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New insights on the age of the Mengyejing Formation in the Simao Basin,SE Tethyan domain and its geological implications

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Science China Earth Sciences 2021年第2期64卷 231-252页

作者： Maodu YAN Dawen ZHANG Xiaomin FANG Weilin ZHANG chunhui song Chenglin LIU Jinbo ZAN Miaomiao SHEN Key Laboratory of Continental Collision and Plateau Uplift Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 100101China College of Tourism and Environmental Resource Zaozhuang UniversityZaozhuang 277160China University of Chinese Academy of Sciences Beijing 100049China School of Earth Sciences Key Laboratory of Western China’s Mineral Resources of Gansu ProvinceLanzhou UniversityLanzhou 730000China MLR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China

Knowledge on the origin and mechanism of the large potash formation in the southeast Tethyan tectonic domain are still under debate,one of which mainly due to the controversial ages of the potash-bearing *** we present a detailed detrital zircon U-Pb geochronologic-magnetostratigraphic study of the potash-bearing Mengyejing(MYJ)Formation(Fm)from the Simao Basin.948 paleomagnetic cores and 4 detrital zircon U-Pb samples were collected from a 932-m thick Jiangcheng *** demagnetization isolated 857 primary characteristic remnant magnetization(ChRM)directions,indicated by positive reversals and fold tests and petrologic *** normal and seven reversed polarity zones were identified and correlated well with chrons C27r to C34n of the geomagnetic polarity timescale(GPTS2012),yielding the first known age sequence of>112 to~63 Ma for the MYJ *** ages for the potash bearing strata in the Simao commenced~20 Ma earlier than those in the adjacent Khorat basins,opposite to the traditional viewpoint that the former would rather correspond to the middle and lower parts of the *** the paleogeographic reconstruction of likely a pan-Simao-Khorat basin during the Cretaceous,~85 Ma would be another important potential period for future potash exploration in the Simao Basin.

关键词： Simao Basin Magnetostratigraphy Potash-bearing sequence Mengyejing Fm >112–~63 Ma Potash formation

Early tectonic uplift of the northern Tibetan Plateau

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Chinese Science Bulletin 2005年第15期50卷 1642-1652页

作者： DAI Shuang FANG Xiaomin song chunhui GAO Junping GAO Donglin LI Jijun Key Laboratory of Western China's Environmental Systems Ministry of Education of China and College of Resources and EnvironmentLanzhou University Lanzhou 730000 China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100085 China Qinghai Institute of Salt lakes Chinese Academy of Sciences Xining810008 China

The Hexi Corridor is the northmost foreland basin of the Tibetan Plateau and its formation is controlled by the northern marginal fault of Tibet, Altyn Tagh Fault (ATF)-North Qilian Shan marginal Fault (NQF), and the southern Kuantan Shan-Longshou Shan Fault (KLF). So its study is important to understanding the mechanism of Tibet formation and its influence on global climate change. The oldest Cenozoic sediments in the Corridor is the Huoshaogou Formation which consists of terrigenous fine conglomerate, sandstone, sandy mudstone and mudstone, depositing in alluvial to lacustrine and fan delta sedimentary environments. Detailed paleomagnetic measurements of this sequence at Yumen clearly reveal eleven pairs of normal and reversed polarities. Fossil mammals found around the section support that most of the observed polarities can be well correlated with chrons between 13n and 18r of the standard geomagnetic polarity time scale, yielding ages of 40.2-33.35 Ma. The mean declinations of this sequence and its immediately above stratigraphy indicate an 18.3° rapid clockwise rotation of the Hexi Corridor. Since this sequence has been strongly folded and is capped by an angular unconformity, we think that the presence of the thick alluvial fan conglomeration at the bottom of the foreland basin may indicate the initial deformation and uplift of the northern Qilian Shan. This process could occur at latest at 40.2 Ma, driven by the faults NQF and KLF that thrust onto the Hexi corridor respectively from its southern and northern margins. These faults are in an early response to the collision of India with Asia, while the unconformable termination and rotation of the Huoshaogou Formation at ～33.35 Ma indicate other early episode of rapid tectonic deformation and uplift of the northern Tibet.

关键词：中国地理青藏高原河西走廊气候特征

Magnetic properties of surface soils across the southern Tarim Basin and their relationship with climate and source materials

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Chinese Science Bulletin 2011年第3期56卷 290-296页

作者： ZAN JinBo FANG XiaoMin NIE JunSheng YANG ShengLi song chunhui DAI Shuang Center for Basin Resource and Environment Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China Key Laboratory of Western China's Environmental Systems Ministry of Education of China Lanzhou 730000 China College of Geography Science Nanjing Normal University Nanjing 210046 China

The magnetic susceptibility (χ) of surface soils on the Chinese Loess Plateau (CLP) has strong positive correlation with mean annual *** is widely accepted that ultrafine magnetite/maghemite grains produced during pedogenesis are responsible for the enhancement of χ,and loess χ on the CLP has been widely used as a proxy for the intensity of the East Asian summer ***,few works have investigated mechanisms for the enhancement of χ in the case of surface aeolian sediments in westerly-dominated inland China,north of the Tibetan *** detailed rock magnetism and grain size studies of 49 surface samples taken across the southern Tarim Basin for different rainfall/temperature/altitude conditions are *** results show that samples taken from desert have the lowest χ values and that χ of loessic sand and loess samples decreases with increasing *** addition,the rock magnetism studies suggest that the magnetic properties of surface soils across the southern Tarim Basin are mainly controlled by the concentration of coarse aeolian ferrimagnetic *** contribution of ultrafine pedogenically produced magnetic grains to χ is very limited.

关键词：塔里木盆地表层土壤磁学性质中国黄土高原材料气候青藏高原北部岩石磁学

Understanding Miocene Climate Evolution in Northeastern Tibet: Stable Carbon and Oxygen Isotope Records from the Western Tianshui Basin, China

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Journal of Earth Science 2014年第2期25卷 357-365页

作者： Zhanfang Hou Jijun Li chunhui song Jun Zhang Zhengchuang Hui Shiyue Chen Feng Xian State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences College of Earth and Environmental Sciences Lanzhou University MOE Key Laboratory of Western China's Environmental Systems Lanzhou University Graduate University of Chinese Academy of Sciences College of Geography Sciences Nanjing Normal University School of Earth Sciences Lanzhou University College of Environment and Planning Liaocheng University

To investigate climate evolution during the Miocene, especially during the Middle Mio- cene climate transition on the northeastern Tibetan Plateau, stable oxygen and carbon isotopes of car- bonates from a 288-m-thick lacustrine-fluvial sediment sequence covering the period from 17.1 to 6.1 Ma from Tianshui Basin, China, were analyzed. The relatively low stable oxygen isotope values indicate the prevalence of wet climate conditions during the period of 17.1-13.6 Ma, an interval corresponding to the well-known Middle Miocene Climate Optimum. The interval between 13.6 and 11.0 Ma （i.e., the late Middle Miocene） is marked by a progressive increase in the δ18O values, indicative of a decrease in precipitation, probably linked to the expansion of the East Antarctic Ice Sheet and global cooling since about 14 Ma. The climate in the study area continued to get drier as shown by the enrichment of the heavy oxygen isotope from 11 Ma. We attribute these stepwise climatic changes as revealed by our car- bonate δ18Orecord from the northeastern Tibetan Plateau to the sustained global cooling that may have reduced moist transport to Central Asia, which in turn led to a permanent aridification.

关键词： stable oxygen carbon isotope climate change Miocene Tianshui Basin.

Exogenous melatonin alleviated growth inhibition and oxidative stress induced by drought stress in apple rootstock

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BIOCELL 2022年第7期46卷 1763-1770页

作者： MEIGE WANG JUAN GONG chunhui song ZHENGYANG WANG SHANGWEI song JIAN JIAO MIAOMIAO WANG XIANBO ZHANG TUANHUI BAI College of Horticulture Henan Agricultural UniversityZhengzhou450002China

Drought stress is one of the major environmental obstacles that limit the production and development of apples(Malus domestica Borkh.).The role of melatonin is well known in the protection of plants under environmental *** this study,we investigated the effect of melatonin on apple rootstock *** Rehd under drought *** results showed that drought inhibited the growth of *** and dramatically reduced root surface area,root volume,the number of tips and forks,and root ***-induced growth inhibition was significantly decreased by adding *** photosynthetic rate(Pn),intercellular CO_(2)concentration(Ci),stomatal conductance(Gs),transpiration rate(Tr),were markedly reduced under drought ***,the application of melatonin could mitigate the damage to the photosynthetic apparatus and increase the quantum yield of PSII ***,generation of hydrogen peroxide(H_(2)O_(2))and superoxide radicals(O_(2)^(•–))sharply increased in apple leaves after 4 days under drought stress,and the accumulation of electrolyte leakage(EL)represented oxidative stress,while by applying melatonin under drought stress,the generation of O_(2)^(•–)and H_(2)O_(2)were significantly reduced and protected the membrane from drought *** results suggest that the adverse effects of drought can be minimized by applying melatonin to apples.

关键词： Apple Chlorophyll fluorescence Drought Melatonin Photosynthesis

Sedimentary Conditions of Evaporites in the Late Jurassic Xiali Formation,Qiangtang Basin：Evidence from Geochemistry Records

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Acta Geologica Sinica(English Edition) 2017年第1期91卷 156-174页

作者： song chunhui ZENG Yongyao YAN Maodu FANG Xiaomin FENG Ying PAN Jiaqiu LIU Xifang MENG Qingquan HU Chunhua ZHONG Sirui School of Earth Sciences ＆ Key Laboratory of Western China's Mineral Resources of Gansu Province Lanzhou University Lanzhou 730000 China CAS Center for Excellence in Tibetan Plateau Earth Sciences ＆ Key Laboratory of Continental Collision and Plateau Uplift Institute of Tibetan Plateau Research Chinese of Academy of Sciences Beijing 100101 China Lanzhou Resources ＆ Environment Voc-Tech College Lanzhou 730000 China Institute of Mineral Resources Chinese Academy of Geological Sciences ＆ Key Laboratory of Saline Lake Resources and Environment Ministry of Land and Resources Beijing 100037 China

The Qiangtang Basin（QB）, located in the central Tibetan Plateau, is a Jurassic marine basin and one of the most important prospective salt resource belts in China. In recent decades, many outcrops of gypsiferous bed have been found in the Jurassic marine strata in the basin. Salt springs with abnormally high sodium（Na-＋） contents had been identified in the Late Jurassic Xiali Formation（Fm.） in the basin in the last years. However, to date, no potash or halite deposits have been identified in the QB. Gypsum outcrops and salt springs are very important signs in the investigation of halite and potash deposits. Therefore, the Xiali Fm. is a potentially valuable layer to evaluate for the possible presence of halite and potash deposits in the basin. However, few studies have explored the formation conditions of evaporites in the unit. Here, we present detailed geochemical records from the Yanshiping section related to the study of the formation conditions of evaporites in the Xiali Fm. of the QB. Climate proxies based on the obviously increased anion concentrations of SO4（2-） and Cl-- and the significant correlation coefficients of Ca2＋-SO42-（R = 0.985） and Na-＋-Cl--（R = 0.8974） reveal that the upper member of the Xiali Fm.（the upper Xiali Fm.） formed under an arid climate and evolved into the sulfate phase or early chloride phase. Provenance proxies based on the obviously increased K-＋ and Na-＋ ion concentrations and the significant correlation coefficient of Na-＋-Cl--（R = 0.8974） suggest that the upper Xiali Fm. featured optimal provenance conditions for the possible formation of halite deposits. The regression and the semi-closed tidal flat environment in the upper Xiali Fm. were favorable for the formation of potash and halite deposits. The low Mg-（2＋） /Ca-（2＋） values（mean value = 1.82） and significant Na-＋-Cl-- correlation coefficient（R = 0.8974） also suggest that the upper Xiali Fm. is the layer most likely to contain potential halite deposits. In addition, the macr

关键词： Evaporites geochemistry Late Jurassic Xiali Formation Qiangtang Basin

Late Cenozoic high-resolution magnetostratigraphy in the Kunlun Pass Basin and its implications for the uplift of the northern Tibetan Plateau

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Chinese Science Bulletin 2005年第17期50卷 1912-1922页

作者： song chunhui GAO Dongling FANG Xiaomin CUI Zhijiu LI Jijun YANG Shengi JIN Hongbo Douglas Burbank Joseph L. Kirschvink MOE Key Laboratory of Western China's Environmental Systems(Lanzhou University) Ministry of Education & College of Earth and Environment Sciences Lanzhou University Lanzhou 730000 China Qinghai Institute of Salt Lakes Chinese Academy of Sciences Qinghai 810008 China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100085 China College of Environmental Sciences Peking University Beijing 100871China Department of Geological Sciences University of California Santa BarbaraUSA Paleomagnetics Laboratory Division of Geological and Planetary Sciences California Institute of Technology Pasadena CA 91125 USA

The Kunlun Pass Basin, located in the middle of the eastern Kunlun Mountains, received relatively continuous late Cenozoic sediments from the surrounding mountains, archiving great information to understand the deformation and uplift histories of the northern Tibetan Plateau. The Kunlun-Yellow River Movement, identified from the tectonomorphologic and sedimentary evolution of the Kunlun Pass Basin by Cui Zhijiu et al. (1997, 1998), is roughly coincident with many important global and Plateau climatic and environmental events, becoming a crucial time interval to understand tectonic-climatic interactions. However, the ages used to constrict the events remain great uncertainty. Here, we present the results of detailed magnetostratigraphy of the late Cenozoic sediments in the Kunlun Pass Basin, which show the basin sediments were formed between about 3.6 Ma and 0.5 Ma and the Kunlun-Yellow River Movement occurred at 1.2 to ～0.78 Ma. The lithology, sedimentary facies and lithofacies associations divide the basin into five stages of tectonosedimentary evolution, indicating the northern Tibetan Plateau having experienced five episodes of tectonic uplifts at ～3.6, 2.69－2.58, 1.77, 1.2, 0.87 and ～0.78 Ma since the Pliocene.

关键词：西藏高原昆仑山脉中生代后期盆地地质变化地壳运动

Seven amino acid peptide mimic from HVR1 of HCV influences cytokine profile of immune cells

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Journal of Medical Colleges of PLA(China) 2010年第5期25卷 257-266页

作者： song chunhui Chen Liming Yang Bin Chi Shuping Cheng Yun Department of Liver Disease Research Center for Biology No. 302 Hospital of PLA Beijing 100039 China

Objective:To investigate the actions of cytokine profile in the immune cells by a seven amino acid peptide mimic from HVR1 of HCV (GQTYTSG,named 7P).Methods:The peripheral blood mononuclear cells (PBMCs) from 17 healthy blood donors were stimulated with 7P,and the cytokine levels in CD4+CD8-,CD4-CD8+ T cells,NK,NKT cells were analyzed by the intracellular cytokine ***:The frequency of cells which secreted interferon-γ (IFN-γ) was found to be significantly increased in all cells,interleukin-10(IL-10) was significantly increased in CD4+CD8-,CD4-CD8+ T cells but decreased in NK,NKT cells,and tumor necrosis factor-α (TNF-α) was decreased in CD4+CD8-,CD4-CD8+ but increased in NK ***:7P could induce a cytokine profile in different immune cells in vitro and there was some difference between the CD4+CD8-,CD4-CD8+ T cells which represented the adaptive immunity cells and NK,NKT cells which represented the innate immunity *** kind of variation of cytokine profile might contribute to anti-virus and anti-inflammatory immune reaction.

关键词： Seven amino acids peptide mimic Interleukin-lO Interferon-γ Tumor necrosis factor-α Hepatitis C virus

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明代曳撒的形制考释

装饰 2021年第4期 132-133页

作者：宋春会江南大学设计学院

本文基于历史文献、图像资料以及考古实物的三重比对,探讨明代曳撒的形制演变,认为明代实际并存辫线袍、褶子衣及马面式曳撒三种形制,辫线袍及褶子衣是对元蒙服饰的继承,马面式曳撒则是对元蒙服饰的改造,关于曳撒形制不应只知马面式而... 详细信息

本文基于历史文献、图像资料以及考古实物的三重比对,探讨明代曳撒的形制演变,认为明代实际并存辫线袍、褶子衣及马面式曳撒三种形制,辫线袍及褶子衣是对元蒙服饰的继承,马面式曳撒则是对元蒙服饰的改造,关于曳撒形制不应只知马面式而忽略另外两种形制,廓清了曳撒形制发展的历史风貌,凸显出曳撒作为民族融合服饰的历史文化价值。

关键词：明代服饰曳撒辫线袍摺子衣