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The structure of Circum-Tibetan Plateau Basin-Range System and the large gas provinces

Science China Earth Sciences 2013年第11期56卷 1853-1863页

作者： JIA ChengZao LI BenLiang lei yongliang CHEN ZhuXin Research Institute of Petroleum Exploration and Development PetroChina

Northward subduction of the Cenozoic Tethys ocean caused the convergence and collision of Eurasia-Indian Plates, resulting in the lower crust thickening, the upper crust thrusting, and the Qinghai-Tibet uplifting, and forming the plateau landscape. In company with uplifting and northward extruding of the Tibetan plateau, the contractional tectonic deformations persistently spread outward, building a gigantic basin-range system around the Tibetan plateau. This system is herein termed as the Cir- cure-Tibetan Plateau Basin-Range System, in which the global largest diffuse and the most energetic intra-continental defor- mations were involved, and populations of inheritance foreland basins or thrust belts were developed along the margins of an- cient cratonic plates due to the effects of the cratonic amalgamation, crust differentiation, orogen rejuvenation, and basin sub- sidence. There are three primary tectonic units in the Circum-Tibet Plateau Basin-Range System, which are the reactivated an- cient orogens, the foreland thrust belts, and the miniature cratonic basins. The Circum-Tibetan Plateau Basin-Range System is a gigantic deformation system and particular Himalayan tectonic domain in central-western China and is comparable to the Tibetan Plateau. In this system, northward and eastward developments of thrust deformations exhibit an arc-shaped area along the Kunlun-Altyn-Qilian-Longmenshan mountain belts, and further expand outward to the Altai-Yinshan-Luliangshan- Huayingshan mountain belts during the Late Cenozoic sustained collision of Indo-Asia. Intense intra-continental deformations lead ancient orogens to rejuvenate, young foreland basins to form in-between orogens and cratons, and thrusts to propagate from orogens to cratons in successive order. Driven by the Eurasia-Indian collision and its far field effects, both deformation and basin-range couplings in the arc-shaped area decrease from south to north. When a single basin-range unit is focused on, deforma

关键词： Circum-Tibet Plateau Basin-Range System Himalayan movement intra-continental deformation tectonic domain natural gas resources

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东昆仑造山带海德乌拉铀矿床成矿流体特征研究

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地质学报 2024年第2期98卷 467-480页

作者：朱坤贺王凯兴刘晓东段建华李彦强吴佳余驰达雷勇亮核资源与环境国家重点实验室东华理工大学江西南昌330013 东华理工大学地球科学学院江西南昌330013 青海省核工业地质局青海西宁810001

东昆仑造山带海德乌拉铀矿床是近些年西北地区最新探明的与火山岩有关的独立铀矿床,该矿床的发现为东昆仑造山带探寻热液型铀矿床提供了指示意义。本文选择与海德乌拉铀矿成矿期相关的透明矿物(粉红色方解石、紫黑色萤石及石英)作为研... 详细信息

东昆仑造山带海德乌拉铀矿床是近些年西北地区最新探明的与火山岩有关的独立铀矿床,该矿床的发现为东昆仑造山带探寻热液型铀矿床提供了指示意义。本文选择与海德乌拉铀矿成矿期相关的透明矿物(粉红色方解石、紫黑色萤石及石英)作为研究对象,系统地开展C-H-O同位素和流体包裹体研究,查明该矿床成矿流体的来源与性质,并探讨矿床成因。研究结果表明,海德乌拉铀矿床成矿期石英中主要为H2O气液两相包裹体,少见CO_(2)-H2O两相包裹体;在粉红色方解石脉、紫黑色萤石脉中流体包裹体均含H_(2)O气液两相包裹体,在粉红色方解石脉中偶见纯液相包裹体,均未见到纯气相及含固相包裹体。成矿期粉红色方解石、紫黑色萤石及石英中包裹体均一温度范围分别为133~187℃(均值163℃)、127~204℃(均值169℃)、183~287℃(均值219℃),盐度范围分别为1.40%~7.02%NaCleq(均值3.65%NaCleq)、0.53%~3.06%NaCleq(均值1.26%NaCleq)、7.17%~17.26%NaCleq(均值为11.46%NaCleq)。流体包裹体气相成分以H_(2)O为主,另含少量CO_(2)等。C-H-O同位素实验数据表明,流体中δ^(13)CFluid-V-PDB、δDFluid-V-SMOW、δ^(18)OFluid-V-SMOW值的变化范围分别为1.59‰~1.00‰、71‰~63‰、0.03‰~3.72‰,表明成矿流体并非单一来源,可能为大气降水与岩浆水混合来源。此外,沥青铀矿的沉淀主要是由于流体与围岩的相互反应所引起的物理化学条件变化加上流体沸腾/CO_(2)去气,最终导致了沥青铀矿等成矿物质发生大规模的卸载与沉淀。

关键词：火山岩型铀矿床成矿流体流体包裹体激光拉曼光谱 C-H-O同位素

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东昆仑造山带海德乌拉辉绿岩成因及其地质意义

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地球科学 2024年第4期49卷 1261-1276页

作者：孙立强王凯兴戴佳文刘晓东刘文恒余驰达雷勇亮陈耀新林俊杰东华理工大学地球科学学院江西南昌330013 东华理工大学核资源与环境国家重点实验室江西南昌330013 青海省核工业地质局青海西宁810001

古特提斯洋在东昆仑造山带的闭合时间仍存在争议.对东昆仑东段海德乌拉地区产出的辉绿岩开展了系统的研究工作.LA-ICP-MS锆石U-Pb同位素定年的结果显示,海德乌拉辉绿岩形成于238±2 Ma.在地球化学组成上,该辉绿岩具有较高的TiO_(2)(1.75... 详细信息

古特提斯洋在东昆仑造山带的闭合时间仍存在争议.对东昆仑东段海德乌拉地区产出的辉绿岩开展了系统的研究工作.LA-ICP-MS锆石U-Pb同位素定年的结果显示,海德乌拉辉绿岩形成于238±2 Ma.在地球化学组成上,该辉绿岩具有较高的TiO_(2)(1.75%~2.46%)、Fe_(2)O_(3)^(T)(8.88%~12.30%)含量和较低的Mg O含量(2.76%~6.34%);富集不相容元素,相对亏损Nb、Ta、Sr、Ti;Sr-Nd同位素组成较为富集且均一,(^(87)Sr/^(86)Sr)_(i)为0.711 61~0.712 95,ε_(Nd)(t)为-3.2~-2.8.上述特征表明海德乌拉辉绿岩形成于板片俯冲环境,其源区为由俯冲板片释放的流体交代所形成的富集地幔.结合前人的研究成果,认为古特提斯阿尼玛卿洋的北向俯冲至少持续到中三叠世末期;随后,洋盆在晚三叠世早期闭合;在不晚于228 Ma时,东昆仑东段地区进入后碰撞伸展的环境.

关键词：东昆仑造山带构造演化三叠纪辉绿岩岩石成因岩石学

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Meso-Cenozoic Tectonic Events Recorded by Apatite Fission Track in the Northern Longmen-Micang Mountains Region

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Acta Geologica Sinica(English Edition) 2012年第1期86卷 153-165页

作者： lei yongliang JIA Chengzao LI Benliang WEI Guoqi CHEN Zhuxin SHI Xin State Key Laboratory of Enhanced Oil Recovery Beijing 100083China Research Institute of Petroleum Exploration and Development(RIPED) PetroChinaBeijing 100083China PetroChina Company Limited Beijing 100010China Research Institute of Petroleum Exploration and Development-Langfang Langfang 065007China

There is a cross-cutting relationship between the E-W trending structures and the NE- trending structures in the northern Longmen-Micang Mountains region, which reflects possible regional tectonic transition and migration. Apatite fission track （AFT） analyses of 15 samples collected from this area yield apparent ages varying from 30.3±4.2 Ma to 111.7±9.0 Ma and confined-track-lengths ranging from 10.6±0.3 pm to 12.4±0.1 μm. Four specific groups were identified on the basis of the Track Age Spectrum Calculation （TASC） patterns, i.e., 143-112 Ma, 93.6-88 Ma, 42-40 Ma and -25.6 Ma. These age groups correspond to the spatial distributions of datasets and may represent four tectonic events. Together with the regional deformation patterns, the four age groups are interpreted to indicate tectonic superposition, transition and migration during the Meso-Cenozoic with the following possible order：（1） the Micang Mountains belt was dominated by the E-W trending structure during 143-112 Ma; （2） the contraction of the Longmen Mountains belt from the NW to the SE during 93.6-88 Ma led to the superposition of the NE-trending structures over the E-W trendinding structures; （3） dextral strike-slip shear dominated the Longmen Mountains belt at 42-40 Ma; （4） westward migration of the active tectonic belt occurred from 93.6-25.6 Ma in a break-back sequence in the northern Longmen Mountains belt. The Late Cenozoic tectonics in the northern Longmen Mountains belt are characterized by the dextral strike-slip shear and the occurrence of westward break-back sequence of deformations. As a result, north-south differences in deformations along the Longmen Mountains belt were intensified since the Miocene time and strains were mainly accumulated in the hinterland of the Longmen Mountains instead of being propagated to the foreland basin.

关键词： apatite fission track tectonic events Longmen Mountains Micang Mountains Meso-Cenozoic

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Over-expression of nitric oxide and nitric oxide synthase in the rat brain following focal ischemia

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Neural Regeneration Research 2008年第2期3卷 162-166页

作者： Weizhong Yang Chunmei Chen Chunhua Wang Songsheng Shi Junrong lei yongliang Zhang Department of Neurosurgery Union Hospital Fujian Medical University Fujian Institute of Neurosurgery Fuzhou 350001 Fujian Province China

BACKGROUND： In cerebral ischemia, over-expression of nitric oxide （NO） exerts neurotoxic effects.OBJECTIVE： This study was designed to measure NO and nitric oxide synthase （NOS） expression in rat brain tissue during cerebral ischemia, and to correlate expression levels of NO and NOS with ischemic time. DESIGN： A complete randomized grouping design, controlled animal experiment. SETTING： Fujian Institute of Neurosurgery ＆ Department of Neurosurgery, Union Hospital Affiliated Fujian Medical University. MATERIALS： This study was performed at the Fujian Institute of Neurosurgery in December 2003. Eighty healthy adult male Sprague Dawley （SD） rats of clean grade were provided by the Zhejiang Laboratory Animal Center. The protocol was performed in accordance with ethical guidelines for the use and care of animals. Kits for measuring NO expression by method of nitrate reductase （Boster Company, Wuhan, China） and NOS activity （Jiancheng Bioengineering Co., Ltd., Nanjing, China）, as well as a kit for reverse transcription-PCR （RT-PCR, Promega, USA） were used in the present study. METHODS： Sixty-eight rats underwent cerebral ischemia by occluding the middle cerebral artery by suture method. Forty-eight successfully lesioned rats were included in the study. Six rats were used for each length of ischemic event （30 minutes, 1, 3, 6, 12, 24, and 72 hours, and 5 days of ischemia）. Additionally, a normal control group （n = 6, normally raised） and a sham-operated group （n = 6, corresponding cerebral vessels exposed, without occlusion of middle cerebral artery） were included in the analysis. MAIN OUTCOME MEASURES： Neurological function deficits were scored according to methods of Longa, Bederson, and colleagues. NO levels and NOS activity in the brain tissue were measured via nitrate reductase and chemical colorimetry, respectively. The expression of nitrotyrosine （NT）, an in vivo specific metabolite of NO, was quantitatively measured by flow cytometry. Expression of endoth

关键词： cerebral ischemia NO eNOS, nNOS iNOS

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New process for treating boron-bearing iron ore by flash reduction coupled with magnetic separation

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 473-484页

作者： Qipeng Bao lei Guo Hong Yong Sohn Haibin Zuo Feng Liu yongliang Gao Zhancheng Guo State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Department of Materials Science&Engineering University of UtahUtah 84112USA China ENFI Engineering Corporation Beijing 100038China

Boron is an important industrial raw material often sourced from minerals containing different compounds that cocrystallize,which makes it difficult to separate the mineral phases through conventional *** study proposed a new treatment called flash reduction-melting separation(FRMS)for boron-bearing iron *** this method,the concentrates were first flash-reduced at the temperature under which the particles melt,and the slag and the reduced iron phases disengaged at the particle *** reduc-tion and melting effects were achieved above 1550℃.The B_(2)O_(3) content in the separated slag was over 18wt%,and the B content in the iron was less than 0.03wt%.The proposed FRMS method was tested to investigate the effects of factors such as ore particle size and tem-perature on the reduction and melting steps with and without pre-reducing the raw *** mineral phase transformation and morphology evolution in the ore particles during FRMS were also comprehensively analyzed.

关键词： ludwigite boron-bearing iron concentrate flash reduction melting separation boron

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中国中西部前陆冲断带运动学分类、模型与勘探领域

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石油勘探与开发 2013年第1期40卷 66-78页

作者：管树巍何登发雷永良陈竹新盆地构造与油气成藏重点实验室中国石油勘探开发研究院中国地质大学(北京)海相储集层演化与油气富集机理教育部重点实验室

根据冲断系统内断层位移传递和消减的方式,将中国中西部前陆冲断带划分为4类:①Ⅰ型前陆冲断带,断层位移沿滑脱面全部传递至盆地内部,根据冲断构造规模和结构,又可分为库车型、川西南型和酒泉型3个亚类;②Ⅱ型前陆冲断带,以准噶尔盆地... 详细信息

根据冲断系统内断层位移传递和消减的方式,将中国中西部前陆冲断带划分为4类:①Ⅰ型前陆冲断带,断层位移沿滑脱面全部传递至盆地内部,根据冲断构造规模和结构,又可分为库车型、川西南型和酒泉型3个亚类;②Ⅱ型前陆冲断带,以准噶尔盆地南缘为代表,冲断带内既存在向盆地方向传递的位移,也存在向造山带方向消减的位移;③Ⅲ型前陆冲断带,以塔西南甫沙冲断带为代表,断层位移全部沿着深部构造楔顶部的反冲断面向造山带方向消减;④复杂边界制约下的前陆冲断带,主要发育在柴西南和柴北缘,冲断系统内断层位移的传递受柴达木盆地形态和周缘边界限制,以至没有形成稳定的前陆区和前陆盆地特有的楔形沉积结构。通过中西部前陆冲断带运动学分类和复杂构造建模,提出并论证了准噶尔盆地南缘深层叠加构造楔形体、川西北寒武系倒转推覆体下的晚古生代被动陆缘层序、库车中段—东段的煤下构造以及准噶尔盆地西北缘下盘掩伏构造4个勘探新领域。

关键词：前陆冲断带复杂构造解析运动学分类构造模型恢复应变中国中西部

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走滑断裂带贯穿过程与发育模式的物理模拟

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石油勘探与开发 2017年第3期44卷 340-348页

作者：肖阳邬光辉雷永良陈婷婷中山大学广东省海洋资源与近岸工程重点实验室广州510006 中国石油勘探开发研究院北京100083

结合实际地质资料设计9组砂箱模拟实验,并利用断层CT扫描技术研究简单剪切走滑带演化规律与发育机制。结果表明,R(Riedel)剪切断裂形成早、数量多,并有一组与主走滑带低角度相交,P剪切断裂(与R剪切断裂对称分布的压剪破裂)与Y剪切断裂(... 详细信息

结合实际地质资料设计9组砂箱模拟实验,并利用断层CT扫描技术研究简单剪切走滑带演化规律与发育机制。结果表明,R(Riedel)剪切断裂形成早、数量多,并有一组与主走滑带低角度相交,P剪切断裂(与R剪切断裂对称分布的压剪破裂)与Y剪切断裂(与主位移带近平行的剪切破裂)形成滞后,并在Y剪切断裂发育后才从分段构造连接成贯穿的走滑带。走滑带贯穿连通过程可划分为4个阶段:萌芽阶段、R剪切断裂发育阶段、P剪切与Y剪切断裂发育阶段、走滑带贯穿阶段。实验揭示了走滑断裂由基底向盖层递进传播的发育过程,萌芽阶段剖面上断裂逐渐向上散开发育,R剪切断裂发育阶段平面上向外散开后逐渐向主位移带收敛。雁列构造具有"螺旋-拖曳"发育模式,雁列断裂的长度增长速度呈约2倍于深度增长速度线性增长,而与主位移带夹角随深度呈二次函数变小。分析表明,最大主应力方向、盖层厚度是导致雁列构造"螺旋-拖曳"结构差异的主控因素。走滑断裂的物理模拟为塔里木盆地海相碳酸盐岩断裂解析与分层、分段的勘探开发实践提供了模型基础。

关键词：走滑断裂带构造物理模拟构造演化雁列构造 “螺旋-拖拽”模式塔里木盆地

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Metarelation2vec:A Metapath-Free Scalable Representation Learning Model for Heterogeneous Networks

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Tsinghua Science and Technology 2024年第2期29卷 553-575页

作者： lei Chen Yuan Li Yong lei Xingye Deng School of Information and Electrical Engineering Hunan University of Science and TechnologyXiangtan 411201China School of Computer Science and Engineering Hunan University of Science and TechnologyXiangtan 411201China

Metapaths with specific complex semantics are critical to learning diverse semantic and structural information of heterogeneous networks(HNs)for most of the existing representation learning ***,any metapaths consisting of multiple,simple metarelations must be driven by domain *** sensitive,expensive,and limited metapaths severely reduce the flexibility and scalability of the existing models.A metapath-free,scalable representation learning model,called Metarelation2vec,is proposed for HNs with biased joint learning of all metarelations in a bid to address this ***,a metarelation-aware,biased walk strategy is first designed to obtain better training samples by using autogenerating cooperation probabilities for all metarelations rather than using expert-given ***,grouped nodes by the type,a common and shallow skip-gram model is used to separately learn structural proximity for each node ***,grouped links by the type,a novel and shallow model is used to separately learn the semantic proximity for each link ***,supervised by the cooperation probabilities of all meta-words,the biased training samples are thrown into the shallow models to jointly learn the structural and semantic information in the HNs,ensuring the accuracy and scalability of the *** experimental results on three tasks and four open datasets demonstrate the advantages of our proposed model.

关键词： metarelation random walk heterogeneous network metapath representation learning

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多滑脱构造分析及深层背斜判识

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石油勘探与开发 2018年第2期45卷 265-274页

作者：陈竹新雷永良胡英王丽宁杨庚中国石油勘探开发研究院北京100083

基于滑脱褶皱正演模型的分析,提出在时间域地震剖面中开展多滑脱构造分析和深层背斜真实性判识的方法,主要包括利用均匀速度场对时间偏移地震剖面进行时深转换、对获得的伪深度域剖面进行构造解释和测量、利用测量的构造起伏面积和深度... 详细信息

基于滑脱褶皱正演模型的分析,提出在时间域地震剖面中开展多滑脱构造分析和深层背斜真实性判识的方法,主要包括利用均匀速度场对时间偏移地震剖面进行时深转换、对获得的伪深度域剖面进行构造解释和测量、利用测量的构造起伏面积和深度开展分段相关关系分析。基于构造起伏面积-深度相关关系可开展构造层划分、滑脱面和构造缩短量厘定以及深层构造真假判识。构造起伏面积-深度的分段性是多滑脱构造的典型特征,而面积-深度的线性不相关可指示地层未褶皱变形或存在假背斜构造。在不考虑面积-深度不确定性的情况下,分段的斜率可指示各滑脱构造层的差异缩短量;相邻分段的交点指示了滑脱面与参考面的间距,进而厘定原始时间域剖面中的滑脱面位置。该方法的提出有助于深入挖掘和利用时间域地震资料、明确复杂构造区的地质结构和评估深层勘探目标风险等,在准噶尔盆地南缘和川东褶皱带应用后效果较好。

关键词：多滑脱构造背斜时间域地震剖面面积-深度法复杂构造区准噶尔盆地南缘川东褶皱带中图

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