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Carbon and Oxygen stable Isotope Values and Microfossils at 41.4-4.5ka BP in Tai Co,Tibet,china,and Their Paleoclimatic significance

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Acta Geologica sinica(English Edition) 2011年第5期85卷 1036-1050+1052-1056+1051页

作者： ZHENG Mianping~(1,2.*),LIU Junying~(1,3),MA Zhibang~(1,4),WANG Hailei~(1,2. and MA Nina~(1,2. 1 MLR key laboratory of {2. lake Resources and environment,Institute of Mineral Resources,CAGs, beijing 10003.,china 2.Research and Development Center for {2. lakes and Epithermal Deposits,chinese academy of geological {12.,beijing 10003.,china 3 Institute of Geology,chinese academy of geological {12.,beijing 10003.,china 4 key laboratory of Cenozoic Geology and environment,chinese academy of {12.,beijing 10002., china MLR key laboratory of {2. lake Resources and environment Institute of Mineral Resources CAGS Beijing 100037 China Research and Development Center for saline lakes and Epithermal Deposits Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China key laboratory of Cenozoic Geology and {2. Chinese Academy of Sciences Beijing 100029 China *Correspondence: Mianping ZHENG *Correspondence: Corresponding author. E-mail: zhengmp2010@***

Two sedimentary sections were measured at Tai Co(Co means lake in Tibetan) in western Tibet,*** two sections are almost all composed of clay carbonate beds except in their lower parts where there are carbonized plants at>10 cm depths and dark-colored carbonate clay and clay at 50-70 cm depths,yielding abundant gastropods,ostracods,and *** carbon and oxygen stable isotope values of carbonate,ostracods,and charophytes and ecological features of microfossil communities indicate the following climatic change in the area from 41.4 to 4.5 ka BP:at 41.4-2..2.ka BP,the climate was relatively wet;at 2..2.2..5 ka BP,it was slightly warm-dry;at 2..5-2..5 ka BP,it was warm-wet;at 2..5-2..0 ka BP,it was slightly cold-wet;at 2..5-17.5 ka BP,it became cold abruptly and slightly wet,implying the climate of the last glacial maximum;at 17.5-16.0 ka BP,it was slightly cold-dry;at 16.0-11.8 ka BP,it was slightly warm-wet;at 11.8-10.4 ka BP,it was relatively cold-dry, roughly equivalent to the climate of the Younger Dryas,and at 10.4 ka BP,the temperatures began to rise again;at 10.4-9.4 ka BP,it was slightly warm-wet;at 9.4-8.5 ka BP,there occurred short warm-wet oscillations;at 8.5-7.9 ka BP,it was slightly dry-cold,representing a strong temperature-lowering and drying event in the postglacial stage;at 7.8-6.3 ka BP,it was slightly warm-wet;at 6.3-4.5 ka BP,the climate tended to be cold-dry.4.5 ka BP recorded the maximum aridity since the late part of the late Pleistocene.

关键词： sedimentary environment index paleoclimatic changes late Pleistocene-Holocene(41.4-4.5 ka BP) Tai Co Tibet

Cesium accumulation by bacterium Thermus sp. TibetanG7:hints for biomineralization of cesium-bearing geyserite in hot springs in Tibet,china

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chinese science Bulletin 2007年第19期52卷 2680-2686页

作者： WANG HaiLei1,2.3, ZHENG MianPing1,2.3 & HUANG XiaoXing4 1 Institute of Mineral Resources, chinese academy of geological sciences (CAGs), beijing 10003.,{2. 2.R&D Center for saline lake and Epithermal Deposits, CAGs, beijing 10003.,{2. 3 open laboratory of saline lake Resourses and environment, CAGs, beijing 10003.,{2. 4 laboratory of Microbial Resources, Institute of Microbiology, chinese academy of sciences, beijing 100081,{2. Institute of Mineral Resources Chinese Academy of Geological Sciences (GAGS) Beijing 100037 China

The bacterium Thermus sp. TibetanG7, isolated from hot springs in Tibet, china, was examined for the ability to accumulate cesium from solutions. environmental conditions were simulated and the effects of pH, K+, Na+ and K+-regimes were then studied to determine the possible role of the bacterium in the formation of cesium-bearing geyserite around these hot springs. In despite of the inhibition of K+ and Na+, the bacterium Thermus sp. TibetanG7 revealed noticeable accumulation of cesium from solutions, with maximum accumulations of 53.49 and 40.41 μmol Cesium/g cell dry weight in Na+ and K+ inhibition experiments, respectively. The accumulation of cesium by this microorganism is rapid, with 40%―50% accumulated within the first 5 min. K+-deficient cells showed a much higher capacity of cesium accu- mulation compared with K+-sufficient cells. It is evident that the bacteria within the genus thermus play a significant role in the cesium assembly. The formation of cesium-bearing geyserite is also considered.

关键词：铯元素沉积物硅华生物矿化

Evidence of the Pan-lake stage in the Period of 40-2. ka B.P. on the Qinghai-Tibet Plateau

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Acta Geologica sinica(English Edition) 2000年第2期74卷 266-272页

作者： ZHENG Mianping, MENG Yifeng and Wei LejunResearch & Development Center of saline lake and Epithermal Deposits,{2. academy of geological sciences, beijing 10003. Research & Development Center of saline lake and Epithermal Deposits Chinese Academy of Geological Sciences Beijing 100037 [?]2.heng Mianping Born in Fujian in 1934 graduated from the Department of Geology Nanjing University in 1956. He was studied the geology of saline deposits for more than 40 years and made systematic and pioneering studies on saline lakes of the Qinghai-Tibet plateau. Now he is chief of the Research & Development Center of Saline Lakes and Epithermal Deposits Chinese Academy of Geological Sciences and an academician of the Chinese Academy of Engineering as well as a member of the Executive Committee of the International Society of Saline Lakes. E-mail: zmp@***

The Qinghai-Tibet plateau is one of major saline lake regions in{2., where saline lakes are widespread and constitute an important object of researches on the palaeoclimatic change in the region. On the basis of comprehensive investigations of the evolution of the lake's surface and sediments on the plateau, the authors have further demonstrated the existence of a pan-lake stage (river and lake flooding stage) on the Qinghai-Tibet plateau during the period of about 40+-2. ka B.P. and analyzed the palaeoclimatic characteristics of the pan-lake period and relationships between the ancient monsoons and the uplift of the plateau since the beginning of the Quaternary.

关键词： Qinghai-Tibet plateau Late Pleistocene pan-lake event palaeoclimate

Preliminary discussion of low-salinity hydrothermal fluid mineralization

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chinese science Bulletin 1999年第S2期44卷 141-143页

作者： ZHENG Mianping R & D Center of saline lake and Epithermal Deposits,{2., beijing 10003., china R and D Center of saline lake and Epithermal Deposits Chinese Academy of Geological Sciences Beijing 100037 China

REVIEWING the history of the geology of mineral deposits, we may find that in the first fifty years of thetwentieth century the magmatic-hydrothermal theory of ore deposition was the most prevalent, whichgave impetus to the development of the geology of mineral deposits. In the 1960s, the drilling of thesalton sea geothermal field, California, the United states, and discovery and study of the Red sea seafloor hot brines and large amounts of metal sulfides removed therefrom led to the rise of the brine theory ofmineral deposition, thus elucidating the origin of massive metal sulfides and promoted the discoveryand exploration of metal deposits. After the 1970s and the 1980s, through a study of the hydrothermal ore fluids of modern hotsprings. geologists came to realize that there exist low-salinity hydrothermal ore fluids other than

关键词： low-salinity hydrothermal fluid mineralization.

Palaeoclihlatic Indicators of china's Quaternary saline {2. sediments and Hydrochemistry

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Acta Geologica sinica(English Edition) 2000年第2期74卷 259-265页

作者： ZHENG Mianping, ZHAO Yuanyi and LIU JunyingResearch & Development Center of saline lake and Epithermal Deposits,{2. academy of geological sciences, beijing 10003.

In this paper the authors classify saline lake sediments into the cold, warm and eurythermal phases, reveal the consistency between the zoning of hydrochemical types of modern saline lake water and climatic zoning and give climatic parameters under the conditions of typical cold phase (mirabilite and natron), warm phase (thenar-dite) and slightly warm phase (bloedite) saline lake deposition.

关键词： saline lake sediments hydrochemistry palaeoclimatic indicator Quaternary

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西藏台错晚第四纪轮藻类的新类型

微体古生物学报 2011年第2期28卷 145-168页

作者：刘俊英王海雷国土资源部盐湖资源与环境重点实验室北京100037 中国地质科学院盐湖与热水资源研究中心北京100037 中国地质科学院地质研究所北京100037 中国地质科学院矿产资源研究所北京100037

本文的研究材料来自西藏羌塘高原西部台错古湖一个3.69 m的天然剖面,其地层测年为32.6—4.5ka。从其156个样品中获取大量的轮藻类、介形类和腹足类及少量有孔虫等微体化石。据轮藻类藏卵器外形,顶部结构、螺旋细胞钙化式样等特征,该剖... 详细信息

本文的研究材料来自西藏羌塘高原西部台错古湖一个3.69 m的天然剖面,其地层测年为32.6—4.5ka。从其156个样品中获取大量的轮藻类、介形类和腹足类及少量有孔虫等微体化石。据轮藻类藏卵器外形,顶部结构、螺旋细胞钙化式样等特征,该剖面的轮藻类应归属于轮藻科Characeae之轮藻属Chara。经研究得知,台错古湖在大约2. ka的时期内,曾生长过2.种轮藻,其中新类型7个,包括新种4个:Chara platea,***,***和***;新型2.:***,***;新变种1个:***。其余是曾产于国内外第四系的Chara其它分子。其中有5个新联合种:Chara alba(Madler et staesche),***(Tang et Di),***(Tang et Di),***(Tang etDi)和***。该剖面轮藻类、介形类、腹足类等多门类微体化石的紧密共生,对轮藻植物群生态学研究具重要意义。

关键词：轮藻类新类型晚第四纪台错西藏

Thrust Propagation in the Aqqikkol lake Area, the East Kunlun Mountains, Northwestern china

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Acta Geologica sinica(English Edition) 2003年第4期77卷 468-478页

作者： CUI Junwen, CHEN Wen, LI Pengwu, ZHANG Xiaowei and LI Li Institute of Geology, chinese academy of geological sciences, beijing 10003. Institute of Geology Chinese Academy of Geological Sciences Beijing 100037

The western segment of the East Kunlun Mountains is one of the poorly studied regions in northwestern china. Through a structural analysis of the typical sections, we have the following views: (1) There is a very well developed fault system in the western segment of the East Kunlun Mountains and thrust propagation, normal slip and decoupling are the chief deformation events in this area. (2. Although the thrusting started in the Late Carboniferous and Late Triassic-Early Jurassic, strong activity took place in the Miocene-Quaternary when the Kumkol basin was strongly downwarped. (3) The tectonic pattern of coexistence of N-directed thrust propagation and s-directed normal slip in this area is consistent with the general tectonic pattern of the northern Qinghai-Tibet plateau and also very similar to that of the Himalayan region on the southern margin of the Qinghai-Tibet plateau, but their directions between the thrust propagation are opposite and all the strong thrust propagations occurred from the Miocene-Pliocene to Quaternary, a period featuring strong collision between the Indian plate and the Eurasian plate and abrupt uplift of the Qinghai-Tibet plateau. This oppositely directed thrust propagation and normal slip reveal such kinematic characteristics as symmetric propagations of deep-seated materials towards the north and south beneath the Qinghai-Tibet plateau and gravitational sliding of superficial materials towards the interior of the plateau. Therefore, the establishment of the fault system in the study area may provide an approach to the study of deep processes of the northern Qinghai-Tibet plateau and the construction of a unified geodynamic model for the uplift of the Qinghai-Tibet plateau.

关键词： western segment of the East Kunlun Mountains thrust propagation normal slip plate collision dynamic model

A spectral Index for Estimating soil salinity in the Yellow River Delta Region of china Using EO-1 Hyperion Data

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Pedosphere 2010年第3期20卷 378-388页

作者： WENG Yong-Ling GONG Peng ZHU Zhi-Liang Department of surveying and Mapping Engineering College of Transportation Southeast University Nanjing 210096(China) state key laboratory of Remote sensing science Institute of Remote Sensing Applications of the Chinese Academy ofSciences and Beijing Normal University Beijing 100101 (China) Department of environment science Policy and Management University of California Berkeley CA 94720 (USA) EROs Data Center U.S. Geological Survey Sioux Falls SD 57198 (USA)

soil salinization is one of the most common land degradation processes. In this study, spectral measurements of saline soil samples collected from the Yellow River Delta region of china were conducted in {2. and hyperspectral data were acquired from an EO-1 Hyperion sensor to quantitatively map soil salinity in the region. A soil salinity spectral index (ssI) was constructed from continuum-removed reflectance (CR-reflectance) at 2.52.and 2.03 nm, to analyze the spectral absorption features of the salt-affected soils. There existed a strong correlation (r = 0.91) between the ssI and soil salt content (ssC). Then, a model for estimation of ssC with ssI was established using univariate regression and validation of the model yielded a root mean square error (RMsE) of 0.986 and an R2.of 0.873. The model was applied to a Hyperion reflectance image on a pixel-by-pixel basis and the resulting quantitative salinity map was validated successfully with RMsE = 1.92. and R2.= 0.62.. These suggested that the satellite hyperspectral data had the potential for predicting ssC in a large area.

关键词： hyperspectral reflectance soil salt content spectral absorption features

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西藏扎布耶盐湖太阳池的建造与运行试验

太阳能学报 2010年第2期31卷 163-167页

作者：黄维农王学魁孙之南乜贞沙作良天津科技大学海洋科学与工程学院天津300457 西藏扎布耶锂业高科技有限公司拉萨850000 中国地质科学院矿产资源研究所北京100037 国土资源部盐湖与环境开放研究实验室北京100037

介绍了西藏扎布耶盐湖面积为3588m^2.阳池的建造与运行试验,获得了扎布耶盐湖太阳池运行过程中的温度和盐度分布情况,找到了不同时期简单实用的梯度层构建方法。基于当地条件,扎布耶盐湖太阳池的构建费用低,使用淡水量小,梯度层薄(30～... 详细信息

介绍了西藏扎布耶盐湖面积为3588m^2.阳池的建造与运行试验,获得了扎布耶盐湖太阳池运行过程中的温度和盐度分布情况,找到了不同时期简单实用的梯度层构建方法。基于当地条件,扎布耶盐湖太阳池的构建费用低,使用淡水量小,梯度层薄(30～50cm);下对流层(LCZ)较厚,直接使用盐田日晒卤水,一般达2.0～2.0cm;运行周期短(约1个半月～2.月);升温幅度低(约30～40℃);不需要复杂的辅助和维护设施。其成功运行为扎布耶盐湖锂资源的开发提供了热源。

关键词：扎布耶盐湖太阳池运行试验