Attached tables S1-S14 are the experimental data of Naran Eclogite in Pakistan. Table S1-S3 and table s12-s13 are the main element compositions of minerals analyzed on thin slices using jeol jxa8230 electron microprobe instrument. We used on-line atomic absorption fluorescence (ZAF type) correction and adopted the following standards: jadeite (Na, Al), olivine (mg), diopside (Si, CA), orthoclase (k), rutile (TI), rosaxene (MN), hematite (FE), fluorite (f) and NaCl (CL). The analytical accuracy of CL is ± 0.01wt%, and that of other elements is 0.01-0.2wt%. The amount of Fe3 + was calculated according to stoichiometric constraints using program ax (Holland and Powell et al., 1998). For table S4, Zr in rutile was analyzed in the State Key Laboratory of lithospheric evolution. Cameca sxvive EPMA was used, the ACC voltage was 20kV, the beam current of Ti was 50na, Zr and other trace elements were 300na, and the peak counting time of Ti was 10s, while the peak counting time of Zr and other trace elements was 120s. The detection limit (3sigma) of Zr is 70 ppm. Meanwhile, the reference rutile of r10b detected by LA-ICP-MS was measured, and the EPMA error was less than 10%. For table S5-S6 and table s9-s10, U-Pb dating was carried out by cameca ims-1280 Sims of Institute of Geology and Geophysics, Chinese Academy of Sciences. The operation and data processing procedures were completed according to Li et al. (2009). We use 20 × thirty μ M, and the U-Th-Pb ratio and absolute abundance relative to standard zircon plesovice and 91500 were determined. The long-term measurement error of 206Pb / 238U standard zircon is 1.5% (1rsd) will propagate (Li et al., 2010), although the 206Pb / 238U error of a single measurement is usually 1% (1rsd) or less. Assuming that the source of ordinary Pb is mainly surface pollution, we corrected ordinary Pb using the measured 204Pb and the current average Pb composition (Stacey and Kramers, 1975). The data of individual analysis and summary analysis are calculated with one standard deviation (1) σ) And two standard deviations (2 σ) In the form of. Data reduction was performed using the program isoplot / ex v. 3.23 (Ludwig, 2003). For tables s7-s8, geochronological data and REE components are measured by la-icpmas. Standard samples gj-1 (calibration standard) and plesovice (second standard) are used as external standard samples for U-Pb dating calibration. Plesovice (calibration standard) and NIST 612 (second standard) are used as external standards for trace element content calibration. For table s9-s10, rutile U-Pb dating was obtained on cameca ims-1280 Sims. We determined the U-Th-Pb ratio and absolute abundance relative to standard zircon plesovice and 91500. The long-term measurement error of 206Pb / 238U of standard zircon is 1.5% (1 RSD), although the single measurement error of 206Pb / 238U is 1% (1 RSD) or less. For table S11, a summary of symbiotic assemblages of representative Naran eclogite samples based on the above results is provided. For table S14. The PT condition is calculated by the geological thermobarometer. Attached figure SF1. (a) PL, BT, AMP and QZ with small particle size are produced in the core of large particle GRT in the form of inclusions, sample sn07. (b) Dol and QZ with small particle size occur in the core of GRT in the form of inclusions. B-B 'represents the chemical composition profile of large grain garnet, sample sn07. (c) Omphacite phenocrysts are replaced by syncrysts after CPX + pl. (d) Omphacite phenocrysts are replaced by the alternating structure of Bt + amp + pl.
ZHANG Dingding , ZHANG Dingding, DING Lin
This data includes 1:4 million precision fault data within the scope of Qinghai Tibet Plateau in China. The attribute table fields include fault name, fault length, strike, dip, fault property, paleoearthquake, etc. The data comes from the Seismological Bureau. Later, by consulting a large number of fault related literature, the attribute of fault activity age is added on the basis of the original data. The accuracy of original data is reliable, and a special person is responsible for quality review; After review by many people, the data integrity, position accuracy and attribute accuracy meet the requirements of relevant technical regulations and standards, and the quality is excellent and reliable. The fault data can provide basic data support for some fault related research work in the Qinghai Tibet Plateau.
QI Shengwen
The single mineral EPMA data set of magmatic rocks in the Himalayan orogenic belt is mainly based on the main data of single minerals in Jilong area, and the test points of single minerals are more than 200. The rock is light colored granite. The single minerals tested are mainly feldspar, garnet, muscovite and biotite. The single mineral electron probe uses cameca sxvivefe electron microprobe, etc. The data has not been published, and the data results are true and reliable. The testing units are mainly the Institute of geology, Chinese Academy of Geological Sciences and the Institute of mineral resources, Chinese Academy of Geological Sciences. The data set can be used to study the petrogenesis of leucogranite melts in the Himalayan orogenic belt.
ZENG Lingsen , GAO Lie , YAN Lilong
Zircon U-Pb dating data set of Leucogranites in wengbo area of Himalayan orogenic belt is mainly zircon dating in wengbo area, and there are 28 zircon dating samples. The rocks are mainly leucogranite and pegmatite. The zircon dating method is LA-ICPMS. The data comes from the receiving phase. The articles published by the data are SCI or Ni journals, including geology, BSA bulletin and Journal of petroleum. The data results are true and reliable. The testing units are mainly Institute of geology, Chinese Academy of Geological Sciences, national testing and Analysis Center, Chinese Academy of Geological Sciences and Institute of mineral resources, Chinese Academy of Geological Sciences. The data set can be used to study the formation age of Cenozoic magmatism in the Himalayan orogenic belt.
ZENG Lingsen , GAO Lie , YAN Lilong
Guided by the theories of plate tectonics, paleogeography, petroliferous basin analysis and sedimentary basin dynamics, a large number of data and achievements of geological research and oil and gas geological research in the pan third pole in recent years are collected, including basic materials such as strata, sedimentation, paleontology, paleogeography, paleoenvironment, paleoclimate, structure, oil and gas (potassium salt) geology, especially paleomagnetism Based on the data of paleontology, detrital zircon and geochemistry, combined with the results of typical measured stratigraphic sections, the Cenozoic lithofacies and climate paleogeographic pattern are restored and reconstructed, and the pan tertiary Cenozoic lithofacies paleogeographic map (1) and pan tertiary Cenozoic climate paleogeographic map (3) are obtained, in order to explore the impact of paleogeography, paleostructure and paleoclimate on oil and gas Control and influence of (including potassium salt) resources, so as to reveal the geological conditions of oil and gas formation and the law of resource distribution, and provide scientific basis and technical support for China's overseas and domestic oil and gas exploration deployment.
LI Yalin
This dataset includes 14 detrital zircon U-Pb chronological data from Cretaceous-Pliocene sediments sampled from Tierekesazi section in the Pamir-Tian Shan convergence zone. Detrital zircon in sedments could reveal the coupling of sedimentary basin and adjacented orogenic belt. U-Pb age of detrital zircon is a important method to analysis provenance tracing of sediments in basin. Moreover, this method also could constrain the uplift process of orogenic belt. Purification of detrital zircon grain following standard protocols includes contents, jaw crusher, shaking table, magnetic separator and heavy liquids. The separated zircon grains were mounted in epoxy resin and polished for LA-ICP-MS analysis. Cathodoluminescence (CL) images were taken for potential target spot selection. Each sample chose 120 points as potential target spot, at least. Zircon U-Pb dating was conducted using an Agilent 7500a Q-ICP-MS coupling with a 193 nm COMPex Pro laser. U-Pb age distributions were counted and analysed using DensityPlotter. U-Pb age of sediments of Tierekesazi section reveal chronology of Cretaceous-Pliocene strata of the profile, Tierekesazi section located in the narrow Pamir-Tian Shan convergence zone, the Mesozoic-Cenozoic sediments in the Tierekesazi section were sourced from the adjacent and eroding Pamir and Tian Shan mountain ranges.which provide a general context for our provenance analyses. This data allowed us to reconstruct the Cretaceous-Pliocene tectonic-geomorphic evolution of the Pamir-Tian Shan corridor.
FU Bihong
The age constraints for Cenozoic exhumation history of the northern Tibetan Plateau provides evidence for growth process of the plateau and interaction process of tectonics-climate-erosion in this region. Apatite fission track thermochronology has a relative lower closure temperature of ~100 °C, thus is capable of recording the exhumation process of upper crust. We collected 26 sedimentary samples in the Hongliugou section in northern Qaidam Basin, which consist of strata from the Lulehe Formation to Shizigou Formation. These samples were fission track dated using the external detector method in the Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences. The result shows fission track central age of these samples range in 36.4 ± 2.0 Ma to 78.0 ± 2.8 Ma. Most of our sample failed the chi-square test, indicating a mixture of multiple sources with different cooling ages. We use the binomial fitting method to decompose the mixture single-grain ages and obtained 55 age components. Decomposed component age of these detrital samples ranges in 21.2 ± 2.9 Ma to 102.8 ± 9.0 Ma. Integrated analysis of the fission track ages and confined track length indicates that samples in the upper 2500 m of the section had not affected by burial annealing after deposition, while that in the lower 2500 m were partial annealed after deposition. Unannealed fission track ages showing “static peaks” in ~60-50 Ma and ~40-36 Ma, which indicates the source of these detritus, the Qilian Shan, have experienced significant rock exhumation in these two stages in respective. This study suggests that tectonic deformation initiated in the northern Tibetan Plateau in early Cenozoic, which synchronous with India-Asia collision. Thus we suggest the Qilian Shan serves as the northern boundary of the Tibetan Plateau since the early Cenozoic.
SONG Chunhui, HE Pengju
This data set contains zircon U-Pb dating, zircon Hf isotope, whole-rock principal, and trace element data of diorite granite and andesite dacite in Xinjiang area, south of bango, Qinghai Tibet Plateau. The data results are from the Zhai Qingguo research team, Institute of Geology, Chinese Academy of Geological Sciences. The data are of good quality and can be used to study the ocean closure process of Bangong Lake Nujiang suture in the central Qinghai Tibet Plateau, the subsequent collision process of Lhasa Qiangtang block, magmatism, and the Cretaceous crustal regeneration and reconstruction of Lhasa block in the central and Northern Qinghai Tibet Plateau. At the same time, this data also provides zircon CL images and reflection photos of all samples, zircon location for reference and comparison, and also provides a basis for the chronology of magmatic rocks and zircon genesis in the study area at the same time. Zircon U-Pb age instrument: obtained from laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), zircon Hf isotope instrument: Neptune multi-collector inductively coupled plasma mass spectrometry (MC – ICP – MS), connected by a goals-193 laser ablation system. The main and trace elements of the whole rock are measured by the National Experimental Center (Academy of Geosciences), Major elements: (XRF; Axios – pw4400), trace elements: ICP-MS; PerkinElmer NexION 300D。
WANG Wei
This data includes main and micro geochemical data of the whole rock, 40Ar / 39Ar dating data of phlogopite, and Sr-Nd isotope data of the whole rock. The samples were collected from the edge of the Ramba dome in eastern Tibet. The argon isotope of phlogopite uses the stage heating method, and the plateau age and isochron age are calculated by ArArCALC software; The major elements in the whole rock were analyzed by X-ray fluorescence spectrometry (XRF); Trace elements in the whole rock were measured by Quadrupole Inductively coupled plasma mass spectrometer (Q-ICPMS); Sr-Nd isotopic composition was obtained by MC-ICP-MS. The data obtained show that the age of the phlogopite plateau is 13.1 ± 0.18 Ma, which is consistent with the inverse isochron age; The ultrapotassic melt comes from the partial melting of lithospheric mantle in the Indian continent, and the source depth is shallow, so it should be a spinel stable area.
LIU Zhi-Chao
This data includes the main trace geochemistry and Sr-Nd isotope data of the whole rock. The samples were collected from four rock bodies in the West Kunlun Pamir area. The main geochemical data of the whole rock are obtained by X-ray fluorescence spectrometer, the trace elements are obtained by inductively coupled plasma mass spectrometer, and the Sr-Nd isotopic data of the whole rock are obtained by multi-collector inductively coupled plasma mass spectrometer. Through the obtained data, the magma source areas are defined as the mixing of Mesoproterozoic ancient basement rocks and juvenile crustal materials, the mixing of meta-igneous rocks, and meta-sedimentary rocks, and Mesoproterozoic ancient basement rocks, which help understand regional magmatism and tectonic evolution.
YIN Jiyuan
Qiangtang Basin is located between the Hoh Xil-Jinsha River tectonic belt and the Bangong-Nu River tectonic belt, is an important petroleum-bearing basin in the Qinghai-Tibet region of China. The basin has multiple sets of source rocks developed in the Mesozoic. The Triassic strata are widely distributed in the basin. Among them, the Upper Triassic has a large thickness and is considered as an important source rock, however, there is still a lack of understanding of its distribution, hydrocarbon generation potential, and major controlling factors. In this paper, the Upper Triassic source rocks in the Qiangtang Basin were studied, and the key samples were taken in the Quemo Co area of the Northern Qiangtang Basin, which was less studied previously. The source rocks were evaluated based on the geochemical characteristics of the samples, and the provenance input and depositional environment of the source rocks were analyzed according to the characteristics of their biomarkers. Combining the results of previous studies on the source rocks of the Upper Triassic Xiaochaka Formation in the Qiangtang Basin, the distribution characteristics, hydrocarbon generation potential, and the controlling factors of the source rocks of the Upper Triassic in the Qiangtang Basin were studied. The analysis results of the samples of the Upper Triassic Bolila Formation and the Bagong Formation source rocks collected in the Quemo Co area of the Northern Qiangtang Basin indicate that the TOC range of the Bolila Formation limestone is 0.03%~0.53% with an average of 0.20%, and the TOC range of the Bagong Formation mudstone is 0.57%~1.78% with an average of 1.04%. Both have reached the effective source rock grade, The source rocks of the Bolila formation reaches the level of medium source rock grade, and the organic matter abundance of the source rocks of the Bagong Formation is higher than that of the Bolila Formation and reach the medium-good source rock grade. The organic matter types of the source rocks are type II 1 , and the Tmax of the organic matter are all higher than 455°C, R O of all samples are 1.3% to 2.0%, the organic matter maturity achieve high mature stage. The organic matter of the source rocks is both the marine aquatic organism and the terrestrial plant, which is a mixed source. The source rocks sedimentary environment should be a reducing environment. The salinity of water body may be the salt water environment. Combining with previous research results, the authors evaluated the source rocks of the Upper Triassic Xiaochaka Formation in the Qiangtang Basin. The organic matter abundance of the argillaceous source rocks can basically reach the medium-good source rock level, carbonate source rocks organic matter abundance basically reach the poor source rock level. The types of the organic matter in carbonate source rocks are mainly Type II 1 and individually Type I. The organic matter types of the argillaceous source rocks are Type II 2 and Type III, and a small amount of the Type II 1 source rocks. The maturity of the source rocks is generally high-mature and over-mature stage, with only a few areas showing mature stage. The argillaceous source rocks are distributed in the Tumen-Sewa area, Zaxiahe-Ganggairi and Woruo Moutain-Geladandong area in the North and South Qiangtang Depression. Carbonate source rocks are mainly distributed in the South Qiangtang Depression. Affected by the regional tectonic movements, the main source rock beds in the Qiangtang Basin have undergone two oil and gas generation processes during the burial process. The Upper Triassic Xiaochaka Formation entered the hydrocarbon generation threshold in in the late Lower Jurassic to early Middle Jurassic and entered the first oil generation period. The basin experienced the last period of intense deformation and shrinkage in the Late Oligocene-Early Miocene and entered the second hydrocarbon generation period.
HAN Zhongpeng
Apatite (U-Th)/He data from the Nuomuhong region of the East Kunlun Shan. Apatite (U-Th)/He analysis was conducted at the State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration using the Australian Scientific Instruments (ASI) Alphachron noble gas mass spectrometer and Agilent 7900 inductively coupled plasma mass spectrometry. Reproducibility within each sample were reasonably good. We determine the paleodepth of each sample by measuring the distance perpendicularly from the erosion surface to the sample. All new and published ages are plotted against their paleodepth. The age-paleodepth relationship shows a break in slope at ~25 Ma, which is interpreted to initiation of thrusting at northern margin of the East Kunlun Shan.
LI Chaopeng, ZHENG Dewen
This data set includes cathodoluminescence images (CL images) of detrital zircons from sandstone of Late Carboniferous-Late Permian strata in the Southern Qiangtang terrane and Early Cretaceous Hauterivian-Albian strata in the Bangong‐Nujiang suture zone, Tibetan Plateau. The sampling and shooting time is 2018-2019. The sampling areas of Late Carboniferous-Late Permian strata are Jiaco and Ritu areas of the Southern Qiangtang terrane. The sampling areas of Early Cretaceous Hauterivian-Albian strata are Baerqiao, Mabujiaco, Duochang and Kama areas of the Bangong‐Nujiang suture zone. CL images were taken in the Continental Dynamics Laboratory, Chinese Academy of Geological Sciences, Beijing, China These data provide a key limit for understanding the closing of the Bangong‐Nujiang suture zone. The opening time of Bangong‐Nujiang Ocean is limited to 300-279Ma, and the closing time is limited to 110-100 Ma, which is of great significance to explore the tectonic evolution of Tethys Ocean. The related articles of the data set have been published in the well-known journals《Palaeogeography, Palaeoclimatology, Palaeoecology》,《Tectonics》,《Geoscience Frontiers》, and the data results are true and reliable.
FAN Jianjun
13C and 18O isotopic test results of late Pleistocene lacustrine mudstone deposits in Dunhuang basin and some horizons in Jiuxi basin since Miocene. The testing unit is the Key Laboratory of mineralization and resource evaluation, Institute of mineral resources, Chinese Academy of Geological Sciences, and the instrument used is mat 253 gas isotope mass spectrometer. The data quality is good and within the error range. The 13C and 18O isotopic data of Dunhuang basin indicate that the lacustrine sediments in Dunhuang basin were in the late Pleistocene, and the overall climate was arid. The 13C and 18O isotopic data of Jiuxi basin indicate that although there are slight differences in different regions of Jiuquan Basin since Miocene, the climatic conditions are basically the same. It has been under relatively dry climatic conditions for a long time, while the Holocene profile shows an obvious change trend due to a short time range, which may indicate that the climate has fluctuated greatly since Holocene.
ZHANG Bo
This data set is the zircon cathodoluminescence image data (CL image) and chronology data set of rencuo ophiolite in the central Qinghai Xizang Plateau. The lithology of the sample includes gabbro, diabase and plagioclase granite. The formation age is about 160-150ma, and the sampling and shooting time is 2019-2020. The separation of zircon was completed in Hebei Regional Geological Survey Institute. Conventional heavy liquid and magnetic separation methods were used for separation, and finally pure zircon was selected under binocular microscope. The sample target was prepared in the Institute of geology, Chinese Academy of Geological Sciences. The diameter of the sample target was 25 mm. The cathode fluorescence image analysis of zircon was completed on the cathode fluorescence analysis system of Institute of geology, Chinese Academy of Geological Sciences (Hitach s-3000n field emission environmental scanning electron microscope and chroma cathode fluorescence spectrometer of Gatan company). Zircon U-Pb dating data were obtained by shrimp II ion probe of Beijing ion probe center, and the data accuracy was ~ 0.5-1ma. These data provide a key limit for understanding the formation and evolution of the Tethys ocean in the Qinghai Tibet Plateau, and have comparative significance for the study of oceanic zircons. The data association results have been published in the Geological Society of America Bulletin. The data results have been peer reviewed and the data quality is true and reliable.
TANG Yue TANG Yue
Data content: A large number of strongly deformed quartz veins are developed in the Ramba Dome, which records the fluid activity information in the extensional structure. Raman analysis of inclusions in quartz veins in the footwall and hangingwall of the STDS show that the main liquid phase component of inclusions is H2O and the gas phase components are CO2 and CH4. The existence of CO2 and CH4 represents the contribution of deep source fluids. The main source of CO2 is related to regional and contact metamorphism in the Ramba Dome. This data set has been published in the geological journal. Data source and processing method: The experimental work is mainly studied by WiTEC GmbH micro confocal Raman spectroscopy imaging system (alpha300R). The Raman experimental data analysis is completed in the laboratory of WiTEC Beijing demonstration center, using 532 nm laser as excitation light source, and the Raman spectral data is processed by WiTEC Project Five software. Data quality: The scanning area is 8 µm × 7 µ m, including 504 pixels, the integration time of each pixel is 1s, the spatial resolution is 350 nm, the data quality is high and the reliability is strong. Data application achievements and prospects: Through the analysis of mineral facies of inclusions, we observed the spatial distribution, correlation and chemical differences of different components of gas-liquid phase in quartz vein inclusions in Ramba Dome. The experimental method is based on the fast Raman imaging technology with high sensitivity and high resolution, which solves many difficult tests pain points in the geological field. At the same time, WiTEC Raman system provides excellent expansion performance for many scientific research workstations with its open structure, which greatly reduces the difficulty of realizing various in-situ experiments such as high and low temperature, high pressure, and reaction process.
LI Xiaorong, ZHANG Bo
This data set contains zircon U-Pb dating, zircon Hf isotope, whole rock principal and trace elements, and whole rock SR Nd isotope data of Cambrian and cryogenian granites in Anduo area, Qinghai Tibet Plateau, from Zhai Qingguo team of Institute of geology, Chinese Academy of Geological Sciences. The data are of good quality and can be used for the study of the early formation and evolution of the Qinghai Tibet Plateau and the paleogeographic reconstruction of the Precambrian supercontinent. The main analytical instruments used include: Zircon U-Pb age is obtained by laser ablation – inductively coupled plasma – mass spectrometry (LA-ICP-MS), and zircon Hf isotope is obtained by a NWR 213nm laser ablation microprobe attached to a multicollector ICP – MS (Neptune plus), The major and trace elements in the whole rock were obtained by X-ray fluorescence Shimadzu (xrf-1800) and analyticjena pqms elite ICP – Ms.
TANG Yue TANG Yue
This data set contains zircon U-Pb dating, zircon Hf isotope, whole rock major and trace elements, and whole rock SR Nd isotope data of Cambrian magmatic rocks in the central Qinghai Tibet Plateau, from Zhai Qingguo research team, Institute of geology, Chinese Academy of Geological Sciences. The data quality is excellent, which can be used for the study of the early formation and evolution of the Qinghai Tibet Plateau and the paleogeographic reconstruction of the Precambrian supercontinent, as well as the reconstruction of global ancient plates and paleogeographic restoration. This provides key information for understanding the early evolution of the Qinghai Tibet Plateau. Zircon U-Pb dating data were obtained by shrimp II ion probe, and zircon HF isotopes were obtained by Neptune multicollector (MC) ICP-MS equipped with a geolas 200 m ARF exciter 193 nm laser ablation system.
TANG Yue TANG Yue
Data content: This data set is the quantitative comprehensive mineral facies analysis data of tectonite from RAMBA gneiss dome obtained by the Tescan Integrated Mineral Analyzer. The data includes the type, content, structural characteristics, distribution characteristics of the whole mineral facies in the tectonite, as well as the type, abundance and main hosted mineral facies information of the full spectrum elements. Data source and processing method: The data were obtained by four high spatial and temporal resolution EDAX energy spectrometers mounted on a Tescan field emission scanning electron microscope. The electrons outside the atomic nucleus of a measuring point on the mineral surface are bombarded by a high-energy electron beam, the transition between different energy levels or excited to escape into free electrons and release photons with a certain energy. The type and content of the mineral element can be accurately calibrated by the signals captured by different energy channels of the energy spectrum detector. Then, automatic comparison and matching are carried out in the database with nearly 5000 mineral phases, so as to fulfill the accurate determination of mineral phases and the element abundance mapping. The voltage is 25 kV, the working distance is 15mm, and the spot size is 100nm. Data quality description: Due to four energy spectrum detectors being equipped, the data acquisition time is short, the accuracy is high, the requirements for sample morphology are low, the detection limit is low, the data quality is very high and strongly reliable. Data application achievements and prospects: Sample size is 27mm x 47mm standard optical thin section, scanning area is full slice scanning with High-resolution scanning mode, and the step size is set to 1μm. Through data analysis, we have obtained the mineral assemblage characteristics of each structural unit of the Ramba gneiss dome, completed the metamorphic grade and metamorphic facies zoning, and put forward the structural thermal evolution model of the Ramba gneiss dome. This technic has been widely recognized and used in structural geology, petrology, geochronology, ore selecting, metallurgy, metal processing and manufacturing, and other disciplines and industries.
CHEN Siyu
This data includes zircon U-Pb dating of metamorphic rocks and basalts in the Precambrian continental crust remnant in the northwest of the North Qilian orogenic belt measured from 2019 to 2021, major and trace and Sr nd Hf isotopic geochemical test results of the whole rock, and major and trace geochemical test results of minerals. The main instruments used are Aglient 7500a ICP-MS, X-ray fluorescence (XRF), inductively coupled plasma mass spectrometry (ICP-MS), thermo Finnigan Triton thermal ionization mass spectrometer (TIMS), Neptune MC ICPMS and electron microprobe (EMPA). The data quality is high and within the error range. According to the data, the Precambrian continental crust fragments can be divided into three stages: Paleoproterozoic (1.7 GA), early Mesoproterozoic (1.6 GA) and middle Mesoproterozoic (1.5-1.2 GA), which were formed in the continental margin arc, intracontinental rift and initial ocean basin environment respectively. It is revealed that the Qilian block is located in the southwest of the core of the ancient lombia supercontinent.
LIU Yixin
Contact Support
Northwest Institute of Eco-Environment and Resources, CAS
0931-4967287
poles@itpcas.ac.cn
Links
National Tibetan Plateau Data CenterFollow Us
A Big Earth Data Platform for Three Poles © 2018-2020 No.05000491 | All Rights Reserved
｜ 
No.11010502040845
Tech Support: westdc.cn
