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Age and petrogenesis of the newly discovered Early Permian granite in the Kumtor gold field， Kyrgyz Tien-Shan

Journal of Earth Science 2024年

作者： Kyiazbek Asilbekov Rustam Orozbaev Etienne Skrzypek chri.toph hauzenberger Elena Ivleva Daniela Gallhofer Jian-Feng Gao Nikolay Pak Anatoliy Shevkunov Anatoliy Bashkirov Aizat Zhaanbaeva Institute of Geology， National Academy of Sciences of the Kyrgyz Republic Institute of Earth Sciences， University of Graz State Key Laboratory of Ore Deposit Geochemistry， Institute of Geochemistry， Chinese Academy of Sciences Kumtor Gold Company CJSC

Permian intrusions are widespread in the Middle and Southern Tien Shan， with fewer occurrences in the Northern Tien-Shan. Notably， many of these intrusions are spatially associated with a variety of ore deposits， indicating a significant link between magmatic activity and mineralization processes in these areas. We studied granite samples recently recovered from drilling in the Kumtor gold field to evaluate their potential relationships with gold mineralization. We report major and trace element geochemistry， zircon U-Pb age and Hf isotope data for this so-called Kumtor granite. The Kumtor granite is metaluminous to peraluminous and belongs to the high-K and calc-alkaline series with I-type geochemical characteristics. The relatively high K2O and Na2O concentrations and low high field strength elements （HFSE） and heavy rare earth elements （HREE）， the presence of biotite within these I-type granites， together with their low zircon saturation temperatures （731–779 °C）， suggest that they were likely derived from a hydrous source formed by dehydration melting of mica-bearing， medium- to high-K metabasaltic rocks. Our zircon U-Pb dating results indicate that the Kumtor granite intruded at 293 ± 1.7 Ma， which is consistent with the age range of other Middle Tien-Shan granitoids. The zircon Hf isotopic composition is εHf（t）= –7.56 to –5.05， indicating an ancient （1.39 to 1.52 Ga） crustal origin. Petrographical， geochemical and geochronological data indicate that the Kumtor granite is similar to leuco-granites of the Terekty complex. Our results indicate that the Kumtor granite was emplaced in the early Permian in a post-collision setting and may have temporal and genetic relationships with gold mineralization.

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Geochemical Characteristics and New Eruption Ages of Ruby-Related Basalts from Southeast Kenya

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Journal of Earth Science 2014年第5期25卷 799-821页

作者： Tawatchai Chualaowanich Chakkaphan Sutthirat Visut Pisuttha-Arnond chri.toph hauzenberger Chinghua Lo Tongyi Lee Punya Charusiri Department of Geology Chulalongkorn University Patumwan Department of Mineral Resources Rama VI Rd. Ratchathewi Department of Earth Sciences Karlz-Fan University of Graz Department of Geoscience National Taiwan University Department of Earth Science National Taiwan Normal University

Two ruby-related basaltic fields were recently discovered in the southeast region of Kenya, exposed in the Nguu and Ngulai Hills vicinities. These fields host abundant deep-seated xenoliths, including corundum-bearing granulites. The basalts are alkaline affinity having compositions from foidrite to basanite. The Ngulai basalts have a wider range of SiO2（38.2 wt.%-44.8 wt.%） covering those of the Nguu basalts（38.7 wt.%-42.3 wt.%）. This overlapping behavior also holds for other major oxides and trace elements, e.g., Al2O3, Na2 O, K2 O, Cr, Ni, Rb and Ga. The overall OIB-like incompatible patterns with strong K depletion and slight spike of Ti enrichment signatures imply low degrees of partial melting of the upper mantle region source induced under a mantle plume-related process. The K-depletion signature indicates a residual K-bearing phase still retained in the source domain. Chondrite-normalized REE patterns exhibiting strong LREE enrichment without Eu anomalies suggest that plagioclase fractionation is insignificant. New 40Ar/39 Ar ages indicate eruption events occurred during the Pleistocene times, which are around 2 Ma for the Ngulai basalts and 0.9 to 1.6 Ma for the Nguu basalts. Clinopyroxene-basalt thermobarometric calculations yield the equilibrium P-T ranges of -8-29 kbar and 1 200-1 450 ℃.

关键词： ruby-related Cenozoic basalt Ar/Ar age corundum-bearing xenolith Kenya Nguu,Ngulai.

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饱和含混多孔介质中环绕水平圆柱的自然对流

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工程热物理学报 1994年第4期15卷 414-419页

作者： chri.,DM 王补宣清华大学热能工程系

本文运用达西流模型，对饱和含湿多孔介质中环绕水平等温圆柱发生的自然对流进行了数值模拟和分析。流函数和温度分布采用傅里叶级数的形式，以联立求解二维流动的控制方程组，傅里叶级数项的系数由一维常微分方程的解得到。文中同时给... 详细信息

本文运用达西流模型，对饱和含湿多孔介质中环绕水平等温圆柱发生的自然对流进行了数值模拟和分析。流函数和温度分布采用傅里叶级数的形式，以联立求解二维流动的控制方程组，傅里叶级数项的系数由一维常微分方程的解得到。文中同时给出局部和平均努谢尔数随修正瑞利数的变化关系以及修正瑞利数处在０．１～１０范围内时二维流场和温度场分布。

关键词：湿饱和多孔介质水平等温圆柱自然对流

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Eliciting Theory about a Retirement Process

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Journal of Software Engineering and Applications 2008年第1期1卷 1-7页

作者： Kajko-Mattsson Mira Anna hauzenberger Ralf Fredriksson Dept. of Computer and Systems Sciences Stockholm University Karolinska Institutet Sweden Royal Institute of Technology

The software community has been so much focused on creating and improving development and evolution processes, so that it has completely forgotten retirement. Today, there are no retirement process models whatsoever despite the fact that many software organizations desperately need guidelines for retiring their old software systems. In this paper, we elicit a retirement process model and compare it to the current retirement process models. Our goal is to educe theory about retirement process, evaluate current retirement process standards and provide feedback for their extension. The elicitation process has been made within one Nordic financial company.

关键词： Archival Conversion Migration Process Model

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Origin and Petrogenetic Implications of Spessartine Garnet in Highly-Fractionated Granite from the Central Eastern Desert of Egypt

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Acta Geologica Sinica(English Edition) 2020年第3期94卷 763-776页

作者： Mabrouk SAMI Theodoros NTAFLOS Haroun A.MOHAMED Esam S.FARAHAT chri.toph hauzenberger Nasser M.MAHDY Khaled M.ABDELFADIL Douaa FATHY Geology Department Faculty of ScienceMinia UniversityEl-Minia 61519Egypt Department of Lithospheric Research University of ViennaAlthanstrasse 14A-1090 ViennaAustria Institute of Mineralogy and Petrology Karl-Franzens UniversityGrazAustria Nuclear Materials Authority P.O.530El-MaadiCairoEgypt Geology Department Faculty of ScienceSohag UniversityEgypt

A highly-fractionated garnet-bearing muscovite granite represents the marginal granitic facies of the Abu-Diab multiphase pluton in the Central Eastern Desert of Egypt. New electron microprobe analyses(EMPA) and laser ablation inductively coupled plasma mass spectrometry(LA-ICP-MS) data from garnets are reported, in order to constrain their origin and genesis. Garnet in the Abu-Diab host granite is euhedral to subhedral, generally homogeneous and, in rare cases, it shows weak zonation. The garnet contains appreciable amounts of MnO and FeO, with lesser amounts of MgO and CaO, yielding an end-member formula of Sps61–72Alm25–35Prp1–4Adr0–1. Moreover, it is depleted in large ion lithophile elements(LILE) with lower values of Ba, Nb and Sr relative to the primitive mantle. Additionally, it contains high concentrations of HREE and Y and their REE pattern shows strong negative Eu anomalies. The garnet was crystallized under relatively low temperature(646°C–591°C) and pressure(< 3 kbar) conditions. The textural and chemical features indicate that the garnet is magmatic in origin and is chemically similar to that from highly-fractionated A-type granite. It was probably formed at the expense of biotite in a highly-evolved MnO-rich magma and/or by hydroxyl complexing of Mn during the ascending fluid phases.

关键词： spessartine garnet LA-ICP-MS A-type granite Abu-Diab Egypt

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VLSI RISC芯片的系统设计

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计算机工程与应用 1990年第9期26卷 79-83页

作者： chri Rowen 张兴华

本文讨论了VLSIRISCR2000芯片的系统设计。首先提出R2000芯片的系统微体系结构,分别对主流水线控制单元、执行单元、地址单元、转换查询缓冲器、系统协处理器和外部接口控制器的原理、作用及功能进行了论述;其次讨论了五级流水线技术,... 详细信息

本文讨论了VLSIRISCR2000芯片的系统设计。首先提出R2000芯片的系统微体系结构,分别对主流水线控制单元、执行单元、地址单元、转换查询缓冲器、系统协处理器和外部接口控制器的原理、作用及功能进行了论述;其次讨论了五级流水线技术,简单指令格式和简单的寻址方式;最后介绍了R2000 VLSI实现所采用的大量技术、方法、校验手段和工艺标准。

关键词： VLSI RISC 芯片系统设计

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确定小型试样中残余奥氏体和铁素体数量的便利设备

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钢铁 2005年第6期40卷 84-86页

作者： E. Wirthl R. Angerer K. hauzenberger 奥钢联机电公司

精确确定残余奥氏体数量对优化低合金TRIP钢十分重要。介绍了一种磁性测量方法及设备,可以方便快捷地确定残余奥氏体的数量。针对工业生产的TRIP钢试样进行的实验表明,该方法准确性很高,与X射线测量结果非常吻合。残余奥氏体数量的精确... 详细信息

精确确定残余奥氏体数量对优化低合金TRIP钢十分重要。介绍了一种磁性测量方法及设备,可以方便快捷地确定残余奥氏体的数量。针对工业生产的TRIP钢试样进行的实验表明,该方法准确性很高,与X射线测量结果非常吻合。残余奥氏体数量的精确确定有助于更好地了解冶金工艺,从而优化TRIP钢种的生产。

关键词： TRIP钢残余奥氏体铁素体磁性分析法

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针对机械磨损过程的功能检测模型

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中国机械工程 1998年第12期9卷 34-37页

作者：贾希胜 chri.,AH 英国Ｓａｌｆｏｒｄ大学

在以可靠性为中心的维修（ＲＣＭ）分析中，通常对由机械磨损引起的故障模式采用功能检测策略加以预防，而制定此类问题的功能检测策略时需确定下列参数：①潜在故障状态（用磨损量表示），检测时如果发现产品磨损量达到或超过该状态，... 详细信息

在以可靠性为中心的维修（ＲＣＭ）分析中，通常对由机械磨损引起的故障模式采用功能检测策略加以预防，而制定此类问题的功能检测策略时需确定下列参数：①潜在故障状态（用磨损量表示），检测时如果发现产品磨损量达到或超过该状态，应当予以更换；②检测的间隔期，分首次检测间隔期与重复间隔期。借助于维修延迟时间的概念并假设磨损过程服从Ｗｉｅｎｅｒ过程，建立基于风险、可用度与费用的功能检测模型，用于确定上述检测参数。

关键词：功能检测预防性维修策略延迟时间机械磨损

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内吗啡—1和2抑制人血管交感神经去甲肾上腺素释放：缺乏与μ3阿 …

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中国药理学报 1998年第5期19卷 403-407页

作者： chri.,MR Cate.,F

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Metamorphic stages in mountain belts during a Wilson cycle:A case study in the central Sanandaj-Sirjan zone(Zagros Mountains,Iran)

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Geoscience Frontiers 2022年第2期13卷 430-459页

作者： Farzaneh Shakerardakani Franz Neubauer Manfred Bernroider Fritz Finger chri.toph hauzenberger Johann Genser Michael Waitzinger Behzad Monfaredi Department of Geography and Geology Paris-Lodron University of SalzburgHellbrunner Str.34A-5020 SalzburgAustria State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China Department of Chemistry and Physics of Materials Paris-Lodron University of SalzburgAustria Institute of Earth Sciences-NAWI Graz Geocenter University of GrazUniversitatsplatz 2Graz 8010Austria

Polymetamorphic units are important constituents of continent-continent collisional orogens,and rift metamorphic assemblages are often overprinted by subsequent metamorphism during subduction and *** study reports the metamorphic conditions and evolution of the Dorud-Azna metamorphic units in the central part of the Sanandaj-Sirjan zone(SSZ),***,new geothermobarometry results are integrated with ^(40)Ar/^(39)Ar mineral and Th-U-Pb monazite and thorite ages to provide new insight of polyphase metamorphism in the two different basement units of the SSZ,the lower Galeh-Doz orthogneiss and higher Amphibolite-Metagabbro *** the Amphibolite-Metagabbro unit,staurolite micaschist underwent a prograde P-T evolution from 640±20℃/6.2±0.8 kbar in garnet cores(M1)to 680±20℃/7.2±1.0 kbar in garnet rims(M2).Three Th-U-Pb monazite ages of 306±5 Ma,322±28 Ma and 336±39 Ma from the garnet-micaschists testify the Carboniferous age of M1 *** the same unit,the metagabbro records P-T conditions of 4.0±0.8 kbar and 580±50℃ in the(magmatic)amphibole core(Late Carboniferous intrusion)to 7.5±0.7 kbar and 700±20℃ in the amphibole rim indicating a prograde P-T path during subsequent burial(M1).New ^(40)Ar/^(39)Ar dating of white mica from the staurolite micaschist yielded a staircase pattern ranging from 36±12 Ma to 170±2 *** implies polymetamorphism with a minimum Late Jurassic cooling age through the Ar retention temperature of ca.425±25℃ after M2 metamorphism and a Paleogene low-grade metamorphic overprint(M3),while ^(40)Ar/^(39)Ar white mica dating of garnet micaschist yielded a plateau age of 137.84±0.65 *** therefore interpret the amphibolite-grade metamorphism M2 to have predated 170 Ma and is likely between 180 and 200 ***,it is overprinted at about 36 Ma under retrogressive low-grade M3 metamorphism(at temperatures of~350-240℃)during final shortening and *** the underlying Galeh-Doz unit,the Panafrican granitic orthogneiss i

关键词： Carboniferous Polyphase metamorphism Petrochronology Chemical Th-U-Pb age dating ^(40)Ar/^(39)Ar dating Collisional orogen

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