This data is the grain size data set of the XS loess section at Ganzi in the east of Qinghai Tibet Plateau. The whole section is 10 meters thick, and the grain size analysis is carried out according to the interval of 2.5cm. A total of 398 groups of grain size data are obtained. The grain size analysis was carried out at the Key Laboratory of Western China's Environmental Systems（Ministry of Education), Lanzhou University. Before the measurement, the organic matter and carbonate in the sample were removed by H2O2 and hydrochloric acid, then adding the sodium hexago-hydrophosphate and vibrating for about 10 min to disperse samples by using ultrasonic apparatus. All measurements are conducted by using the Mastersizer 2000. This data reflects variations of the loess grain size since the last interglacial, which is of great importance for understanding past evionroment changes in the eastern Tibet Plateau.
The data set integrated glacier inventory data and 426 Landsat TM/ETM+/OLI images, and adopted manual visual interpretation to extract glacial lake boundaries within a 10-km buffer from glacier terminals using ArcGIS and ENVI software, normalized difference water index maps, and Google Earth images. It was established that 26,089 and 28,953 glacial lakes in HMA, with sizes of 0.0054–5.83 km2, covered a combined area of 1692.74 ± 231.44 and 1955.94 ± 259.68 km2 in 1990 and 2018, respectively.The current glacial lake inventory provided fundamental data for water resource evaluation, assessment of glacial lake outburst floods, and glacier hydrology research in the mountain cryosphere region
This data set comes from shallow marine carbonate sections at Tingri and Gamba, south Tibet. The age of these samples is about 56 Ma (at the Paleocene-Eocene boundary). At Tingri, we studied two parallel sections (13ZS section and 10-11TM section), and at Gamba, we studied one section (11TMG). From the 13ZS section, we analyzed carbon and oxygen isotopic compositions and calcium carbonate content of the whole carbonate rock, as well as the in-situ carbon isotopic compositions and element contents of the foraminifera shell. From the 10-11TM section, we analyzed carbon, oxygen and strontium isotopic compositions of the whole rock. From the 11TMG section, we analyzed carbon and oxygen isotopic compositions of the whole carbonate rock. Carbon and oxygen isotopic compositions of the whole rock were measured by gas isotope mass spectrometer (MAT251), strontium isotope by thermal ionization mass spectrometry (TIMS), calcium carbonate content by acid dissolution, in-situ carbon isotopic compositions by SIMS, and in-situ element contents by LA-ICPMS. Among these data, in-situ carbon isotope data were obtained from the laboratory of Professor John Valley at the University of Wisconsin-Madison in the United States, and the rest are from the relevant laboratories of the Department of Geosciences at the University of Bremen in Germany. Based on these data, we published three peer-reviewed papers on Journals of Gondwana Research, GSA Bulletin, and Global and Planetary Change.
Data source description: The data are generated by arranging the literature. Test method: zircon U-Pb isotope LA-(MC)-ICPMS test; Re-Os isotope dilution method TIMS test. Data processing method: The data are automatically acquired by the analytical instrument, and the dating data are calculated using ISOPLOT software. The accuracy of the raw data: The accuracy of the zircon age test is shown in the error analysis value in the table; the accuracy of the Re-Os isotope analysis is shown in the error analysis value in the table. Data generating process: The first author personally analyzes and obtains the data, strictly in accordance with the experimental specifications Applications: Geology Data accuracy after processing: The accuracy of the processed data table is basically consistent with the analysis accuracy. The data contains 2 tables: (1) Zircon U-Pb isotope age analysis results table and (2) Whole rock and spinel Re-Os isotope 7 U-Pb zircon age data and 5 Re-Os isotope data. Data Types: Table 1: Zircon U-Pb age Data type: digital Table 2: Whole rock and spinel Re-Os isotopes Data type: digital Dimensions (unit of measure): "Zircon U-Pb age" dimension: Ma, "Re-Os isotope" dimension: ratio
Data source description: The data are generated by arranging the literature, and the references are as follows:  Huang, QS, Shi, RD, O'Reilly, SY, Griffin, WL, Zhang, M., Liu, DL, Zhang, XR, 2015. Re-Os isotopic constraints on the evolution of the Bangong-Nujiang Tethyan oceanic mantle, Central Tibet. Lithos, 224–225: 32-45. Test methods: major elements XRF test; trace elements ICP-MS test; mineral EPMA test; whole rock Re-Os isotope dilution method TIMS test; in situ sulfide LA-MC-PMS test. Data processing method: The data are automatically acquired by the analytical instrument, and the dating data are calculated using ISOPLOT software. The accuracy of the raw data: The accuracy of the major element analysis is 1-5%; the accuracy of the trace element analysis is 10%; and the accuracy of the Re-Os isotope analysis is shown in the error analysis value in the table. Data generation process: The first author has personally analyzed and obtained the data strictly in accordance with the experimental specifications. Applications: Geology Data accuracy after processing: The accuracy of the processed data table is basically consistent with the analysis accuracy. The data contain 7 tables. (1) Composition of major elements of peridotite whole rock (2) Re-Os isotope of peridotite whole rock (3) Sulfide Re-Os isotope (4) Trace elements in peridotite whole rock (5) Peridotite composition (6) Spinel composition (7) Sulfide composition 25 sets of composition data of major elements of peridotite whole rock; 42 Re-Os whole rock; 13 Re-Os sulfides; 25 trace whole rocks; 40 peridotite composition; 52 spinel composition; 16 sulfide composition. Data types: Table 1: Whole rock major elements Data type: digital Table 2: Whole Rock Re-Os Isotope Data type: digital Table 3: Sulfide Re-Os isotope Data type: digital Table 4: Whole rock trace elements Data type: digital Table 5: Peridotite composition Data type: digital Table 6: Spinel composition Data type: digital Table 7: Sulfide composition Data type: digital Dimensions (unit of measure): "whole rock major elements composition" dimension: percentage%; "Re-Os isotope" dimension: ratio; "trace element" dimension: ppm; "mineral composition" dimension: percentage%
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
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.
This data set contains a deep drilling paleomagnetic age data near the open sea in the middle reaches of Heihe River. The borehole is located at 99.432 E and 39.463 n with a depth of 550m. The samples of paleomagnetic age were taken at the interval of 10-50 cm. The paleomagnetic test was carried out in the Key Laboratory of Western Ministry of environmental education of Lanzhou University. The primary remanence of the samples was obtained by alternating demagnetization and thermal demagnetization, and the whole formation magnetic formation was obtained by using the primary remanence direction of each sample, and then the sedimentary age of the strata was obtained by comparing with the standard polarity column. The results show that the bottom boundary of the borehole is about 7 Ma and the top boundary is 0 ma.
HU Xiaofei PAN Baotian
Natural changes and human impacts of typical karst environments in historical periods: stalagmite recording project is a major research program of "Environmental and Ecological Science in Western China" sponsored by the National Natural Science Foundation of China. The person in charge is Tan Ming, a researcher at the Institute of Geology and Geophysics, Chinese Academy of Sciences. The project runs from January 2002 to December 2009. The temperature data of Beijing hot months (May, June, July and August) in 2650 (665 B.C.-A.D. 1985) are the results of the project. The data are reconstructed according to the correlation between the annual thickness of stalagmites in Shihua Cave in Beijing and meteorological observation data. The temperature signals reflected by soil carbon dioxide and cave dripping are amplified by the soil-organic matter-carbon dioxide system and recorded by the annual sequence of stalagmites. Although the general trend of temperature has decreased in recent thousands of years, the reconstructed temperature reveals that the climate has experienced repeated rapid warming on a century scale. This result is related to other records in the northern hemisphere, indicating that there is a hemispheric influence on the periodic changes of temperature in the sub-millennium scale. The data contains a txt file with attribute fields such as yr.AD, layer number, original thickness (um), maximum error in um (+-), sedimentary trend, detrended thickness (um), reconstructed temperature, maximum error in degree C (+ -), temperature anomaly, temperature anomaly + error, temperature anomaly-error, maximum error in age (yr. +-).
TAN Ming ZHANG Hucai LI Tieying