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Contrasted continental rifting via plume-craton interaction： Applications to Central East African Rift

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Geoscience Frontiers 2016年第2期7卷 221-236页

作者： Alexander Koptev Evgueni burov Eric Calais Sylvie Leroy Taras Gerya Laurent Guillou-Frottier Sierd Cloetingh Sorbonne Universites UPMC Univ Paris 06 CNRS Institut des Sciences de la Terre de Paris (iSTeP) 4 place Jussieu 75005 Paris France Ecole Normale Superieure Department of Geosciences PSL Research University CNRS UMR 8538 Paris France ETH-Zurich Institute of Geophysics Sonnegstrasse 5 Zurich Switzerland BRGM Georesources Division Orleans France Utrecht University Netherlands

The East African Rift system （EARS） provides a unique system with the juxtaposition of two contrasting yet simultaneously formed rift branches, the eastern, magma-rich, and the western, magma-poor, on either sides of the old thick Tanzanian craton embedded in a younger lithosphere. Data on the pre-rifr, syn-rift and post-rift far-field volcanic and tectonic activity show that the EARS formed in the context of the interaction between a deep mantle plume and a horizontally and vertically heterogeneous lithosphere under far-field tectonic extension. We bring quantitative insights into this evolution by implementing high-resolution 3D thermo-mechanical numerical deformation models of a lithosphere of realistic rheology. The models focus on the central part of the EARS. We explore scenarios of plumelithosphere interaction with plumes of various size and initial position rising beneath a tectonically pre-stretched lithosphere. We test the impact of the inherited rheological discontinuities （suture zones） along the craton borders, of the rheological structure, of lithosphere plate thickness variations, and of physical and mechanical contrasts between the craton and the embedding lithosphere. Our experiments indicate that the ascending plume material is deflected by the cratonic keel and preferentially channeled along one of its sides, leading to the formation of a large rift zone along the eastern side of the craton, with significant magmatic activity and substantial melt amount derived from the mantle plume material. We show that the observed asymmetry of the central EARS, with coeval amagmatic （western） and magmatic （eastern） branches, can be explained by the splitting of warm material rising from a broad plume head whose initial position is slightly shifted to the eastern side of the craton. In that case, neither a mechanical weakness of the contact between the craton and the embedding lithosphere nor the presence of second plume are required to produce simulations that

关键词： Plume-lithosphere interaction Continental rifting East African Rift System 3D numerical modeling

Novel technique for characterizing feature profiles in photolithography process

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Chinese Optics Letters 2012年第6期10卷 37-40页

作者：王帆陆海亮张青云 Anatoly burov Shanghai Micro Electronics Equipment Co. Ltd

A novel angle-resolved scatterometer based on pupil optimization for feature profile measurement in a photolithography process is *** impact of image sensor errors is minimized by optimizing the intensity distribution of the incident light using a spatial light *** scatterometry sensitivity of feature measurement at different polarization conditions is calculated using the rigorous coupled-wave and first-order analyses,and the reproducibility of the scatterometer is *** results show that the sensitivity and reproducibility of the angle-resolved scatterometer increase by 90% and 40% with pupil optimization,respectively.

关键词： Meteorological instruments Photolithography

Matrix Method for Determining Structural Reliability of the System and Significance of Its Elements in Terms of Reliability

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Open Journal of Applied Sciences 2015年第11期5卷 669-677页

作者： Victor Kravets Vladimir Kravets Olexiy burov Department of Automobiles and Transportation Facilities Automobile Sector National Mining University Dnipropetrovsk Ukraine Department of Labor Security Dnipropetrovsk National University of Railway Transport Named after Academician V. Lazaryan Dnipropetrovsk Ukraine Baskin School of Engineering University of California-Santa Cruz Santa Cruz USA

Matrix method is being proposed for qualitative evaluation of the reliability of technical systems on a finite set of structural elements. We are introducing the criteria for qualitative assessment of the reliability in the form of structural reliability of the system as the probability of the troubleproof state of this system and the significancy of the individual elements in ensuring the structural reliability of the system as a general aggregate of conditional probabilities, which compose two (2 × 2) matrices of significancy for each element. We are using chain diagrams for solving the combinatronic problems and matrices for algorithmization of calculating procedures.

关键词： Structural Reliability Matrices of Significance Matrix of States Chain Diagram

Flotation separation of wolframite from calcite using a new trisiloxane surfactant as collector

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International Journal of Mining Science and Technology 2023年第3期33卷 379-387页

作者： Shuyi Shuai Zhiqiang Huang Vladimir E.burov Vladimir Z.Poilov Fangxu Li Hongling Wang Rukuan Liu Shiyong Zhang Chen Cheng Wenyuan Li Xinyang Yu Guichun He Weng Fu Jiangxi Province Key Laboratory of Mining Engineering Jiangxi University of Science and TechnologyGanzhou 341000China Department of Chemical Engineering Perm National Research Polytechnic UniversityPerm 614990Russia Guangdong Institute of Resources Comprehensive Utilization Guangzhou 510650China Hunan Academy of Forestry Changsha 410004China School of Chemical Engineering University of QueenslandSt Lucia 4072 QLDAustralia

Since wolframite is usually associated with calcite,the separation and enrichment of wolframite by froth flotation remains a great ***,a novel trisiloxane surfactant N-(2-aminoethyl)-3-ami nopropyltrisiloxane(AATS)was successful synthesized,which was used for the separation of wolframite from calcite for the first *** flotation separation performance of AATS was studied by flotation test,and its adsorption mechanism was explored based on contact angle,infrared spectrum analysis(FTIR),zeta potential and density functional theory(DFT)*** results of microflotation test and binary mixed ore flotation test pointed that AATS had excellent selectivity and more prominent collection capacity for the flotation of wolframite when compared with industrial reagent sodium oleate(NaOL).The measurement results of contact angle proved that AATS improved the hydrophobicity of the wolframite *** highly selective adsorption mechanism of AATS surfactant on mineral surfaces were further researched and analyzed by FTIR and zeta *** results revealed that AATS surfactant had significant adsorption effect on wolframite,yet almost no adsorption on *** calculation indicated that AATS produced electrostatic adsorption with wolframite surface through—N+H3 group.

关键词： Flotation Wolframite Calcite Trisiloxane surfactant Adsorption

The Government Strategy towards Education in Modern Russia

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The Government Strategy towards Education in Modern Russia

Thermo-Mechanical modeling insight for the formation of metamorphic core complexes without pre-thickened crust: Application to Late Mesozoic continental extension in Eastern North China Craton

作者： V.G.burov Institute of Philosophy Russian Academy of Sciences

＜正＞Education in the broad sense of the word is not just the acquisition of knowledge in schools and universities, but it also presumes building certain moral qualities that allow a person to become a full-fledged member of society. Indeed, the family and various socio-political and religious organizations play an important role in this regard. The interaction of these social institutions provides society with intellectually and culturally educated citizens and is able to address large-scale modernization tasks.

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Thermo-Mechanical modeling insight for the formation of meta...

Catalytic Activity of Nanodiamonds in Azocoupling Reaction

2014年中国地球科学联合学术年会——专题9：深部地幔...

作者： Kun Wang Evgueni burov Charles Gumiaux Yan Chen Liang Zhao Key Laboratory of the Earth’sDeepInterior Institute of Geology and Geophysics ChineseAcademy of Sciences Sorbonne Universités UPMC Univ Paris 06 UMR 7193 Institut des Sciences de la Terre Paris (iSTeP) F-75005 Paris France CNRS UMR 7193 Institut des Sciences de la Terre Paris (iSTeP) F-75005 Paris France Institut des Sciences de la Terre d’Orléans (ISTO) Université d’Orléans- CNRS/INSU (UMR 7327) Campus GéosciencesOrléans France b State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences

＜正＞Previously thickened orogenic crust is often regarded as a crucial precondition for formation of metamorphic core complexes（MCCs）.Yet,the discovery of MCC in eastern North China Craton（NCC）,where the lithosphere has normal crustal thickness,challenges the applicability of this *** eastern NCC,no high pressure metamorphism has been reported before and during development of the MCCs,and no trace of any suture zone following the tendency of the extension zone has been *** syn-tectonic plutons and still mystic mechanisms of cratonic destruction make the tectonic setting of NCC quite ***,different multi-disciplinary researches have largely contributed to build a database on structural and lithological constrains,together with rheological and paleo-thermal state that provide an opportunity to extend the survey *** therefore implement 2-D numerical thermo-mechanical modeling

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Journal of Biomaterials and Nanobiotechnology 2014年第3期5卷 173-178页

作者： Nikita O. Ronzhin Alexey P. Puzyr Andrey E. burov Vladimir S. Bondar Institute of Biophysics SB RAS Krasnoyarsk Russia Special Design-Technology Bureau “Nauka” SB RAS Krasnoyarsk Russia

The catalytic efficiency of modified nanodiamonds (MND) in reactions of interaction between organic compounds was demonstrated on the example of azocoupling reaction (hydrogen peroxide-4-aminoantipyrine-phenol). It was found that catalytic action of MND was caused by redox active metal ions of Fe and Cu located on the MND surface. The neutralization of the ions significantly decreased catalytic properties of MND.

关键词： Diamond Nanoparticles Catalytic Activity Metal Ions Organic Reaction

Formation of metamorphic core complexes in non-over-thickened continental crust: A case study of Liaodong Peninsula(East Asia)

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Formation of metamorphic core complexes in non-over-thickene...

中国科学院地质与地球物理研究所2015年度（第15届）学术年会

作者： Kun Wang Evgueni burov Charles Gumiaux Yan Chen Gang Lu Leila Mezri Liang Zhao State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Sorbonne Universités UPMC Univ Paris 06 UMR 7193 Institut des Sciences de la Terre Paris (iSTeP) F-75005 Paris France CNRS UMR 7193 Institut des Sciences de la Terre Paris (iSTeP) F-75005 Paris France Université d'Orléans ISTO UMR 7327 45071 Orléans France CNRS/INSU ISTO UMR 7327 45071 Orléans France BRGM ISTO UMR 7327 BP 36009 45060 Orléans France

Pre-thickened hot orogenic crust is often considered a necessary condition for the formation of continental metamorphic core complexes(MCCs). However, the discovery of MCCs in the Liaodong Peninsula, where the crust has a normal thickness(～35 km), challenges the universality of this scenario. Therefore, we implement a series of 2-D numerical thermo-mechanical modeling experiments in which we investigate the conditions of MCC formation in normal crusts, as well as the relationships between the underlying mechanisms and the syn-rift basin evolution. In these experiments, we explore the impact of the lithostratigraphic and thermo-rheological structure of the crust. We also examine the lithosphere thickness, strain softening, extension rate, and surface erosion/sedimentation processes. The experiments demonstrate that high thermal gradients and crustal heterogeneities result only in a symmetric spreading dome, which is geometrically incompatible with the observations of the MCCs in the Liaodong Peninsula. According to our further findings, the strain softening should play a key role in the development of asymmetric strain localization and domal topography uplift, while synchronous surface erosion controls the polarity of the syn-rift basin. The synthetic model data are compatible with the geological observations and cooling history based on the thermo-chronology for the eastern part of the East Asia during the late Mesozoic to the early Cenozoic. The model-predicted P-T-t paths are essentially different from those inferred for the other known MCCs, confirming the exceptional character of the MCC formation in the wide rift system of the East Asia.

关键词： Metamorphic core complex Rheology Numerical modeling Thermal structure Liaodong Peninsula Syn-rift basin

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侵蚀是陆内山脉生长的驱动机制

世界地震译丛 1999年第2期30卷 20-34页

作者： J. P. Avouac E. B. burov 唐传海上海市地震局

自然中的山脉作为局部构造特征可以在很长的时间内(大于10Ma)生长并维持。可是,如果根据现今的岩石层流变学知识,忽略地表过程,任何陆内山脉,当其宽度超过可以由岩石层的强度所支持的程度时,将会在几十百万年内塌陷。例如,考虑由石英为... 详细信息

自然中的山脉作为局部构造特征可以在很长的时间内(大于10Ma)生长并维持。可是,如果根据现今的岩石层流变学知识,忽略地表过程,任何陆内山脉,当其宽度超过可以由岩石层的强度所支持的程度时,将会在几十百万年内塌陷。例如,考虑由石英为主体的地壳流变性,使其地壳根侧向扩展的结果,一条初始地形起伏为3km高、300～400km宽的山脉在大约15Ma内将被消减一半。我们认为地表过程事实上能够阻止这种“地下塌陷”。物质在高地形处的运移和在前沿处的沉积阻止了地壳根的扩展,能够最终驱动物质向造山脉带的净流入。我们进行了一套数值实验以证实这一假设。一个具有脆性-弹性-塑性流变性、并有初始的山脉载荷的岩石层截面受到水平缩短和地表过程的作用。如果侵蚀较强,物质的迁移将比山脉下的地壳增厚的补充进行得更快,地形被迅速地光滑掉。例如,当侵蚀系数k=10~3m^2/a(侵蚀率的量级为每年零点几个毫米)时,一个3km高、300～400km宽的山脉形态在大约15Ma内其高度将减半。这种情形可以称为“侵蚀塌陷”。如果侵蚀不足够活跃,地壳根将侧向扩展出而发生“地下塌陷”。在处于两者中间的第三种情形中,侵蚀造成的物质运移被均衡回跳和下地壳中的向内流动动态地补偿,因而山脉可以生长。在这种“山脉生长”情形中,山脉向一个特征性的均衡形状演化,后者主要依赖于侵蚀规律。侵蚀率可以较高(如0.5～0.9mm/a),接近于构造抬升率(如0.7～1.1mm/a),而几倍于地形抬升率(如0.15～0.2mm/a)。这些实验表明地表过程有利于局部地壳缩短并参与陆内山脉生长,因此对大陆岩石层长期变形的解释和模拟必须考虑地表过程的作用。相反地,当从地貌学过程方面对大尺度的地形特征进行解释和模拟时,则必须考虑岩石层的力学响应。

关键词：侵蚀陆内山脉生长驱动机制地震地质