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.
ZHANG Qinghai
The data include the carbonate content, carbon isotope and oxygen isotope analysis results of inorganic carbonates of 79 samples from 850 m natural section of the middle late Eocene in the salkuli basin. The carbon and oxygen isotopes of carbonate in the sediments record the hydrological and vegetation information in the geological history, which is one of the main indicators of paleoenvironmental tracer research. After grinding and sieving, the carbon and oxygen isotope analysis is completed by the sample processing unit (carbonate device) and MAT252 isotope mass spectrometry online automatic online system. The analytical accuracy of the sample is: carbon isotope is better than ± 0.06 ‰, and oxygen isotope is better than ± 0.08 ‰. Through the analysis of carbon and oxygen isotope data of solkuli section, the evolution history of arid environment since Eocene can be reconstructed, and the paleoclimate effect of the Tibetan Plateau uplift and global climate change can be discussed.
SUN Jimin
Guided by plate tectonics, palaeogeography, petroleum basin analysis and sedimentary basin dynamics , a large number of data and achievements in recent years of geological and petroleum geology research in Pan-Third Pole have been collected, including basic materials such as strata, sediments, palaeontology, palaeogeography, palaeoenvironments, palaeoclimate, structure, petroleum (sylvine) geology, especially Palaeomagnetism and palaeozoic. On the basis of material, detrital zircon and geochemical data, and combined with the results of typical measured stratigraphic profiles, the lithofacies and climatic palaeogeographic pattern of the Triassic period were restored and reconstructed, and the Palaeogeographic distribution of Early, Middle and Late Triassic lithofacies in Pan-Third Pole area as well as the paleoclimatic distribution maps were obtained, aiming at discussing the control and influence of palaeogeography, palaeostructure and Palaeoclimate on hydrocarbon (potassium-bearing) resources In order to reveal the geological conditions of oil and gas formation and the law of resource distribution, and provide scientific basis and technical support for overseas and domestic oil and gas exploration and deployment in China. The boundary line between different lithofacies and climate is clear, which better reveals the paleogeographic pattern of lithofacies and climate in the Triassic period, which is of certain indicative significance for the study of the control and influence of paleogeography, paleostructure and paleoclimate on oil and gas (including potash) resources, as well as the geological conditions for the formation of oil and gas and the distribution of resources.
LI Yalin
The Southern Tibet Rift System (STRS) is one of the most prominent tectonic and geomorphological features in the southern Tibetan Plateau. The Jilong-Oma and Dati basins are located in the northern Himalaya Mountains. The late Cenozoic sedimentary sequences deposited in these two rift basins have archived abundant information about formation and evolution of the STRS and the uplift process of the Tibetan Plateau. The detailed stratigraphic and sedimentologic investigations were conducted on the late Cenozoic sediments in the Jilong-Oma basins. The late Cenozoic sediments in the Jilong-Oma Basin is over 610 m in thickness, including the lower conglomerate member of the fan delta facies (Danzengzhukang Fm., 400-600 m), the middle mudstone interbedded with sandstone member of fluvio-lacustrine facies (Oma Fm., 200-400 m) and the upper conglomerate intercalated with mudstone member of alluvial fan facies (Gongba Fm., 200-0 m). The Hipparion fossils were previously found at the bottom of the Oma Fm. The late Cenozoic sediments in the Dati Basin have a thickness of ~300 m, iucluding the lower mudstone, sandstone and sandy conglomerate member of fluvio-lacustrine faceis (Dati Fm., 80-305 m), and the upper conglomerate member of alluvial fan facies (Gongba Fm., 80-0 m). The Hipparion fossils were previously found at the upper part of the Dati Fm. By comparing with the Zhada Basin in the west part of the Himalaya orogen, it shows that these rift basins experienced the similar sedimentary evolution history and have the comparable Hipparion fossils. Establishing the precise chronology of these sediments and carrying out comprehensive comparison analyses between the rift basins play important roles in understanding the formation and evolution of the STRS, the uplift and deformation processes of the southern Tibetan Plateau and the climate change in the surrounding areas.
ZHANG Weilin
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 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
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