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Geochemical Constraints on the Origin and Evolution of Spring Waters in the Changdu-Lanping-Simao Basin, Southwestern China

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Acta Geologica Sinica(English Edition) 2019年第4期93卷 1097-1112页

作者： QIN Xiwei MA Haizhou ZHANG Xiying CHENG Huaide HAN Jibin LI Yongshou miao weiliang HAI Qingyu Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt lakesNorthwest Institute of Eco-Environment and ResourcesChinese Academy of Sciences810008 XiningChina Key Laboratory of Salt Lake Geology and Environment of Qinghai Province Qinghai Institute of Salt LakesNorthwest Institute of Eco-Environment and ResourcesChinese Academy of Sciences810008 XiningChina University of Chinese Academy of Sciences 100049 BeijingChina School of Environmental Studies China University of Geosciences430074 WuhanChina

Chemical and isotopic data were measured for 51 leached brine springs in the Changdu-Lanping-Simao Basin(CD-LP-SM),*** predominance of Cl and Na,saturation indices of carbonate minerals,and Na/Cl and Ca/SO4 ratios of^1 suggest that halite,sulphate,and carbonate are the solute *** of geochemical,δ18 O,andδD values suggests that springs are mainly derived from meteoric water,ice-snow melt,and water-rock interactions.B concentrations range from 0.18 to 11.9 mg/L,withδ11 B values of-4.37‰to+32.39‰,indicating a terrestrial ***δ11 B-B relationships suggest B sources of crustal origin(marine carbonates with minor crust-derived volcanics);we did not identify a marine or deep mantle ***δ11 B values of saline springs(+4.61‰to+32.39‰)exceed those of hot(-4.37‰to+4.53‰)and cold(-3.47‰to+14.84‰)springs;this has contributed to strong water-rock interactions and strong saturation of dissolved ***,the global geothermalδ11 B-Cl/B relationship suggests mixing of marine and non-marine ***δ11 B-Cl/B relationships of the CD-LP-SM are similar to those of the Tibet geothermal belt and the Nangqen Basin,indicating the same B *** differ from thermal waters controlled by magmatic fluids and seawater,suggesting that B in CD-LP-SM springs has a crustal origin.

关键词： Changdu-Lanping-Simao Basin δ18O δD δ11B Boron spring water origin

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Nd isotopic variations and its implications in the recent sediments from the northern South China Sea

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Chinese Science Bulletin 2009年第2期54卷 311-317页

作者： SHAO Lei QIAO PeiJun PANG Xiong WEI GangJian LI QianYu miao weiliang LI Ang State Key Laboratory of Marine Geology Tongji University Shanghai 200092 China CNOOC Ltd. Shenzhen Guangzhou 510240 China Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China

The chondrite-normalized REE distribution patterns in recent sediments from the northern South China Sea and surrounding areas are similar, with the HREE values being almost equal to or slightly higher, and the LaN/LuN ratio being lower, than PAAS standards. However, samples from the Xijiang River, a major branch of the Pearl River system, show opposite trends, i.e., with slightly lower HREE values and higher LaN/LuN ratio than PAAS. The distribution of Nd isotopes in sediments from the northern South China Sea was controlled by the Pearl River and the inshore area of South China, respectively. The volume of εNd(0) from inshore areas of southern China is apparently higher than that from the Pearl River, and εNd(0) values in offshore sediments and Taiwan Island are between these values. The results clearly show that εNd(0) volume in the northeastern South China Sea is higher than in the southwest part of the northern South China Sea, indicating different source rock types. The main source rock of the Pearl River sediment is carbonate types and affects sediment deposition in the southwest of the northern South China Sea, while the source rock in the inshore area of southern China, mainly Mesozoic and Cenozoic granites, contributes to sediments in the northeastern area of the northern South China Sea. Due to different source rock types, the HREE values and the volume of εNd(0) in recent sediments supplied by the inshore area of southern China are higher than those from the Pearl River. Over 80% of the rapidly accumulated sediments on the northern slope of the South China Sea in the southeast of Dongsha Islands area were derived from Taiwan Island and from inshore areas of South China, with only less than 20% from the Pearl River.

关键词：南海东部台湾海峡环流机制数值研究海洋科学

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Clay Mineralogical and Geochemical Studies of Detrital Rocks of the Upper Cretaceous Salt-bearing Strata,Simao Basin,SW China:Implication for Provenance and Source Weathering

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 235-237页

作者： miao weiliang MA Haizhou ZHANG Xiying LI Yongshou SHI Haiyan Key Laboratory of Salt Lake Resources and Chemistry Qinghai Institute of Salt Lakes Chinese Academy of Sciences Graduate School Chinese Academy of sciences

1 Introduction Geological studies established on several sections in Lanping-Simao basin have shown that the salt-bearing strata of Mengyejing formation(Yunlong *** Lanping basin)are constituted by an alternation of salt layers and interbedded *** latter consists mainly of mudstones,and mudstone-rich *** mineralogy and geochemistry of salt-bearing beds and

关键词： La Clay Mineralogical and Geochemical Studies of Detrital Rocks of the Upper Cretaceous Salt-bearing Strata,Simao Basin,SW China rock

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Stable Isotope and Element Geochemistry of Saline Springs in Evaporite-bearing Mengla Basin,South Yunnan,China

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 176-177页

作者： ZHANG Xiying MA Haizhou GAO donglin miao weiliang LI Yongshou Key Laboratory of Salt Lake Resources and Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences

1 Introduction Mengla Basin is a sub-basin in southern evaporitebearing Lanping-Simao *** are many salt springs in the *** 2012,11 spring samples were collected for analyses of chemistry and boron,hydrogen and oxygen

关键词： Mengla Basin stable isotope and element geochemistry water-rock reactions saline springs.

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Emerging structures and dynamic mechanisms ofγ-secretase for Alzheimer’s disease

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Neural Regeneration Research 2025年第1期20卷 174-180页

作者： Yinglong miao Michael S.Wolfe Computational Medicine Program and Department of Pharmacology University of North Carolina–Chapel HillChapel HillNCUSA Department of Medicinal Chemistry University of KansasLawrenceKSUSA

γ-Secretase,called“the proteasome of the membrane,”is a membrane-embedded protease complex that cleaves 150+peptide substrates with central roles in biology and medicine,including amyloid precursor protein and the Notch family of cell-surface *** inγ-secretase and amyloid precursor protein lead to early-onset familial Alzheimer’s disease.γ-Secretase has thus served as a critical drug target for treating familial Alzheimer’s disease and the more common late-onset Alzheimer’s disease as ***,critical gaps remain in understanding the mechanisms of processive proteolysis of substrates,the effects of familial Alzheimer’s disease mutations,and allosteric modulation of substrate cleavage byγ-*** this review,we focus on recent studies of structural dynamic mechanisms ofγ-*** mechanisms,including the“Fit-Stay-Trim,”“Sliding-Unwinding,”and“Tilting-Unwinding,”have been proposed for substrate proteolysis of amyloid precursor protein byγ-secretase based on all-atom molecular dynamics *** an incorrect registry of the Notch1 substrate was identified in the cryo-electron microscopy structure of Notch1-boundγ-secretase,molecular dynamics simulations on a resolved model of Notch1-boundγ-secretase that was reconstructed using the amyloid precursor protein-boundγ-secretase as a template successfully capturedγ-secretase activation for proper cleavages of both wildtype and mutant Notch,being consistent with biochemical experimental *** approach could be potentially applied to decipher the processing mechanisms of various substrates byγ-*** addition,controversy over the effects of familial Alzheimer’s disease mutations,particularly the issue of whether they stabilize or destabilizeγ-secretase-substrate complexes,is ***,an outlook is provided for future studies ofγ-secretase,including pathways of substrate binding and product release,effects of modulators on familial Alzheimer’s disease mutations

关键词： Alzheimer’s disease amyloid precursor protein cryo-EM structures drug design intramembrane proteolysis molecular dynamics Notch

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Decision making module based on stochastic magnetic tunnel junctions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 202-209页

作者： Yifan miao Li Zhao Yajun Zhang Zhe Yuan Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Institute for Nanoelectric Devices and Quantum Computing Fudan University Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan University

In biological neural systems, noise is ubiquitous but does not affect the correct decisions made in the complex cognitive ***-making in biological neural system is typically achieved by accumulating input information over a period of *** by recent developments in neurosciences, we design a decision-making module based on spintronic devices, utilizing superparamagnetic tunnel junctions as artificial neurons. The feasibility of this decision-making module is verified through circuit simulations. Taking a multi-layer perceptron as an example, the module significantly improves the accuracy of the perceptron in the handwritten digit recognition task. Furthermore, the spintronic decision-making module offers advantages over the conventional pooling methods, such as adaptive decision time, high performance and the absence of analog-to-digital conversion. The decision-making module is flexible to be integrated into artificial neural networks and provides a general yet effective solution to enhance performance against device noise.

关键词： neuromorphic computing spintronics magnetic tunnel junction neural networks

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老挝万象盆地钾盐矿床成盐晚期沉积环境:来自硼酸盐矿物的证据

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地球科学 2022年第1期47卷 149-158页

作者：唐启亮张西营苗卫良李永寿李雯霞赵雪中国科学院青海盐湖研究所中国科学院盐湖资源综合高效利用重点实验室青海西宁810008 青海省盐湖地质与环境重点实验室青海西宁810008 昆明理工大学国土资源工程学院云南昆明650093

老挝万象盆地蕴含着丰富的钾资源,是研究古蒸发岩和古海水形成演化的热点地区之一.老挝万象盆地含盐建造包含3个蒸发岩-碎屑岩沉积韵律,而钾镁盐矿赋存在下盐段顶部.通过对老挝通芒钾盐矿区钾镁盐矿层的硼酸盐矿物的提取,发现在成钾晚... 详细信息

老挝万象盆地蕴含着丰富的钾资源,是研究古蒸发岩和古海水形成演化的热点地区之一.老挝万象盆地含盐建造包含3个蒸发岩-碎屑岩沉积韵律,而钾镁盐矿赋存在下盐段顶部.通过对老挝通芒钾盐矿区钾镁盐矿层的硼酸盐矿物的提取,发现在成钾晚期硼酸盐矿物有方硼石单晶和鲕粒方硼石两种形式.钻孔中方硼石单晶含量较少,而鲕粒方硼石分布较多且基本赋存于钾镁盐矿层顶部,鲕粒方硼石的规律性分布表明成钾晚期为动荡的浅水环境.无论是方硼石单晶还是鲕粒方硼石都在高能环境下形成,其中鲕粒方硼石对于反演盐湖沉积环境有明显的指示意义.

关键词：老挝万象盆地通芒矿区钾盐矿床硼酸盐矿物鲕粒方硼石沉积环境

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Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： Peng Li Meifeng Cai Shengjun miao Yuan Li Yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

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柴达木盆地中部一里坪—西台吉乃尔地区深层卤水水化学特征及成因初探

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地质学报 2021年第7期95卷 2129-2137页

作者：卢鋆潘彤李永寿李洪普韩光苗卫良张西营中国科学院青海盐湖研究所中国科学院盐湖资源综合高效利用重点实验室青海省盐湖地质与环境重点实验室青海西宁810008 中国科学院大学北京100049 青海省地质矿产勘查开发局青海西宁810001 青海省柴达木综合地质矿产勘查院青藏高原盐湖及盐类矿产资源成矿规律及预测实验室青海格尔木816005

柴达木盆地深层卤水资源丰富,具有很好的开发利用前景。然而,前期研究主要侧重于柴达木盆地西部和北部地区,对盆地中部深层卤水赋存情况所知甚少,其形成机制尚不明确。本研究以柴达木盆地中部一里坪和西台吉乃尔盐湖周边的深层卤水为研... 详细信息

柴达木盆地深层卤水资源丰富,具有很好的开发利用前景。然而,前期研究主要侧重于柴达木盆地西部和北部地区,对盆地中部深层卤水赋存情况所知甚少,其形成机制尚不明确。本研究以柴达木盆地中部一里坪和西台吉乃尔盐湖周边的深层卤水为研究对象,利用该地区深钻获取的深层卤水样,开展水化学及B同位素组成研究,阐明柴中地区深层卤水水文地球化学特征并初步探讨其成因。分析结果显示,盆地中部深层卤水矿化度较高,为CaCl_(2)型水体。综合各种离子特征系数对研究区深层卤水进行系统分析,发现盆地中部深层卤水的形成与岩盐溶滤作用以及封闭地层条件下强烈的变质作用有关。同时初步推测B同位素来自于深层地热水。常、微量元素的不同来源反映了深层卤水物质来源的"二元结构"特征。本研究结果将为深入认识整个柴达木盆地深层卤水成因机理提供重要的科学依据。

关键词：深层卤水水化学硼同位素一里坪—西台吉乃尔盐湖柴达木盆地

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万象盆地不同成钾区的水不溶矿物对比及其指示意义

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地质学报 2021年第7期95卷 2214-2224页

作者：唐启亮张西营苗卫良李永寿李雯霞袁小龙中国科学院青海盐湖研究所中国科学院盐湖资源综合高效利用重点实验室青海西宁810008 中国科学院青海盐湖研究所青海省盐湖地质与环境重点实验室青海西宁810008

老挝万象盆地属于沙空那空盆地的次级盆地,沉积了厚层的钾石盐矿,而钾石盐中还存在着部分水不溶物,通过研究不同成钾区域的钻孔发现:水不溶物主要包括硬石膏、方硼石、白云母、石英、水氯硼钙石、碳酸盐矿物以及零散的黄铁矿,通过水不... 详细信息

老挝万象盆地属于沙空那空盆地的次级盆地,沉积了厚层的钾石盐矿,而钾石盐中还存在着部分水不溶物,通过研究不同成钾区域的钻孔发现:水不溶物主要包括硬石膏、方硼石、白云母、石英、水氯硼钙石、碳酸盐矿物以及零散的黄铁矿,通过水不溶矿物在钻孔中的分布及组合特征发现,钾盐从析出到结束,水不溶物出现规律性特征:钾石盐含量越多方硼石含量也越多,而硬石膏且越少,并在钾石盐高峰期出现鲕粒方硼石,鲕粒方硼石分布表明成钾晚期沉积环境为动荡的浅水环境。水不溶矿物组合、形貌特征及硼同位素分析研究显示,在万象盆地成钾阶段,钾盐沉积不是一成不变的而是具有明显的阶段性,其过程可以分为石盐沉积晚期,钾盐沉积早期,钾盐沉积中期和钾盐沉积晚期等4个不同阶段,其中钾盐阶段中期为钾盐沉积高峰期。因此,水不溶物研究能够很好地反演钾盐沉积环境,可作为古蒸发岩沉积研究的重要指标。

关键词：老挝万象盆地方硼石鲕粒方硼石浅水环境重要指标

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