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
Dating data of debris flow and dammed lake sediments in complex mountainous areas from 2019 to 2021. The data collection sites are complex mountainous areas prone to debris flow in the eastern and southern edges of the Qinghai Tibet Plateau. The experimental analysis is mainly completed in the salt lake chemical analysis and testing center of Qinghai Salt Lake Research Institute of Chinese Academy of Sciences and the analysis and testing center of Chengdu Mountain Institute of Chinese Academy of Sciences. The instruments used include RIS ø TL / OSL – Da – 20 automatic luminescence instrument, etc. The age data set of debris flow sediments in typical complex mountainous areas is established, the formation age of debris flow sediments in complex mountainous areas is quantitatively studied, and the ancient debris flow disaster activity history in complex mountainous areas is determined.
HU Guisheng
1) Data content: this database includes spatial scope: ① Qinghai Tibet Plateau and Xinjiang in China; ② Central Asia (Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan); ③ West Asia (Pakistan, Afghanistan, Iran); ④ Southeast Asia (Thailand, Vietnam, Laos, Myanmar, Cambodia). The data content mainly includes: ① 1:5 million geological data set (geological body and structure); ② 1:1 million geological and mineral data sets of various countries (geological body, structure and mineral resources); ② Metal mineral data sets (deposits, occurrences, mineralized spots); ③ Xinjiang Central Asia metallogenic geological background data set (rock formation assemblage, tectonic zoning, metallogenic zone, prospective area, target area and minerals); Main maps include: Pan third pole geological and mineral map (1:5 million), geological and mineral map of four Central Asian countries (1:1.5 million), geological and mineral map of Pakistan (1:1 million), geological and mineral map of Afghanistan (1:1 million), geological and mineral map of Iran (1:1 million), geological and mineral map of Xinjiang Central Asia corridor in China (1:2.5 million), metallogenic law map of Xinjiang Central Asia corridor in China (1:2.5 million) Geological and mineral map of Qinghai Tibet Plateau in China (1:1.5 million). The spatial database adopts ArcGIS platform, which can provide basic data support for regional metallogenic law research, resource potential evaluation, strategic prospect area delineation and various thematic maps. The database format is file database (. GDB), and drawings include engineering files (MXD) and grid diagrams (jpg). Various common graphics formats (PDF, TIF, EPS, etc.) can also be generated as required. The pan third pole region (1:5 million) adopts Lambert Conformal cone projection, with the central longitude of 84 degrees east longitude and double latitudes of 20 degrees and 55 degrees respectively. The geological and mineral data of China's Xinjiang Central Asia corridor belt adopts Lambert isometric conic projection. The central longitude is 75 degrees east longitude and the double latitudes are 30 degrees and 50 degrees respectively. The 1:1 million geological and mineral data of major countries in central and West Asia adopt Lambert isometric conic projection, and the central longitude and double latitude are determined according to the location of each country. 2) Data source and processing method; The basic geological data are mainly from the geological map of Asia (2015) (1:5 million), the tectonic metallogenic map and geological map of Central Eurasia (2008) (1:2.5 million), and the geological map of geological survey departments of various countries in the region (1:1 million); ② The main sources of mineral data include the results of the national mineral resource potential evaluation project (2012), the Central Asian mineral database and thematic map of the natural history museum in London, UK (2014), the Afghanistan data set of the U.S. Geological Survey (2008), relevant data of geological survey departments of various countries in the region, and papers on minerals in the region. In addition, in order to meet the modification and improvement of various data, a large number of remote sensing data are used, including image data such as ETM +, oli, aster and worldview, as well as 90m, 30m and 12.5mdem data. 3) Data quality description; In order to meet the needs of the study of metallogenic law in Pan third pole region and the preparation of geological and mineral map and metallogenic prediction map, the data spatial accuracy, logical consistency and data integrity are edited, processed and supplemented. Specifically, it includes: ① vectorization. A lot of vectorization work has been carried out based on the above data to supplement the missing areas of digital data (Iran and Pakistan). At the same time, various surface elements and line elements are combined and divided according to the degree of data update. The vectorization work is completed according to the requirements of relevant specifications and scale accuracy in China; ② Topology processing to eliminate topology errors such as overlapping surfaces and empty areas; ③ Improve the element attribute structure and supplement the element attribute content, focus on the preparation objectives of regional metallogenic law research, geological and mineral map and metallogenic prediction map, establish the corresponding data model according to China's relevant specifications and combined with specific data and data content, improve the attribute structure of geological body, structure and mineral elements, and complete the filling in of corresponding attributes; ④ Based on the above data processing contents, combined with the pan third pole research results and the latest understanding, the relevant geological contents in the area have been further modified and improved. 4) Data application achievements and prospects: the pan third pole geological and mineral database mainly serves the pan third pole region, important metallogenic belts and national and regional metallogenic law research, and the preparation of geological and mineral map and metallogenic prediction map. The scale is 1:5 million (Pan third pole region), 1:2.5 million (Xinjiang Central Asia corridor belt in China), and 1:1 million (important metallogenic belts and countries in central and Western Asia).
LIU Yan
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 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
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
The data are the major and rare earth element geochemical data, zircon trace element, U-Pb age and Hf-O isotope data of the early Cretaceous granites in the Qinghai Tibet Plateau. The samples are S-type granite from Naqu area, and the lithology is monzogranite. The major and rare earth element geochemical data of the samples were obtained by AAS and ICP-OES, respectively. Zircon U-Pb age and REE data were obtained by LA-ICP-MS and SHRIMP analysis, and Lu-Hf isotopic composition was obtained by LA-MC-ICP-MS analysis. O isotopic composition was obtained by SHRIMP analysis. The above data have been published in SCI Journal (International geology review), and the data are true and reliable. The obtained data can be used to study the provenance of Lhasa terrane and the possibility of preserving ancient crust.
SUN Saijun
In this project, the garnet Staurolite mica schist in xiangtaohu area of central Qiangtang was systematically analyzed by petrology, mineralogy, detrital zircon and Muscovite ar Ar dating. Petrological and mineralogical studies show that the samples underwent the superposition of early blueschist facies and late amphibolite facies metamorphism. Detrital zircon analysis shows that the samples were derived from Carboniferous island arc magmatism in the hanging wall of the subduction zone. The AR AR results of Muscovite are 263-259 Ma, which represents the cooling age of the diapir after it entered the middle and lower crust of the hanging wall. This study reveals the subduction erosion during the subduction of oceanic plate from the perspective of metamorphic evolution for the first time, and suggests that the special rocks exposed in the low temperature / high pressure metamorphic belt may have important implications for identifying the subduction erosion in the ancient subduction zone.
ZHANG Xiuzheng
This dataset is the result of LA-ICPMS zircon U-Pb isotopic dating of granites in Bangong, Gaize, Dongqiao and Anduo areas on the southern margin of Qiangtang. The data are obtained according to the laboratory standards, and the data quality meets the laboratory requirements. It is mainly used for the geological research of the Tibetan Plateau. The fields included in the data are as follows: Analysis Element concentration: Th (ppm) | U (ppm) | Th/U Isotope ratio: ²⁰⁷Pb/²⁰⁶Pb | ²⁰⁷Pb/²³⁵U | ²⁰⁶Pb/²³⁸U | 1s Age (Ma): ²⁰⁷Pb/²⁰⁶Pb | ²⁰⁷Pb/²³⁵U | ²⁰⁶Pb/²³⁸U | 1s Discordant (%) *
LIU Deliang
The data set mainly includes P-wave and S-wave receiver functions calculated from the waveform data collected at the southern station of the ANTILOPE-1 array, which is located in the western part of the Tibetan Plateau. This array was established by the Antelope Project of the International Lithosphere Exploration Research Program in the Tibetan Plateau. The pulse deconvolution method was applied to the time domain to calculate the receiver function. All of the receiver function data were visually inspected to remove low-quality records that were significantly different from the majority of the receiver functions. The data set was compressed into a zip format file containing two folders: ANTILOPE-1-PRF and ANTILOPE-1-SRF, where PRF and SRF represent the P-wave receiver function and the S-wave receiver function, respectively. All P-wave and S-wave receiver function data were placed in the corresponding folders. The data are mainly used to investigate the lithospheric structure and reveal the deep dynamics of plateau uplift.
XU Qiang
This data set collected zircon U-Pb isotope age data of the granites in the southern Qiangtang terrane of the Tibetan Plateau from articles published before October 2014. The data were analyzed by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICPMS), Sensitive High-Resolution Ion Microprobe (SHRIMP), and Isotope Dilution Thermal Ionization Mass Spectrometry (ID TIMS). The data were obtained according to laboratory standards, and the data quality met laboratory requirements. The data contents are as follows: Region Locality Lithology Sample No. Dating method Age (Ma) References
LIU Deliang
This data set is the result of systematic zircon Hf isotope testing performed on granites in the Bangong Lake, Gaize, Dongqiao and Anduo areas of south Qiangtang using the multireceiving Laser Ablation Multi-Collector Inductively Coupled Plasma Mass Spectrum (LA-MC-ICP-MS) method. The data were obtained according to laboratory standards, and the quality met laboratory requirements. The data are mainly used in geological research of the Tibetan Plateau.
LIU Deliang
This data set collected the age data of ophiolite along the Bangong-Nujiang on the Tibetan Plateau in the literature published before October,2014. The data were analyzed by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICPMS), Sensitive High-Resolution Ion Micro Probe (SHRIMP), Isotope Dilution Thermal Ionization Mass spectrometry (ID TIMS), Secondary Ion Mass spectrometer (SIMS), etc. The data were obtained according to laboratory standards and the quality meets laboratory requirements. Data fields: Area Location Rock type Sample No. Target mineral" Method Age Reference Interpretation Notes
LIU Deliang
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