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| 1 | Hydrothermal ore deposits in collisional orogens显示文摘Hydrothermal ore deposits at convergent plate boundaries represent extraordinary metal enrichment in the continental crust. They are generally associated with felsic magmatism in extensional settings at high thermal gradients. Although their formation is common during accretionary orogeny, more and more ore deposits have been discovered recently in the collisional orogens of China. Because collisional orogeny was operated in a compressional regime at low thermal gradients, it is not favorable for mobilization of ore-forming elements and thus for the production of hydrothermal ore deposits. Nevertheless, continental collision is generally preceded by oceanic subduction, which enables the preliminary enrichment of ore-forming elements in the mantle wedge due to chemical metasomatism by subducting slab-derived fluids. This gave rise to metal pre-enriched domains in the overriding lithosphere, which may be reactivated by extensional tectonism for hydrothermal mineralization either immediately during accretionary orogeny or at a later time during and after collisional orogeny. It is these tectonic processes that have resulted in the progressive enrichment of ore-forming elements through the geochemical differentiation of the subducting oceanic crust, the metasomatic mantle domains and the mafic juvenile crust, respectively, at different depths. Finally, the reactivation of metal pre-enriched domains by continental rifting in the orogenic lithosphere is the key to the metallogenesis of collisional orogens. | Yongfei Zheng Jingwen Mao Yanjing Chen Weidong Sun Pei Ni Xiaoyong Yang | 2019 | Science Bulletin2019,64,3: | 26 |
| 2 | 新疆望峰金矿成矿流体研究及其成因意义显示文摘新疆望峰金矿,产于中天山结晶基底中的韧性剪切带内。围岩蚀变和流体包裹体研究表明,成矿过程包括了3个阶段,从早到晚有石英黄铁矿阶段、多金属硫化物阶段和石英碳酸盐阶段,温度分别集中在360~520℃、240~360℃和120~240℃;矿化以第Ⅱ阶段为主。成矿流体的δ18O值变化于1.15‰~2.70‰之间,属于变质热液与大气降水热液的混合流体。包裹体成分表明成矿流体来源较浅,但有利于金矿化;CO2/H2O比值多大于0.026,也有利于成矿。而包裹体捕获压力表明成矿作用发生在5.6~1.2km深度范围,主要发生在1.9km左右;矿化过程与地壳抬升伸展的过程一致,自然亦与碰撞造山体制的矿化规律一致。因此,古生代末期的碰撞造山作用导致了望峰金矿的形成,冰达坂断裂两侧是寻找望峰式金矿的有利地带。石英红外光谱分析表明,CO2光密度(D2)及其与H2O光密度(D1)的比值(D2/D1)普遍较高,指示矿化较强;D2>0.55和D2/D10.26是该区富金样品的标志。 | Chen Yanjing 1) Li Xin 1) Jing Jun 2) Gao Xiuli 1) Chen Huayong 1) Wu Xidan 2) Wu Dehua 2) ( 1) Department of Geology, Peking University 2)Team 15 of Gold Headquarters, MMIC, Urumqi ) | 1998 | 地球学报(中国地质科学院院报)1998,19,2: | 18 |
| 3 | Blocking FSH inhibits hepatic cholesterol biosynthesis and reduces serum cholesterol显示文摘Menopause is associated with dyslipidemia and an increased risk of cardio-cerebrovascular disease.The classic view assumes that the underlying mechanism of dyslipidemia is attributed to an insufficiency of estrogen.In addition to a decrease in estrogen, circulating follicle-stimulating hormone (FSH)levels become elevated at menopause.In this study,we find that blocking FSH reduces serum cholesterol via inhibiting hepatic cholesterol biosynthesis.First,epidemiological results show that the serum FSH levels are positively correlated with the serum total cholesterol levels,even after adjustment by considering the effects of serum estrogen,in addition,the prevalence of hypercholesterolemia is significantly higher in peri-menopausal women than that in premenopausal women.Furthermore,we generated a mouse model of FSH elevation by intraperitoneally injecting exogenous FSH into ovariectomized (OVX)mice,in which a normal level of estrogen (E2)was maintained by exogenous supplementation. Consistently,the results indicate that FSH,independent of estrogen,increases the serum cholesterol level in this mouse model. Moreover,blocking FSH signaling by anti-FSHβ antibody or ablating the FSH receptor (FSHR)gene could effectively prevent hypercholesterolemia induced by FSH injection or high-cholesterol diet feeding.Mechanistically,FSH,via binding to hepatic FSHRs, activates the Gi2α/β-arrestin-2/Akt pathway and subsequently inhibits the binding of FoxO1 with the SREBP-2 promoter,thus preventing FoxO1 from repressing SREBP-2 gene transcription.This effect,in turn,results in the upregulation of SREBP-2,which drives HMGCR nascent transcription and de novo cholesterol biosynthesis,leading to the increase of cholesterol accumulation.This study uncovers that blocking FSH signaling might be a new strategy for treating hypercholesterolemia during menopause, particularly for women in peri-menopause characterized by FSH elevation only. | Yanjing Guo Meng Zhao Tao Bo Shizhan Ma Zhongshang Yuan Wenbin Chen Zhao He Xu Hou Jun Liu Zhenhai Zhang Qiang Zhu Qiangxiu Wang Xiaoyan Lin Zhongli Yang Min Cui Lu Liu Yujie Li Chunxiao Yu Xiaoyi Qi Qian Wang Haiqing Zhang Qingbo Guan Lifang Zhao Shimeng Xuan Huili Yan Yanliang Lin Li Wang Qihang Li Yongfeng Song Ling Gao Jiajun Zhao | 2019 | Cell Research2019,29,2: | 16 |
| 4 | Global glaciations and atmospheric change at ca.2.3 Ga显示文摘岩石层位学的编译和 geochronological 数据为 Palaeoproterozoic 冰川的忍受 diamictite 继任获得了的这份报纸,并且从而提供卓见进理解引起 Huronian 冻结成冰事件的地质的进程。为这个冻结成冰事件的外观的证据的多数能与 Kenorland supercontinent 决裂有关,对 biogeochemical 的重要大气的变化,以及花蕾联盟氧的光合作用。在这份报纸, Huronian 冻结成冰事件被抑制在 2.292.25 Ga 期间同时地发生了,由包括 pre-2.3 Ga 水圈氧化和 post-2.3 Ga 空气氧化的大氧化事件特征的戏剧的环境变化伴随了。 | Haoshu Tang Yanjing Chen | 2013 | Geoscience Frontiers2013,4,5: | 14 |
| 5 | AMPK activation by peri-sciatic nerve administration of ozone attenuates CCl-induced neuropathic pain in rats显示文摘 | Lijuan Lu Cailong Pan Lu Chen Liang Hu Chaoyu Wang Yuan Han Yanjing Yang Zhixiang Cheng Wen-Tao Liu | 2017 | Journal of Molecular Cell Biology2017,9,2: | 14 |
| 6 | Progress and records in the study of endogenetic mineralization during collisional orogenesis显示文摘To develop and perfect the theory of plate tectonics and regional metallogeny, metal-logenesis during collisional orogenesis should be thoroughly studied and will attract increasing at-tention of more and more scientists. This paper presents the main aspects of research and discus-sions on metallogenesis during collisional orogenesis after the development of plate tectonics, and accordingly divides the study history into two stages, i.e. the junior stage during 1971-1990 and the senior stage after 1990. Beginning with the negation of mineralization in the collision regime by Guild (1971), the focus of study was put on whether there occurred any mineralization during collisional orogenesis at the junior stage. At the senior stage, which is initiated by the advance of met-allogenic and petrogenic model for collisional orogenesis, scientists begin to pay their attention to the geodynamic mechanism of metallogenesis, spatial and temporal distribution of ore deposits, ore-forming fluidization, relationship | Yanjing Chen Huayong Chen Yulin Liu Guangjun Guo Yong Lai Shan Qin Baoling Huang Zengjie Zheng Yinghui Sui Chao Li et al. | 2000 | Chinese Science Bulletin2000,45,1: | 13 |
| 7 | Genetic and biological characteristics of the globally circulating H5N8 avian influenza viruses and the protective efficacy offered by the poultry vaccine currently used in China显示文摘The H5N8 avian influenza viruses have been widely circulating in wild birds and are responsible for the loss of over 33 million domestic poultry in Europe, Russia, Middle East, and Asia since January 2020. To monitor the invasion and spread of the H5N8 virus in China, we performed active surveillance by analyzing 317 wild bird samples and swab samples collected from 41,172 poultry all over the country. We isolated 22 H5N8 viruses from wild birds and 14 H5N8 viruses from waterfowls. Genetic analysis indicated that the 36 viruses formed two different genotypes: one genotype viruses were widely detected from different wild birds and domestic waterfowls;the other genotype was isolated from a whopper swan. We further revealed the origin and spatiotemporal spread of these two distinct H5N8 virus genotypes in 2020 and 2021. Animal studies indicated that the H5N8 isolates are highly pathogenic to chickens, mildly pathogenic in ducks, but have distinct pathotypes in mice. Moreover, we found that vaccinated poultry in China could be completely protected against H5N8 virus challenge. Given that the H5N8 viruses are likely to continue to spread in wild birds, vaccination of poultry is highly recommended in high-risk countries to prevent H5N8 avian influenza. | Pengfei Cui Xianying Zeng Xuyong Li Yanbing Li Jianzhong Shi Conghui Zhao Zhiyuan Qu Yanwen Wang Jing Guo Wenli Gu Qi Ma Yuancheng Zhang Weipeng Lin Minghui Li Jingman Tian Dongxue Wang Xin Xing Yanjing Liu Shuxin Pan Yaping Zhang Hongmei Bao Liling Liu Guobin Tian Chengjun Li Guohua Deng Hualan Chen | 2022 | Science China(Life Sciences)2022,65,4: | 12 |
| 8 | Effective and persistent antitumor activity of HER2-directed CAR-T cells against gastric cancer cells in vitro and xenotransplanted tumors in vivo显示文摘 | Yanjing Song Chuan Tong Yao Wang Yunhe Gao Hanren Dai Yelei Guo Xudong Zhao Yi Wang Zizheng Wang Weidong Han Lin Chen | 2018 | Protein & Cell2018,9,10: | 11 |
| 9 | Comparison of the Typical Metallogenic Systems in the North Slope of the Tongbai-East Qinling Mountains and its Geologic Implications显示文摘The Tongbai-East Qinling Mountains,an important part of the Central orogenic belt,is one of the most important metallogenic belts in China and contains lots of orogenic-type and VMS-type (Volcanogenic Massive Sulfide type)metallogenic systems.The Dahe and Shuidongling VMS-type Cu-Zn deposits,located in the Erlangping Group in Tongbai and East Qinling Mountains,respectively, show similar geological and geochemical features.The Huoshenmiao Formation in the East Qinling region and the Liushanyan Formation in the Tongbai region are spilite-keratophyre sequences occurring in the western and eastern sides of the Nanyang Basin,respectively,and are interpreted to be equivalent to each other.The orogenic-type Au-Ag deposits can be subdivided into two styles;namely, fault-or structure-controlled(e.g.Yindonggou)and stratabound(e.g.Poshan).The Poshan and Yindongpo orogenic-type Au-Ag deposits,whose ore bodies are strictly hosted in carbonaceous strata in the Tongbai Mountains,show obvious stratabound characteristics.Their ore-fluids are enriched in K^+ and SO_4^(2-)and are regarded as K^+-SO_4^(2-)types.The Pb-isotope ratios of sulfides of the ores are extremely uniform and significantly different from those of the tectonostratigraphic terranes of the Qinling orogens except for the ore-hosting strata of the Waitoushan Formation.The Yindonggou and Xuyaogou orogenic Au-Ag deposits in the East Qinling Mountains,whose ore bodies are hosted in the faults cutting the hosting strata or granite body,show fault-controlled characteristics.Their ore-fluids belong to the Na^+-Cl^-type.The Pb-isotope ratios of sulfides of ores are similar to those of the northern Qinling orogenic belt.The Waitoushan Formation,dominated by carbonaceous sericite-rich schists and only occurring in Tongbai region,should be detached from the Erlangping Group,which occurs both in the western and eastern sides of the Nanyang Basin.Future ore exploration in the Tongbai-East Qinling Mountains should focus on fault-controlled Au-Ag lodes. | ZHANG Jing CHEN Yanjing QI Jinping GE Jun | 2009 | Acta Geologica Sinica(English Edition)2009,83,2: | 11 |
| 10 | Geochemistry and Genesis of the Late Jurassic Granitoids at Northern Great Hinggan Range:Implications for Exploration显示文摘迟了的侏罗记的 Longgouhe 和 Ershiyizhan 侵入,在北大 Hinggan 范围的上面的 Heilongjiang 盆定位了,仔细与斑岩 Cu-Au 矿化作用有关。在岩性学,侵入是石英闪长岩,石英 monzodiorite 和 high-K 的 granodiorite 计算碱的系列,与 shoshonite 的次要的方面系列。他们的 SiO2 和 Al2O3 内容分别地从 61.37% ~ 66.59% 和 15.35% ~ 17.06%。MgO 内容从 2.02% ~ 3.47%,与 4459 的 Mg# 索引。(La/Yb ) N 和 Eu/Eu * 价值从 16.85 ~ 81.73 和 0.68 ~ 0.93 分别地,出现的强壮的区别稀土元素元素(REE ) adakites 的类似于那些的模式。岩石在 Ba, Sr 和轻 REE (LREE ) 被充实,显然在 Nb 和 Ta 弄空,稍微弄空在 Rb 和 Ti,和在 Yb 和 Y 的穷人与 0.311.32 ppm 和 4.3212.07 ppm 的 Yb 和 Y 内容,分别地。是由 67.74220.60 的 Sr/Y 比率显示了,岩石被 low-Y 和 high-Sr 内容描绘,它在世界上描绘 adakites。整体地, geochemical tracers 建议感兴趣的侵入是 adakitic 岩石。给 Paleo 亚洲的海洋和蒙古人鄂霍次克海海洋在晚古生代、二叠中间的侏罗记被关上分别地,感兴趣的侵入应该被 delaminated 外壳的部分融化形成,它在 collisional 造山运动在之间期间被变厚西伯利亚并且 Mongolian-Sinokorean 大陆。 | WU Guang CHEN Yanjing SUN Fengyue ZHANG Zhe LIU Ankun LI Zhitong | 2010 | Acta Geologica Sinica(English Edition)2010,84,2: | 10 |
| 11 | The effect of Scuteilaria baicalensis stem-leaf flavonoids on spatial learning and memory in chronic cerebral ischemia-induced vascular dementia of rats显示文摘Flavonoids 被显示了改进认知功能并且推迟痴呆前进。然而,内在的机制留下逃犯。在现在的学习,我们检验了从 S 提取的黄芩 baicalensis 茎叶总数 flavonoids (SSTF ) 的效果。在脉管的痴呆(VaD ) 的空间学习和记忆上的 baicalensis Georgi 老鼠模型并且探索了它的分子的机制。VaD 老鼠被普通颈动脉动脉的永久双边的吸藏开发。在恢复以后的七天, VaD 老鼠与 SSTF 的 50 或 100 mg/kg 被对待 60 天。空间学习和记忆在莫利斯舞水迷宫(MWM ) 被评估测试。字形物 hyperphosphorylation 和相关蛋白质 kinases 或磷酸酶的层次被西方的污点分析检验。在 VaD 老鼠,在 100 mg/kg 的 SSTF 处理显著地在在 MWM 测试训练试用减少了逃跑潜伏。在探针试用, SSTF 治疗在目标象限增加了寻找的时间和旅行距离。SSTF 处理在 VaD 老鼠在外皮和马头鱼尾的怪兽禁止了字形物 phosphorylation。同时, SSTF 减少了肝糖 synthase kinase 的活动 3 并且 cyclin 依赖的 kinase 5 在 VaD 老鼠。相反, SSTF 处理在 VaD 老鼠增加了蛋白质磷酸酶 2A 子单元 B 的水平。SSTF 处理显著地在 VaD 老鼠改进了空间认知。我们的结果建议 SSTF 可以通过在击以后协调 kinases 和磷酸酶的活动减轻 tau-hyperphosphorylation-induced neurotoxicity。SSTF 可以为 VaD 被开发进有希望的新奇治疗学。 | Yanjing Cao Lizhen Liang Jian Xu Jiali Wu Yongxing Yan Ping Lin Qiang Chen Fengming Zheng Qin Wang Qian Ren Zengmei Gou Yifeng Du | 2016 | Acta Biochimica et Biophysica Sinica2016,48,5: | 10 |
| 12 | Mineralization during Collisional Orogenesis and Its Control of the Distribution of Gold and Other Deposits in the Junggar Orogen, Xinjiang, China显示文摘The Junggar orogen, Xinjiang, China, is an important part of the Ural-Mongolian orogen.The collisional orogenesis in this region occurred primarily in the Carboniferous and Permianwith an evolutional process of early compression and late extension. Mineralization of gold andother metals in the Junggar orogen occurred mainly in the Permian and in a few cases in theLate Carboniferous. The deposits are largely distributed in areas where collisional orogenesiswas intensive and formed in a transitional stage from compression to extension. Therefore, goldmineralization in the Junggar orogen is fully consistent with the collisional orogenesis in time,space and geodynamic setting. This indicates that the mineral deposit model of collisionalorogenesis is applicable to prospecting and study of ore deposits in the Junggar orogen.Furthermore, the factual distribution of gold and other deposits in this region is just the same asthe collisional orogenic model presents. | Chen Yanjing Department of Geology, Peking University, Beijing Liu Xinzhu | 1997 | Acta Geologica Sinica(English Edition)1997,71,1: | 9 |
| 13 | Machine learning assisted design of γ′-strengthened Co-base superalloys with multi-performance optimization显示文摘Designing a material with multiple desired properties is a great challenge,especially in a complex material system.Here,we propose a material design strategy to simultaneously optimize multiple targeted properties of multi-component Co-base superalloys via machine learning.The microstructural stability,γ′solvus temperature,γ′volume fraction,density,processing window,freezing range,and oxidation resistance were simultaneously optimized. | Pei Liu Haiyou Huang Stoichko Antonov Cheng Wen Dezhen Xue Houwen Chen Longfei Li Qiang Feng Toshihiro Omori Yanjing Su | 2020 | npj Computational Materials2020,,1: | 8 |
| 14 | Temporal variation of suspended sediment load in the Pearl River due to human activities显示文摘在到 2006 的从 1950 年代的三个 hydrologic 车站的沉积流动上的数据被利用在从珍珠河送到海洋的推迟的沉积负担学习十、年度、每月的变化。结果证明包括西方河,北方河和东方河,在来自三条主要支流的沉积流动的变化是空间地不一致的。因为将近 90% 推迟的沉积负担来自西方河,它的变化在全部珀尔河里统治了沉积流动的全面趋势。尽管一个重要减少趋势在全部的沉积流动的年度变化存在,十的变化能被划分成一个增加的阶段和一个减少的阶段,与在在 1980 年代末的二个阶段之间的转弯的点。从 1950 年代到 1980 年代,平均的年度河沉积流动增加了 30.43% 。然而,自从 1990 年代,沉积流动显著地减少了,与是的平均沉积流动在 2000 年代的 38.60% 更少比那在 1950 年代。当前的沉积流动也是 52.93% 不到它在 1980 年代的山峰。到海的推迟的沉积负担运输的每月的变化模式更有趣。为西方河,所有月显示出一个减少的趋势,并且为大多数月,减小价值是重要的。然而,为东方河,沉积负担在湿季节在旱季和一个增加趋势显示出一个减少趋势。回归分析的方法被用来在沉积流动上在变化学习降水的影响。气候变化不是在在推迟的沉积负担的变化后面的主要驱动力,这被发现。在 1990 年代前,集中的陆地使用破坏了上面的珀尔河的脆弱的生态系统,并且加快了岩石 desertification 的过程。因而,加重了侵蚀在推迟的沉积负担引起了增加的土壤。然而,在水库以内的沉积保留开始了在 1990 以后在大水坝的巨大的构造以后起一个主导的作用,并且在送到海洋的推迟的沉积负担导致减少。 | Wei ZHANG Shousheng MU Yanjing ZHANG Kaimin CHEN | 2011 | International Journal of Sediment Research2011,26,4: | 6 |
| 15 | The Geology and Tectonic Settings of China's Mineral Deposits by Franco Pirajno显示文摘Springer Verlag,Berlin,2013,679 pp.ISBN:978-94-007-4443-1 China is the third largest country in the world,with a land area of about 9.6 million km2.It is endowed with abundant mineral resources,and the metal mining activity can be traced back to ca. 8000 years ago.However,due to language barrier,little has been known about the geology and tectonics to the outside world | Yanjing Chen | 2013 | Geoscience Frontiers2013,4,4: | 5 |
| 16 | Homoharringtonine is a safe and effective substitute for anthracyclines in children younger than 2 years old with acute myeloid leukemia显示文摘Homoharringtonine (HHT),a plant alkaloid from Cephalotaxus harringtonia,exhibits a unique anticancer mechanism and has been widely used in China to treat patients with acute myeloid leukemia (AML) since the 1970s.Trial SCMC-AML-2009 presented herein was a randomized clinical study designed based on our previous findings that pediatric AML patients younger than two years old may benefit from HHT-containing chemotherapy regimens.Patients randomized to arm A were treated with a standard chemotherapy regimen comprising mainly of anthracyclines and cytarabine (Ara-C),whereas patients in arm B were treated with HHTcontaining regimens in which anthracyclines in all but the initial induction therapy were replaced by HHT.From February 2009 to November 2015,59 patients less than 2 years old with de novo AML (other than acute promyelocytic leukemia) were recruited.A total of 42 patients achieved a morphologic complete remission (CR) after the first course,with similar rates in both arms (70.6% vs.72.0%).At the end of the follow-up period,40 patients remained in CR and 5 patients underwent hematopoietic stem cell transplantation in CR,which could not be considered as events but censors.The 5-year event-free survival (EFS) was 60.2%± 9.6% for arm A and 88.0%± 6.5% for arm B (P=0.024).Patients in arm B experienced shorter durations of leukopenia,neutropenia,and thrombocytopenia and had a lower risk of infection during consolidation chemotherapy with high-dosage Ara-C.Consequently,the homoharringtonine-based regimen achieved excellent EFS and alleviated hematologic toxicity for children aged younger than 2 years with de novo AML compared with the anthracycline-based regimen. | Xiaoxiao Chen Yanjing Tang Jing Chen Ru Chen Longjun Gu Huiliang Xue Ci Pan Jingyan Tang Shuhong Shen | 2019 | Frontiers of Medicine2019,13,3: | 3 |
| 17 | Double lock of a potent human therapeutic monoclonal antibody against SARS-CoV-2显示文摘Receptor recognition and subsequent membrane fusion are essential for the establishment of successful infection by SARS-CoV-2.Halting these steps can cure COVID-19.Here we have identified and characterized a potent human monoclonal antibody,HB27,that blocks SARS-CoV-2 attachment to its cellular receptor at sub-nM concentrations.Remarkably,HB27 can also prevent SARS-CoV-2 membrane fusion.Consequently,a single dose of HB27 conferred effective protection against SARS-CoV-2 in two established mouse models.Rhesus macaques showed no obvious adverse events when administrated with10 times the effective dose of HB27.Cryo-EM studies on complex of SARS-CoV-2 trimeric S with HB27 Fab reveal that three Fab fragments work synergistically to occlude SARS-CoV-2 from binding to the ACE2 receptor.Binding of the antibody also restrains any further conformational changes of the receptor binding domain,possibly interfering with progression from the prefusion to the postfusion stage.These results suggest that HB27 is a promising candidate for immuno-therapies against COVID-19. | Ling Zhu Yong-Qiang Deng Rong-Rong Zhang Zhen Cui Chun-Yun Sun Chang-Fa Fan Xiaorui Xing Weijin Huang Qi Chen Na-Na Zhang Qing Ye Tian-Shu Cao Nan Wang Lei Wang Lei Cao Huiyu Wang Desheng Kong Juan Ma Chunxia Luo Yanjing Zhang Jianhui Nie Yao Sun Zhe Lv Neil Shaw Qianqian Li Xiao-Feng Li Junjie Hu Liangzhi Xie Zihe Rao Youchun Wang Xiangxi Wang Cheng-Feng Qin | 2021 | National Science Review2021,8,3: | 3 |
| 18 | Paleoproterozoic positive δ 13 C carb excursion in the northeastern Sino-Korean craton: Evidence of the Lomagundi Event显示文摘 | Haoshu Tang Yanjing Chen Guang Wu Yong Lai | 2010 | Gondwana Research2010,,2: | 2 |
| 19 | Besshi-type mineral systems in the Palaeoproterozoic Bryah Rift-Basin, Capricorn Orogen, Western Australia: Implications for tectonic setting and geodynamic evolution显示文摘In this contribution we use VMS mineral systems in the Bryah rift-basin to constrain the tectonic setting of the widespread mafic and ultramafic magmatism that characterises the rift-basin in question.Two distinct,but temporally closely associated,lithostratigraphic sequences,Narracoota and Karalundi Formations,are discussed.The Karalundi Formation is the main host of VMS mineral systems in the region.The Karalundi Formation consists of turbiditic and immature clastic sediments,which are locally intercalated with basaltic hyaloclastites,dolerites and banded jaspilites.We propose that the basaltic hyaloclastites,dolerites and elastics and jaspilites rocks,form a distinct unit of the Karalundi Formation,named Noonyereena Member.The VMS mineral systems occur near the north-east trendingJenkin Fault and comprise the giant and world-class DeCrussa and the Red Bore deposits.The nature of these deposits and their intimate association with terrigenous clastic rocks and dominantly marine mafic volcanic and subvolcanic rocks,as well as the common development of peperitic margins,are considered indicative of a Besshi-type environment,similar to that of present-day Gulf of California.Our Re-Os age data from a primary pyrite yielded a mean model age of 2012 ± 48 Ma,which coincides(within error) with recent published Re-Os data(Hawke et al.,2015) and confirms the timing of the proposed geodynamic evolution.We propose a geodynamic model that attempts to explain the presence of the Narracoota and Karalundi Formations as the result of mantle plume activity,which began with early uplift of continental crust with intraplate volcanism,followed by early stages of rifting with the deposition of the Karalundi Formation(and Noonyereena Member),which led to the formation of Besshi-type VMS deposits.With on-going mantle plume activity and early stages of continental separation,an oceanic plateau was formed and is now represented by mafic-ultramafic rocks of the Narracoota Formation. | Franco Pirajno Yanjing Chen Nuo Li Chao Li Limin Zhou | 2016 | Geoscience Frontiers2016,7,3: | 2 |
| 20 | Initiating,growing and cracking of hydrogen blisters显示文摘The growing process of a hydrogen blister in a wheel steel was observed in situ with an optical microscope, and the fracture surfaces formed from broken blisters on a wheel steel and bulk metallic glass were investigated. The initiating, growing, cracking and breaking of hydrogen blis-ters are as follows. Supersaturated vacancies can increase greatly during charging and gather together into a vacancy cluster (small cavity). Hydrogen atoms become hydrogen molecules in the vacancy cluster and hydrogen molecules can stabilize the vacancy cluster. The small cavity becomes the nucleus of hydrogen blister. The blister will grow with enter-ing of vacancies and hydrogen atoms. With increasing hy-drogen pressure, plastic deformation occurs first, the hydro-gen blister near the surface extrudes, and then cracks initiate along the wall of the blister with further increasing hydrogen pressure. A cracked blister can grow further through propa-gating of cracks until it breaks. | REN Xuechong SHAN Guangbin CHU Wuyang SU Yanjing GAO Kewei QIAO Lijie JIANG Bo CHEN Gang CUI Yinhui | 2005 | Chinese Science Bulletin2005,50,17: | 2 |