Zircon ion probe data set of Yanshanian intermediate acid rocks in the northern margin of North China and its adjacent areas

This data is zircon U-Pb age data of Yanshanian intermediate acid rocks in the northern margin of North China and its adjacent areas. Zircon U-Pb dating was completed using cameca ims-1280hr in the ion probe Laboratory of Institute of Geology and Geophysics, Chinese Academy of Sciences. The U-Th-Pb isotope ratio was obtained by the calibration of standard zircon Pl e sovice. Simultaneous interpreting of the standard deviations obtained from the long-term monitoring of standard samples and the accuracy of the single point test were used to obtain the sample single point error, taking the standard sample Qinghu as the accuracy of the unknown sample monitoring data. The measured 204Pb value is used for ordinary Pb correction. The isotopic ratio and age error are all 1 σ。 Harmonic age and mean age were calculated using isoplot software. Through the obtained data, we can find out the temporal and spatial distribution of magmatism in the study area, establish the chronological framework of the northern margin of North China and its adjacent areas, and provide chronological basis for further study of geodynamic mechanism in this area.

0 2021-09-22

Zircon Hf isotopic data set of Yanshanian intermediate-acid rocks in the northern margin of North China and its adjacent areas

This data is the Hf isotopic geochemical data of zircon microregions of Yanshanian intermediate acid rocks in the northern margin of the North China Craton and its adjacent areas. The experimental instrument is multi receiver inductively coupled plasma mass spectrometer (MC - ICP - MS), and the testing unit is Tianjin geological survey center of China Geological Survey. Some data have been published in high-level SCI journals, and the data are true and reliable. Through the obtained data, the variation law of zircon Hf isotopic composition in the study area can be found out, which can provide deterministic evidence for identifying the magmatic source area and specific magmatic process in the study area, and then provide new constraints on the Yanshanian tectonomagmatic evolution in the area.

0 2021-09-22

Sedimentary physicochemical indicators and typical landscape, landform and sedimentary photos of the Yarlung Zangbo River Basin (July 2019-august 2019)

The data are the typical landscape, geomorphology and sedimentary strata photos obtained by the thematic group in the lower reaches of Yajiang River and Niyang River Basin from July to August 2019, as well as the physical and chemical indexes of loess and river sediments, mainly including: (1) 14C sample sampling and age in the lower reaches of Niyang River; (2) Chronological results of OSL in the lower reaches of Niyang River; (3) XRF of lacustrine sediments and Langou loess in the lower reaches of Niyang River; (4) Magnetic susceptibility of Lamawan lacustrine sediments and Langou loess in the lower reaches of Niyang River; (5) Grain size of Langou loess in the lower reaches of Niyang River; (6) Elements in the lower reaches of Yarlung Zangbo River and Niyang River Basin. The photos mainly show glaciers, rivers, lakes and other landscapes, as well as landslide surface, glacier shear surface and sedimentation.

0 2021-09-09

Whole rock Sr-Nd isotopic data set of Yanshanian intermediate acid rocks in the northern margin of North China and its adjacent areas

This data is SR Nd isotopic geochemical data of Yanshanian intermediate acid rocks in the northern margin of North China and its adjacent areas. SR Nd isotope data were obtained by MC-ICP-MS analysis. Some data have been published in high-level SCI journals, and the data are true and reliable. SR Nd isotopic data can find out the variation law of isotopic composition in the study area. It is an important part of Geochemistry and geochronology. It is one of the most important tracing means to explore rock genesis and crust mantle evolution. This data can provide a trace of the magma source area in the northern margin of North China and its adjacent areas. It is an effective way to explore the genesis of intermediate acid rocks in this area, and provide support and help for the further study of regional geodynamic mechanism.

0 2021-09-06

Whole rock Mg isotope data set of Yanshanian intermediate acid rocks in the northern margin of North China and its adjacent areas

The data are the whole rock mg isotopic geochemical data of Yanshanian intermediate acid rocks in the northern margin of North China and its adjacent areas. The whole rock mg isotope data were obtained by MC-ICP-MS analysis. During the whole test period, the indoor standard samples were analyzed and tested, and the results were consistent with the previous reported data of the same standard sample within the error range, which showed that the Mg chemical composition process of the sample did not produce fractionation caused by improper manual operation. In addition, the test results of international standard samples mag-1 (mudstone standard sample), bhvo (basalt standard sample), andesite standard sample and rhyolite standard sample are also consistent with the previously published data, which further ensures that the artificially introduced fractionation is generated in the whole set of chemical treatment process including dissolved samples. Finally, the repeated analysis of the same sample has obtained consistent results, which proves the good reproducibility of Mg isotope test. Through the obtained data, the variation law of isotopic composition in the study area can be found out, the properties of rock source area, melting conditions and magmatic evolution process can be analyzed in detail, and the dynamic process of tectonic magmatic process can be traced.

0 2021-09-06

Sulfide S isotope data set of Yanshanian intermediate acid rocks in the northern margin of North China and its adjacent areas

This data is sulfide sulfur isotope data of Yanshanian intermediate acid rocks in the northern margin of North China and its adjacent areas. Sulfide S isotope data were obtained by la-mc-icp-ms analysis. The S isotope data of sulfide has not been published, and the data are true and reliable. The s isotopes of sphalerite and pyrite can define the variation law of S isotopic composition in the study area. A detailed analysis of the properties of rock source area, melting conditions and magmatic evolution process is of limited significance for tracing the dynamic process of tectonic magmatic process

0 2021-09-03

Dataset of Major Elements and Isotopes of Longmen and Tangnaihai Hydrological Stations in the Yellow River (2012-2014)

The study of chemical weathering is of great significance to understand how the plateau uplift regulates the mechanism of climate change and the circulation of elements and materials in the sphere. The data set is the seasonal major element concentration and stable isotope data of the river water at the hydrological station of the Yellow River Basin originating from the Qinghai Tibet Plateau. There are two hydrological stations in total: 1. Longmen hydrological station in the middle reaches of the Yellow River is the high-resolution (weekly) sample data collected in 2013, and the element concentrations include K, CA, Na, Mg, SO4, HCO3, Cl, etc. The cation data of collected water samples are tested on ICP-AES of Institute of earth environment, Chinese Academy of Sciences, and the anion data are tested on ion chromatograph (ics1200) of Nanjing Institute of geography and lakes, Chinese Academy of Sciences. The uncertainty is within 5%, and HCO3 is tested by titration. The high-resolution (weekly) Li isotope data of river water was tested in MC-ICP-MS of Institute of earth environment, Chinese Academy of Sciences in 2017, and the test accuracy 2sd is better than 5 ‰; 2. Tangnaihai hydrological station on the Yellow River is the river water (month by month) data set collected from July 2012 to June 2014. The major element concentrations include K, CA, Na, Mg, SO4, HCO3, Cl, etc., and the stable isotope data include s, O and H. The data set can be used to study the modern weathering process under the background of the uplift of the Qinghai Tibet Plateau, and provides the first-hand reliable data for the study of physical erosion and chemical weathering in the basin.

0 2021-08-23

Carbon and oxygen isotopic features of marine carbonate rocks from the Yalai 2 section in Nyalam, Tibet (433-419 Ma)

Carbon cycle is controlled by relative changes in carbon fluxes of global atmosphere, hydrosphere, lithosphere, and biosphere. During the geological history, carbon isotope excursions usually occur in the critical period. Carbon isotope positive excursions are recognized to be related to abundant organic burial or enhanced primary productivity. Silurian δ13Ccarb curves from Euramerica have been established, but the isotopic patterns in different sections and regions can be quite different. Before the use of δ13Ccarb records to facilitate high resolution correlation, it is necessary to conduct sedimentary facies and diagenesis analyses and compare numerous isotopic records on a global scale, in order to learn the global versus local contribution in a δ13C record. 43 geochemical samples were collected from the Wenlock to Pridoli Pulu Formation for carbon and oxygen isotopic analyses, in order to reveal carbon cycling process in northern margin of Gondwana continent and alternation of carbon isotopic records during diagenesis. At the Yalai 2 section, δ13C values show a major positive shift in the Ludlow, which could be recognized in other sections around the world, indicating that major carbon cycling perturbation occurred during this time interval. This dataset include 43 carbon and oxygen isotopic records.

0 2021-07-31

Data set of activation, migration and enrichment mechanism of rare earth elements during weathering and eluviation (2017-2021)

The data of this project after sampling and testing are as follows: (1) In 2017, bedrock core samples from 2 and 3 boreholes were collected from renju rare earth mining area in Guangdong Province. After mechanical crushing, slicing and single mineral selection, they passed the Key Laboratory of minerals and mineralization, Guangzhou Institute of geochemistry, Chinese Academy of Sciences, and Australian analytical testing (Guangzhou) testing company used X-ray powder diffractometer, X-ray fluorescence spectrometer and X-ray fluorescence spectrometer The mineral composition, iron oxide composition, whole rock chemical composition, mineral chemical composition, rare earth occurrence state and other data of 2 # and 3 # boreholes in renju rare earth deposit in Guangdong Province were measured by ICP-AES, visible short wave infrared reflectance spectroscopy and electron microscope; (2) In 2018, goethite samples were synthesized in the Key Laboratory of minerals and mineralization, Guangzhou Institute of geochemistry, Chinese Academy of Sciences. The phase, morphology and surface physicochemical properties of the synthesized samples were tested by X-ray fluorescence spectrometer, electron microscope, zeta potential analyzer and other instruments; The synthetic goethite was used to simulate the adsorption of rare earth ions. The concentration of rare earth ions was measured by inductively coupled plasma emission spectrometer to characterize the adsorption capacity and adsorption behavior of rare earth ions on the surface of goethite; The surface complexation model software visual MINTEQ was used to fit the adsorption data and determine the intrinsic adsorption constants of rare earth ions. (3) In 2018, kaolinite and halloysite samples were obtained in Maoming, Guangdong Province and Linfen, Shanxi Province, respectively. The phase, morphology and surface physicochemical properties of the samples were tested by X-ray powder diffraction, scanning electron microscopy, zeta potentiometry and other instruments; The adsorption capacity and behavior of rare earth ions on kaolinite and halloysite were characterized by ICP-AES. (4) In November 2018, 32 weathering profile samples of metamorphic rocks were collected in the ion adsorption rare earth mining area of metamorphic weathering crust in Ningdu County, Ganzhou City, Jiangxi Province. After mechanical crushing, slicing, chemical sequential extraction and whole rock acid dissolution experiments, the samples were passed through the Key Laboratory of minerals and mineralization, Guangzhou Institute of geochemistry, Chinese Academy of Sciences, Aoshi analytical testing (Guangzhou) Co., Ltd. uses X-ray powder diffraction, X-ray fluorescence spectrometer, inductively coupled plasma mass spectrometry, METTLER TOLEDO five easy plus ™ The mineral composition, chemical composition, pH value of soil erosion, thin section identification and SEM image data of ion adsorption type rare earth ore profile of metamorphic rock weathering crust were produced by testing with pH meter, optical microscope and electron microscope; (5) In 2021, the survey of rare earth ore was carried out in Dongyuan County, Guangdong Province, and the sampling work of 17 sections was completed. 62 samples were collected and the ion phase extraction and chemical analysis of 62 samples were carried out; The test and analysis can provide a theoretical basis for the enrichment, migration and mineralization of rare earth elements in weathering eluvial rare earth deposits.

0 2021-07-20

Chemical composition data set of Zhijin and Weng'an phosphate rocks in Guizhou

1) This data set includes chemical composition analysis of Xinhua Phosphorite (Early Cambrian) and Weng'an Phosphorite (Sinian) in Zhijin, Guizhou Province, China, including whole rock chemical composition of Zhijin and Weng'an phosphorite in Guizhou Province, whole rock Sr-Nd-Pb isotopic analysis data of Zhijin and Weng'an phosphorite in Guizhou Province, in-situ Sr isotopic analysis of apatite in Zhijin and Weng'an phosphorite in Guizhou Province, The purpose of this paper is to give the genesis and REE enrichment mechanism of phosphorites in Guizhou from the perspective of major and trace geochemistry and isotope geochemistry; 2) The whole rock chemical analysis was conducted by Aoshi analysis and testing (Guangzhou) Co., Ltd., the whole rock SR nd Pb isotope analysis was conducted by Guizhou Tongwei Test Technology Co., Ltd., and the apatite in situ Sr isotope analysis was conducted by Beijing Kehui Analysis Technology Co., Ltd; 3) The data set can well show the chemical composition and isotopic geochemical information of Zhijin phosphate rock and Weng'an phosphate rock in Guizhou; 4) This data is of great significance for a detailed understanding of the formation process and REE enrichment mechanism of Zhijin and Weng'an phosphate deposits in Guizhou.

0 2021-07-07