure minerals (purity > 99%) are cleaned by ultrasonic. The cleaned sample is sealed in a quartz bottle and sent to the nuclear reactor for neutron irradiation. The irradiation work is carried out in the "swimming pool reactor" of China Academy of atomic energy. B4 channel is used, and the neutron current density is about 2.65 × 1013n cm-2S-1。 The total irradiation time was 1440 minutes and the integrated neutron flux was 2.30 × 1018n cm-2； The standard sample for monitoring sample is also available for neutron irradiation at the same time: zbh-25 biotite standard sample, with a standard age of 132.7 ± 1.2mA and a K content of 7.6%. The graphite furnace is used for the stage heating of the sample. Each stage is heated for 10 minutes and purified for 20 minutes. Mass spectrometry analysis was carried out on the multi receiving rare gas mass spectrometer helix MC, and 20 sets of data were collected for each peak. After all data are regressed to the time zero value, quality discrimination correction, atmospheric argon correction, blank correction and interference element isotope correction are carried out. The interference isotope correction coefficient generated during neutron irradiation is obtained by analyzing the irradiated K2SO4 and CaF2, and its value is: (36Ar / 37aro) Ca = 0.0002398, (40Ar / 39Ar) k = 0.004782, (39Ar / 37aro) Ca = 0.000806. 37Ar is corrected for radioactive decay; 40K decay constant λ＝ five point five four three × 10-10 years - 1; The calculated J value is 0.003283. The 40Ar-39Ar age of hydrothermal gold bearing sericite in the main metallogenic period is 16.03 ± 0.31 Ma, indicating that the deposit was formed in Miocene, which is obviously different from the main gold deposits in Tethys Himalayan gold antimony polymetallic metallogenic belt (formed in Eocene).
ZHANG Linkui
Based on the anatomy of the fine structure of Zhaxikang deposit, through systematic structural analysis, geophysical exploration and interpretation, combined with the shallow geochemical characteristics, the comprehensive geological geochemical geophysical exploration model and prediction index system of zhaxikang deposit are used to carry out mineral prediction, and one deep prospecting target area near zhaxikang line 54 is delineated. The deep target area of Qingmuzhu is located in the northwest of Cuonadong Xianglin area. Based on the information of geology, geochemistry and Geophysics, a beryllium tin tungsten polymetallic prospecting target area is delineated in the deep part of Qingmuzhu area. Geochemical characteristics show that there are high cumulative anomalies of lead, zinc, antimony and silver lining values in Qingmuzhu area, indicating that there are low-temperature element anomalies such as lead and zinc in this area. At the same time, the geological mapping work found several NE trending fault fracture zones on the surface of Qingmuzhu, with a width of 1-5m, filled with quartz, iron manganese carbonate and metal sulfide, indicating that there is a vein shaped lead-zinc antimony polymetallic mineralization controlled by the fault in qingmuzhu, which has similar metallogenic characteristics to Zhaxikang lead-zinc polymetallic deposit. According to the cuonadong dome extension zone, it extends northwestward and just reaches the deep part of Qingmuzhu area.
ZHANG Linkui
The cuonadong sn-w-be deposit, located in southern Tibet, is the first large tin polymetallic deposit related to Miocene leucogranite found in the Himalayas. The AR ar ages of muscovite and phlogopite in cassiterite sulfide veins in skarn are 15.4ma and 15.0ma respectively, and the U-Pb age of cassiterite in skarn is 14.3ma. The zircon and monazite U-Pb ages of tin bearing Leucogranites are 14.9ma and 15.3ma, respectively. The above diagenetic and metallogenic ages are completely consistent within the error range, indicating that tin tungsten mineralization is related to Miocene leucogranite in Genesis. The main metallogenic mechanism of skarn w-sn-be is water rock reaction. The metallogenic mechanism of cassiterite quartz vein and cassiterite sulfide vein is fluid boiling caused by the increase of oxygen fugacity, cooling and depressurization. The precipitation mechanism of fluorite quartz vein is the fluid mixing and dilution of magmatic hydrothermal fluid and atmospheric precipitation. The U-Pb age of monazite of garnet schist in cuonadong dome indicates that exhumation and retrograde metamorphism occurred at 38-26 Ma, and a small amount of pegmatite dikes (34 MA) were formed. The cuonadong dome was mainly formed in 21-18 Ma, which is the joint action of STDs extension and detachment and the second stage leucogranite (21 MA) magmatic diapir. At 18-16 Ma, the North-South rift led to the dehydration and partial melting of mica in the high Himalayas, forming the latest tin bearing leucogranite (16mA) and ore controlling fault system. The cuonadong tin polymetallic deposit was formed by the high-grade evolution of tin bearing leucogranite, fluid exmelting and magmatic hydrothermal fluid. There are a large number of dome structures similar to cuonadong and Miocene highly differentiated tin bearing Leucogranites in the Himalayas. This area is expected to become a new tin tungsten rare metal metallogenic belt.
ZHANG Linkui
The Cuonadong gneiss dome, a newly discovered dome in the North Himalaya Gneiss Domes (NHGD) belt, iscomposedofthreeparts: core, mantle, andouterlayer. Theyarecomposedof Cambrian granitic gneiss, Early Paleozoic mica schist and skarn marble, and metamorphic sedimentary rocks, respectively, andleucogranitesandscores ofpegmatite veinsintrudeintothecore ofthe Cuonadong gneiss domeatalater stage. The Xianglin Be-Sn polymetallic ore depositislocatedin the northern Cuonadong gneiss dome. Anumber of north-south and east-north extensionalfaults are developedinthe mining area. The Be-Sn polymetallic orebodies were newly discovered through systematic surface exploration engineering in the mantle layer around the core of the dome and fault fracture zones. Theanatomy ofatypical mining areain the northern Cuonadong dome shows four types of ore bodies: skarn, cassiterite-quartz vein, cassiterite-sulfide, and granite pegmatite. Skarn type ore bodies occur in skarn marble in the mantle; mineralization is dominated by Sn, Be and W; Sn ore gradeis relatively low. Cassite-quartz vein type ore bodies are controlled by NE extensional fracture; mineralization is dominatedby Sn, Beand W; oregrades are relatively high. Cassite-sulfide orebodies are controlled by the interlayers lipstructure in marble; Snore gradeis high but Beand W ore grades arelow. Mineralization in pegmatiteis mainly Be, accompanied by Rb. Verified at great borehole depth, we found the deep extension of all types of ore bodies except pegmatite is relatively stable. Based on the study of there lationship between magma and Be-Sn polymetallic mineralization, we reveal that there are two stages of mineralization in the Xianglin mining area, and the mineralization is closely related to the weakly oriented two-mica granite and muscovite granite. Based on orebody characterization we developed a ore prospecting strategy. The main targets infuture ore exploration will be cassite-sulfide and cassite-quartz vein type ores as they are relatively rich in Be, Sn and W.
ZHANG Linkui
Himalayan leucogranites are widely distributed in the North Himalayan gneiss dome (NHGD) and at the top of the Great Himalayan Crystalline Complex (GHC) and are generally controlled by detachment faults. The ages of these pre-, syn-, and postkinematic leucogranites can be used to limit the activity of detachment structures (such as the South Tibetan Detachment System, STDS). Research on the STDS activity time in the eastern Himalayas is relatively sparse. In this study, the zircon and monazite U-Th-Pb geochronology of syn- and postkinematic leucogranites, which are affected by the STDS and NHGD, in four areas (Lhozhag, Kuju, Xiaozhan and Cuonadong) in Shannan City, Tibet, China, was measured. The results show that the oldest synkinematic two-mica granite from Lhozhag, which is affected by the STDS, is 24 -25 Ma, so the time of STDS activity is at or slightly earlier than 25 Ma. The youngest synkinematic leucogranite is the garnet-bearing muscovite granite in Cuonadong at 18.4 Ma. The oldest undeformed postkinematic leucogranite (not affected by the STDS) is the muscovite granite in Xiaozhan at 17.4 Ma. Therefore, the end of STDS activity can be limited to 18.4-17.4 Ma. The STDS includes three forms: detachment fault in the NHGD (northern extension of the STDS), the inner STDS between the GHC and Tethyan Himalayan Sequence, and the outer STDS at the bottoms of synformal klippes. In this paper, the active time limits of the above three kinds of detachment zones are comprehensively summarized. Based on this work, the northward extension (ductile deformation) time of the STDS in the region is considered to be 28-17 Ma. The exhumation of the GHC is mainly controlled by in-sequence shearing. First, the South Tibet Thrust system (predecessor of the STDS) at the top of the GHC thrust southward at 45-28 Ma; then, the High Himalayan Discontinuity fault in the middle of the GHC forms south-vergent ductile thrusts at 28-17 Ma; finally, the Main Central Thrust at the bottom of the GHC thrust southward at 17-9 Ma.
ZHANG Linkui
In this study, the zircon and monazite U–Th–Pb geochronology of synkinematic and postkinematic leucogranites, which are affected by the STDS and NHGD, in four areas (Lhozhag, Kuju, Xiaozhan, and Cuonadong) in Shannan City, Tibet, China, was measured. The results show that the oldest synkinematic two-mica granite from Lhozhag, which is affected by the STDS, is 24–25 Ma, so the time of STDS activity is at or slightly earlier than 25 Ma. The youngest synkinematic leucogranite is the garnet-bearing muscovite granite in Cuonadong at 18.4 Ma. The oldest undeformed postkinematic leucogranite (not affected by the STDS) is the muscovite granite in Xiaozhan at 17.4 Ma. Therefore, the end of STDS activity can be limited to 18.4–17.4 Ma. The STDS includes three forms: detachment fault in the NHGD (northern extension of the STDS), the inner STDS between the GHC and Tethyan Himalayan Sequence, and the outer STDS at the bottoms of synformal klippes.
ZHANG Linkui
The observation and temperature test of fluid inclusions were completed under Linkam THMs 600 cold and hot platform and Zeiss polarizing microscope. The temperature of the instrument can be tested in the range of − 196 - + 600 ° C. The measurement accuracy is ± 0.5 ° C in the temperature range of − 120 ~ − 70 ° C, ± 0.2 ° C in the temperature range of − 70 ~ + 100 ° C and ± 2 ° C in the temperature range of 100 ~ 500 ° C. The synthetic fluid inclusion samples provided by American fluid Inc were used to calibrate the temperature of the cold and hot bench. During the test, the heating rate is generally 1 ~ 5 ° C / min, the heating rate near the phase transition point of CO2 containing inclusions is 0.2 ° C / min, and the heating rate near the phase transition point of aqueous inclusions is 0.2 ~ 0.5 ° C / min, which ensures the accuracy and reliability of phase transition temperature data. The micro thermometric data of fluid inclusions in quartz particles in Mingsai mining area, Tibet are used to deduce the fluid salinity and pressure during gold mineralization and the fluid temperature during gold precipitation.
ZHANG Linkui
The data mainly include the study of typical porphyry deposits, skarn deposits, magmatic deposits and pegmatite deposits in Kunlun mountain area. Porphyry deposits, focus on determining the deep process and front response of mineralization, and then clarify the genetic model and metallogenic law; Skarn type deposit, focusing on the relationship between the migration and evolution of hydrothermal fluid and mineralization; Copper nickel sulfide deposit, focusing on finding out the location and mode of magma assimilation and contamination of the crust, and then revealing the melting and dissociation process of sulfide; Pegmatite type deposits focus on the migration behavior of elements in the process of magmatic hydrothermal transformation, and then reveal the enrichment mechanism of rare metals such as Li, be, Nb and Ta in pegmatites. The experimental data obtained this time is mainly through the collection of field scientific research samples, and the elements, isotopes and chronology of the collected ore and rock samples in summer hamu, kendecok, Dahongliutan and other mining areas. The preliminary research processing results show that the data quality is high.
YUAN Feng
In this study, passive source seismology is used to systematically detect the metallogenic background of the ore concentration area. Therefore, 20 broadband seismic observation points are arranged in Jiama Qulong ore concentration area. The observation period is more than 12 months. The wide-band seismograph arranged in a plane is the integrated wide-band seismograph of nanomatrics horizon in Canada and cmg-3tde in the UK. The data format is minified. Before the actual field data acquisition, the seismometer, digital collector, GPS antenna and continuous power supply system used in the field data acquisition were tested before construction in Fuzhou City, Jiangxi Province, so as to ensure that the instrument can work normally in the field work. Most of the stations are located where the environmental interference is as small as possible to minimize the signal interference caused by human or other natural vibrations. However, due to the observation in the ore concentration area, some observation points cannot be avoided. Considering that the work area is located in Tibet, China, with strong light and large interference, in order to ensure high-quality and continuous waveform records on the basis of reducing instrument risks, we adopted the method of digging a pit to build a platform foundation, and established a platform foundation with unified specifications for each instrument. First, dig a large pit with a diameter of 80-90 cm and a depth of about 80 cm at the location where the station is to be arranged. Before digging the pit, ensure that the underground soil is the original soil rather than backfill. When digging the pit, it is best to dig the bedrock. Secondly, after the pit is excavated, arrange a prefabricated cement pier with a thickness of about 20cm and a diameter of about 30cm, then prepare a large plastic bucket with a volume of 200 L, dig holes at the bottom of the bucket, insert the bucket bottom after digging into the cement pier to the greatest extent, and then tamp it with cement or in-situ soil around the cement pier, And punch holes at the appropriate position where the barrel top is higher than the ground as the cable inlet and outlet. When the seismometer is put into the big bucket, a small bucket shall be buckled upside down on the seismometer to ensure that the seismometer is isolated from the small bucket. Finally, fill the inverted bucket and the upright bucket with high-strength sponge, stubborn. There are two advantages: first, it can isolate the seismometer and ensure the stability of internal temperature and pressure conditions; Second, it can ensure the stability of the environment in the barrel and reduce the background noise. Before installing the seismometer, the surface of the cement pier shall be dried first to ensure good contact between the supporting foot of the seismometer and the installation surface. Then use the geological compass for accurate orientation, mark the cement surface with plastic ruler, marker pen and other tools, and draw the pointing line. The pointing line should preferably pass through the center where the seismometer will be placed. After determining the orientation, place the seismometer on the drawn azimuth scale line, and rotate the seismometer to make the copper pointer at the bottom consistent with the pointing line (the copper pointer points to the East). It should be noted that the compass is easily affected by ferromagnetic objects during orientation. Therefore, the compass should be slightly away from sensors, iron tools, etc. Thirdly, connect the corresponding wire to the seismometer and wrap it around the instrument on the cement surface for several weeks. Finally, adjust the sensor foot screws to make the bubbles center and lock the screws. The broadband mobile seismic station observation adopts the continuous waveform recording method for data acquisition, the sampling rate is 100sps, and the GPS continuous signal receiving method is used for positioning, timing and clock calibration.
HE Rizheng
Pusangguo is a high-grade copper polymetallic deposit dominated by skarn. It is the only large copper lead zinc cobalt nickel deposit in the Gangdise metallogenic belt (GMB); There are few records of magmatic rocks related to the deposit, and its petrogenesis and geodynamic background are not clear. In order to explore these problems, we provided zircon u – Pb ages, Hf isotope, whole rock geochemistry and Sr – nd – Pb isotope data of Busan fruit biotite granodiorite (PBG) and Busan fruit diorite porphyrite (PDP) in the deposit. Entrusted the analysis and testing center of Beijing Institute of geology of nuclear industry and the State Key Laboratory of geological process and mineral resources of China University of Geosciences (Beijing); The fresh rock samples were ground to 200 mesh without pollution for analyzing the main and trace elements and Sr nd Pb isotopic values of the whole rock. Zircon U-Pb Dating: Zircon was glued to the slide with double-sided adhesive, covered with PVC ring, and then epoxy resin and curing agent were fully mixed and injected into the PVC ring. After the resin is completely cured, the sample target is stripped from the glass slide, ground and polished, and then the sample on the target is photographed by reflected light and transmitted light under microscope and cathode fluorescence photography. According to the cathodoluminescence, reflected light and transmitted light photos of zircon, the appropriate (interested) zircon dating domain is selected. The data results are good.
LI Zhuang , WANG Liqiang
