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Search Results: 1 - 10 of 173211 matches for " 陈有炘 "
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遥感技术在东天山大黑山地区地质填图中的应用
闫颖,,孟勇,李佐臣
西北地质 , 2015,
Abstract: 利用不同地质体在同一波段或相同地质体在不同波段具有不同色调的变化规律, 对东天山大黑山地区的ETM+图像和Spot图像进行了详细的地质解译, 建立了研究区地层、侵入体和构造的解译标志。解译结果表明, 在遥感影像图上可以准确的勾绘不同地质体的界线、确定不同构造的位置。通过野外地质调查, 划分出不同的地层单位、侵入体和构造现象。遥感地质解译和野外验证结果对比表明, 遥感技术在地质填图工作中可以发挥重要作用。
中国阿尔泰东北部地区哈拉尔次花岗岩的年龄、成因及构造意义
Ages, Origin and Tectonic Significance of Halaerci Granites from Northeastern Part of Chinese Altay Mountains

田红彪,,杨永强,李伦
Tian Hongbiao
, Chen Youxin, Yang Yongqiang, Li Lun

地球科学(中国地质大学学报) , 2017, DOI: 10.3799/dqkx.2017.553
Abstract: 在岩石地球化学研究基础上,揭示哈拉尔次花岗岩的成因、侵位时代及构造背景,进行锆石U-Pb及Nd同位素测试,并与阿尔泰造山带内其他花岗岩进行对比,有助于为阿尔泰造山带构造演化提供依据.出露于中阿尔泰构造带的哈拉尔次花岗岩主要岩石类型有花岗闪长岩、二长花岗岩、正长花岗岩,LA-ICP-MS锆石U-Pb年代学研究结果表明,其形成时代为454.8±2.4Ma(MSWD=0.32),为晚奥陶世岩浆活动产物.地球化学研究表明,岩石具有高硅、富碱、高钾(K2O/Na2O>1)、低钛、低镁及低磷等地球化学特征,铝饱和指数(A/CNK)平均为1.05,CIPW计算中刚玉分子含量大于1,显示出高钾钙碱性过铝质花岗岩的特征;岩石轻稀土相对富集、重稀土平坦,有显著的Eu负异常,富集Th、Rb,亏损Sr、Ti、P等元素,有明显的Nb、Ta、Ti负异常,显示出火山弧花岗岩的特征;其接近于0的εNd(t)(-2.0~+0.5)和较老的两阶段模式(TDM2)年龄(1.15~1.35Ga)暗示其源区含有较多的壳源组分并有一定量幔源物质加入.综合分析研究表明,哈拉尔次花岗岩可能由富含白云母和黑云母的含泥质杂砂岩在较低压力和较高温度下经历部分熔融形成,其源区有斜长石、钛铁矿和磷灰石的残留,同时幔源物质有一定的混入,形成于活动大陆边缘挤压背景下,局部伸展减压以及异常地幔不均匀上升提供热量,导致中上地壳沉积物发生部分熔融并有少量的幔源物质混入,形成哈拉尔次花岗岩.
In order to study the chronological, geochemical characteristics and tectonic setting of the Halaerci granite from Altay area, the LA-MC-ICPMS zircons U-Pb dating method was employed to assess the ages and Nd isotope composition, preceded by their petrologcial and geochemical studies. In addition, the authors aim to provide more evidences for the structural evolution of Altay tectonic belt by making a comparison with other granites from central Altay orogenic belt. The exposed Halaerci granites of central Altay tectonic belt are dominated by granodiorite, monzonite and syenogranite. LA-ICP-MS zircon U-Pb chronology study suggests that formation age is from 454.8±2.4Ma (MSWD=0.32), which belongs to the Late Ordovician magma activity. The study of geochemistry indicates that rock is characterized by high silicon, enriched alkali and high potassium (K2O/Na2O>1) and low titanium, low magnesium and low phosphorus. Average (A/CNK) is 1.5 and corundum molecular content of CIPW calculation is greater than 1, which shows a high potassium calc-alkaline peraluminous granite characteristics. The granites are relatively enriched in light rare earth elements, while flat in heavy rare earth elements, with significant Eu negative anomaly, enrichment of Th and Rb, depletion of Sr, Ti and P elements, pronounced Nb, Ta and Ti negative anomalies, which shows the initial arc characteristic of magmatic rocks. Its εNd(t) is close to 0 (-2.0 to +0.5) and old two-phase model (TDM2) age (1.15 to 1.35) Ga indicate its source area contains more crust-derived source components with a certain amount mantle source materials. Comprehensive analysis and study suggest that Halaerci granites may be composed of partial melting of argillaceous sandstone enriched with muscovite and biotite under low pressure and high temperature. Its source area has residual plagioclase, ilmenite and apatite and mixed with mantle source materials at the same time. It is concluded that
初始方程三层模式
雄山,张学洪,,邢如楠,怀义,赵昭,马福慧
科学通报 , 1974,
Abstract: 一、方程组及解法由Eular方程、连续方程及热通量方程所组成的初始方程为
东昆仑南缘布青山构造混杂带亿可哈拉尔花岗闪长岩年代学、地球化学特征及构造意义研究
李瑞保,裴先治,李佐臣,国超,刘成军,,刘战庆,裴磊
地球学报 , 2014, DOI: 10.3975/cagsb.2014.04.05
Abstract: 亿可哈拉尔花岗闪长岩体呈构造混杂块体出露于东昆仑南缘布青山构造混杂带,主要岩性为灰白色片麻状、似斑状粗粒花岗闪长岩和细粒花岗闪长岩。该岩体LA-ICP-MS锆石U-Pb测年结果为(436.9±5.7)Ma,形成于早志留世。岩石地球化学特征显示,岩体具有高硅(66.08%~72.22%)、富钠(4.61%~5.01%)、弱过铝(A/CNK介于1.04~1.11)钙碱性花岗岩特征,微量元素显示出典型的埃达克质花岗岩特征,即高Sr(280×10–6~493×10–6)、低Y(3.76×10–6~11.7×10–6)、Yb(0.28×10–6~0.86×10–6)、高Sr/Y(23.93~125.0)、轻重稀土元素分馏强烈、稀土元素配分曲线为向右倾斜型及铕异常不明显特征。岩石成因研究表明,亿可哈拉尔花岗闪长岩与俯冲洋壳板片熔融密切相关,为由俯冲洋壳变质形成的约含10%~20%的石榴石角闪岩部分熔融形成,源区熔融残留物主要为石榴石与角闪石。区域构造研究表明原特提斯构造域东昆仑古洋盆于寒武纪开始发生俯冲,俯冲作用可能持续至早志留世(437Ma),并发生洋壳熔融事件。
让爱因斯坦的精神永存

现代物理知识 , 1996,
Abstract: 在靠近德国柏林一个名叫卡普士的渔村,有一幢爱因斯坦生前住过的别墅。60年前,当他在这里思考宇宙本质的问题时,时常喜欢穿着便鞋,到这幢别墅后面幽静的树林中散步。如今,这幢房屋及松林依然存在。但是上个月,在靠近爱因斯坦过去常去散步的地方,一辆隆隆的推土机清出了一块用作停车场的空地。
东昆仑东段加鲁河中基性岩体环石英捕虏晶角闪石和黑云母矿物学特征及其对岩浆混合过程的约束

国超,裴先治,李瑞保,李佐臣,刘成军,,裴磊,张永明,王盟,张玉,李小兵
- , 2017, DOI: 10.13745/j.esf.yx.2017-2-31
Abstract: 加鲁河中基性岩体位于东昆仑造山带东段,岩体边部岩浆混合作用明显,富含暗色环边石英,是研究岩浆混合作用的理想地质体。本文在详细岩石学研究基础上,对寄主岩(香加南山花岗岩基)包体包体捕虏晶暗色环边石英的矿物(黑云母和角闪石)进行电子探针成分分析。研究表明,不同类型黑云母的Fe2+/(Fe2++Mg)比值基本一致,介于0.53~0.59,寄主岩黑云母的MgO含量较低(8.06%~8.29%),包体捕虏晶暗色环边的黑云母MgO含量较高(分别为9.38%~9.45%和9.25%~9.52%);不同类型角闪石的(Ca+AlⅣ)较高,大于0.5,寄主岩角闪石具有较高的FeOT含量(20.27%~21.01%)和较低Mg#值(45~47);包体包体捕虏晶暗色环边的角闪石具有较低的FeOT含量(分别为18.31%~19.49%、18.11%~18.90%和18.01%~18.43%)和较高的Mg#值(分别为50~54、52~53和55~60)。寄主岩的角闪石(为铁浅闪石)和黑云母(为铁质黑云母)具壳型特征;包体包体捕虏晶暗色环边的角闪石(为镁角闪石)和包体暗色环边的黑云母(为镁质黑云母)具壳幔型特征。寄主岩和包体捕虏晶的角闪石具有近似的成分和结晶环境,显示包体与寄主岩间存在成分交换。早期富水岩浆有利于磁铁矿和钛铁矿结晶,使晚期结晶的暗色环边矿物(黑云母和角闪石)具有较高的MgO含量和较低的FeOT含量,以及最低的结晶温度和压力。
银河系的晕不再巨大致密了吗
,霍明虹
现代物理知识 , 1996,
Abstract: 我们银河系的晕变得越来越陌生了。在20世纪70年代就有了确凿的证据,表明银河系的晕包含有大量暗物质。这个物质层延伸至银河系的边缘。这种看不见的物质肯定提供了维持整个银河系外部区域快速旋转的凝聚引力,而银河系仅靠看得见的星体和发光的气体的质量不足以保持它的完整。现在,由于采用了有关引力的奇特性质的技术,科学家们得知:有20%的暗物质是由小
电话客服人员的VDT工作站评估与听力损失之研究
An Ergonomics Study on VDT Workstation Evaluation and Hearing Loss of Telephone Customer Service Workers
 [PDF]

杨健, 吴水丕, 余丰荣, 均荣
Management Science and Engineering (MSE) , 2014, DOI: 10.12677/MSE.2014.31B011
Abstract:

企业为了更能快速的提供顾客服务,纷纷均设计算机电话客服中心。然而计算机操作人员却经常发生肌肉骨骼的适,因此,本研究共征募12性受试者与人因实验,研究的变项为键盘/鼠高及电话摆放位置,衡效标则包括接听电话正确、肌电讯号(EMG)、主观肌肉疲以及主观偏好。本研究结果发现:1) 综合各项衡效标后发现,以键盘/鼠托盘高 × 电话左边的配置方式为最佳;2) 主观肌肉骨骼评在键盘/鼠托盘高 × 电话左边的配置时,明显低于其他配置方式;3) 受试者主观偏好于键盘/鼠托盘高 × 电话左边的配置方式。研究结果将有助于企业界对于VDT工作配置提出建议。

The popularity and convenience of computers have boosted the development of the computer-telephone customer service industry. In order to provide faster service for customers, enterprises set

11立方米高爐冶炼庞家堡铁矿时的成渣过程
钧珊,
金属学报 , 1964,
Abstract: 报告了11立方米高炉冶炼庞家堡铁矿时炉料样品包括矿石和初渣的岩相分析結果,并結合溫度測定数据画出了高炉中等溫线及各区域的分布情况和各区炉料中的相成份。根据以上实驗結果,討論了冶炼一般酸性鉄矿时的初渣形成机理和硅酸铁的还原过程。
东昆仑东段哈拉尕吐花岗岩基岩浆混合作用:来自岩石学和矿物学约束
Magma Mixing in Halagatu Granitic Batholith from Eastern Part of the East Kunlun Orogenic Belt: Constraints from Lithology and Mineralogy

国超 ,裴先治 ,李瑞保 ,李佐臣 ,裴磊 ,刘成军,,王盟,张玉,李小兵
Chen Guochao
, Pei Xianzhi , Li Ruibao , Li Zuochen , Pei Lei , Liu Chengjun ,Chen Youxin , Wang Meng , Zhang Yu , Li Xiaobing

地球科学(中国地质大学学报) , 2018, DOI: 10.3799/dqkx.2018.559
Abstract: 哈拉尕吐花岗岩基位于东昆仑东段,其中花岗闪长岩岩浆混合作用明显,是研究岩浆混合作用的良好对象.从岩石学、岩相学和矿物化学等方面对哈拉尕吐花岗岩基进行了详细研究.电子探针结果显示:寄主岩斜长石的An值同相对应包体中斜长石捕掳晶近似;包体中基质斜长石大部分具核边结构,核部和边部An值存在间断;部分包体中浅色基质斜长石的An值与具核边结构斜长石的边部近似;辉长闪长岩中斜长石具较高的An值.寄主岩角闪石同相对应包体中角闪石捕掳晶的结晶温度、压力和氧逸度较为接近;包体中基质角闪石的结晶温度和压力低于寄主岩角闪石,氧逸度稍高于寄主岩角闪石;辉长闪长岩角闪石具有最高的结晶温度和压力及最低的氧逸度.哈图沟剖面和德福胜剖面寄主岩中的斜长石和角闪石的成分具有一定差别.岩浆不同期次侵入结晶和岩浆自身演化,使不同地点斜长石和角闪石的成分和物理化学特征具有一定变化.镁铁质岩浆位于地壳深部,氧逸度较低,使结晶的角闪石具有较高的形成压力和较低的氧逸度,斜长石具较高An值;随着镁铁质岩浆注入寄主岩,由于环境突变,使斜长石受到熔蚀;由于岩浆上侵以及两种岩浆物理化学性质差别较大,导致温度、压力和水饱和度降低,氧逸度升高,使包体中残留岩浆快速结晶,形成具核边结构、浅色均一的斜长石,以及结晶程度较差、较高氧逸度的角闪石.
Magma mixing events occurred widely and fiercely in Halagatu granitic batholith in eastern part of the East Kunlun orogenic belt, one of the ideal natural labs for magma mixing and mingling studies. We study through electron microprobe (EPMA) the lithology, petrography and mineral chemistry from the granitic batholith. The results reveal that plagioclases in the host rocks and those in the xenocrystals in MMEs have similar mineral features of anorthitealbite component value (An value). And most plagioclases in matrix of MMEs have corerim structures with an An value discontinuity. An values of the lightcolored matrix plagioclase in some MMEs are similar to those with corerim structures. The plagioclases in gabbro diorite have a higher An value. The crystallization temperature, pressure and oxygen fugacity of the hornblendes of the host rocks are similar to those of the hornblende xenocrystals in MMEs. The crystallization temperature and pressure of the matrix hornblende in the MMEs are lower than those in the host rocks, and the oxygen fugacity is slightly higher than that in the host rocks. The hornblendes in gabbro diorite have the highest crystallization temperature and pressure and the lowest oxygen fugacity. The compositions of the plagioclase and hornblende in the host rocks of the Hatugou section and Defusheng section are different. Intermittent magma intrusions and crystallizations, together with their evolution resulted in differences in composition, physical and chemical features varying with places. The mafic magma stayed in deep the Crust with lower oxygen fugacity, providing a condition of high pressure and low oxygen fugacity for hornblende crystallization and high An value for plagioclases. With the injection of mafic magma into the host rocks, due to environmental changes, plagioclases are subject to erosion. The temperature, pressure and water saturation reduced, whilst oxygen fugacity increased because of magma intrusion and physical and chemical differences for the two magmas.
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