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First seismic evidence for continental subduction beneath the Western Alps

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First seismic evidence for continental subduction beneath th...

大陆俯冲界面之上大规模硅富集流体的地球物理学证据

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： Liang Zhao Anne Paul stéphane guillot stefano Solarino Marco G. Malusà Tianyu Zheng Coralie Aubert Simone Salimbeni Thierry Dumont stéphane Schwartz Rixiang Zhu Qingchen Wang state Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Université Grenoble Alpes Institut des Sciences de la Terre (ISTerre) CNRS Institut des Sciences de la Terre (ISTerre)

The first discovery of ultrahigh-pressure coesite in the European Alps 30 years ago led to the inference that a positively buoyant continental crust can be subducted to mantle depth;this had been considered impossible since the advent of the plate tectonics concepts. Although continental subduction is now widely accepted, there remains debate because there is little direct(geophysical) evidence of a link between exhumed coesite at the surface and subducted continental crust at depth. Here we provide the first seismic evidence for continental crust at 75 km depth that is clearly connected with the European crust exactly along the transect where coesite was found at the surface. Our data also provide evidence for a thick suture zone with downward-decreasing seismic velocities, demonstrating that the European lower crust underthrusts the Adriatic mantle. These findings, from one of the best-preserved and long-studied ultrahigh-pressure orogens worldwide, shed decisive new light on geodynamic processes along convergent continental margins.

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中国科学：地球科学 2024年第9期54卷 2848-2863页

作者：毛元彤赵亮 Marco G.MALUSÀ stefano SOLARINO Silvia PONDRELLI 孙宝璐 Coralie AUBERT Simone SALIMBENI Elena EVA stéphane guillot 中国科学院地质与地球物理研究所岩石圈演化与环境演变全国重点实验室北京100029 中国科学院大学地球与行星科学学院北京100049 Department of Earth and Environmental Sciences University of Milano-BicoccaMilan 20126Italy Istituto Nazionale di Geofisica e Vulcanologia Osservatorio Nazionale TerremotiGenova 16145Italy Istituto Nazionale di Geofisica e Vulcanologia Sezione di BolognaBologna 40127Italy UniversitéGrenoble Alpes UniversitéSavoie Mont BlancCNRSIRDUGEISTerreGrenoble 38000France

俯冲带中的流体可能对俯冲过程产生重要影响.然而,关于大陆俯冲期间流体规模及其作用的地球物理约束仍然有限.西阿尔卑斯造山带是全球保存最完好的大陆俯冲带之一,为认识大陆俯冲过程中流体作用的影响提供了重要的参考.本文综合多种地... 详细信息

俯冲带中的流体可能对俯冲过程产生重要影响.然而,关于大陆俯冲期间流体规模及其作用的地球物理约束仍然有限.西阿尔卑斯造山带是全球保存最完好的大陆俯冲带之一,为认识大陆俯冲过程中流体作用的影响提供了重要的参考.本文综合多种地球物理方法分析了西阿尔卑斯造山带地区的V_(P)/V_(S)比值,发现在俯冲区的上盘侧存在高V_(P)/V_(S)(>1.9)带,与部分蛇纹岩化的上覆地幔楔位置一致;而在下盘侧存在异常低的V_(P)/V_(S)(<1.7)带,异常深度浅于30km.本文认为,观测到的低V_(P)/V_(S)比值异常是由地壳内广泛分布的富硅岩脉导致,指示了在俯冲时期大陆俯冲界面之上可能存在的富硅流体流动.本文的结果暗示俯冲时期的流体流动可能降低了俯冲界面的有效应力,从而促进了大陆俯冲.

关键词：西阿尔卑斯造山带地壳精细结构接收函数 V_(P)/V_(S)波速比硅富集

The CIFALPS seismic experiment: first high-resolution data on the crust and upper mantle structures of the western Alps

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The CIFALPS seismic experiment: first high-resolution data o...

SERPENTINIZATION OF THE MANTLE WEDGE BY FLUIDS DERIVED FROM CONTINENTAL CRUstAL MATERIAL: EVIDENCE FROM Nd ISOTOPIC SIGNATURES OF SERPENTINITES (TSO MORARI DOME,ELADAKH)

2014年中国地球科学联合学术年会——专题9：深部地幔物质成分与结构探测

作者： Liang Zhao Anne Paul stefano Solarino Tianyu Zheng Coralie Aubert Simone Salimbeni stéphane guillot Rixiang Zhu Qingchen Wang CIFALPS team state Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Institut des Sciences de la Terre (Isterre) CNRS Université Joseph FourierGrenoble France

One classical model of continent-continent collisions is characterized by a series of continental subduction,high-pressure(HP)to ultra high-pressure(UHP)metamorphism of rocks and traveling back of HP(UHP)units to the *** plate subduction was proposed to can be subducted to a depth>100 km based upon the discoveries of UHP rocks in many continental-continental *** best-known and one of the youngest example is the Alpine orogeny,which may have formed by the Europe-Adria continental collision in the *** a Cenozoic orogeny,its structural and metamorphic features well recorded the subduction and exhumation process of orogeny as demonstrated by the surface geological investigations.

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地学前缘 2000年第S1期7卷 122-123页

作者： Julia de Sigoyer 1, Thomas Ngler\+2, stéphane guillot\+3, Kéi ko H. Hattori\+4[WT5,5”BX](1 Institut de Géologie, CH\|2007 Neuchtel, Switzerland 2 Isotopengeologie, Universitt Bern, Erlachstrasse 9a, 3012 Bern, Switzerland 3 CNRS, Universi

The well preserved eclogitic rocks of the Tso Morari dome in eastern Ladakh, northwest Himalaya, provide information relevant to the exhumation of high pressure/low temperature rocks, and the early stage of the Himalayan orogeny. The Tso Morari unit outcrops south of the Indus suture zone (Fig.1). The eclogitic dome is underlined on its eastern part by the Zildat normal fault where serpentinite lenses and partially hydrated peridotites are abundant. The close association of the high pressure rocks and serpentinites suggests a possible role of serpentinites in the exhumation of ultrahigh\|pressure rocks. To evaluate this possibility, geochemical analyses were carried out on the serpentinites closely associated with the Tso Morari eclogites.

关键词： exhumation of eclogitic rocks serpentinites REE Nd\|isot opes crustal fluid contamination mantle wedge Eastern Ladakh Himalaya

Genesis of Daba arcuate structural belt related to adjacent basement upheavals:Constraints from Fission-track and (U-Th)/He thermochronology

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Science China Earth Sciences 2010年第11期53卷 1634-1646页

作者： guillot Franois Lab.FRE 3298 CNRS (Géosystèmes) Université Lille Nord de France

Fission-track, (U-Th)/He thermochronology, and cooling properties indicate that the southern Daba arcuate zone (SDBAZ) underwent a distinctive phase of rapid cooling in 153-100 Ma at a rate of 1.44-1.90°C/Ma. This rapid uplifting strongly contrasts with (1) the previous, rapid foreland subsidence during Early to Middle Jurassic in response to late-orogenic compression from the Qinling belt, (2) the succeeding long, slow cooling phase and relative thermal stability that occurred during the 100-45 Ma period. This rapid cooling event in the SDBAZ parallels those experienced by two adjacent upheavals of Huangling (HLUZ) and Hannan-Micang (HMUZ), with cooling rates of 2.22-3.17°C/Ma for the HLUZ in 160-126 Ma, 4.91°C/Ma for the southern HMUZ in 150-125 Ma, as well as 2.11°C/Ma for the northern HMUZ in 150-105 Ma. Comparing thermal histories among the SDBAZ, the HLUZ, the HMUZ, and the Wudang metamorphic zone (WDMZ), we infer that the Daba arcuate structural belt formed in 153-100 Ma. The combined dating data support a correlation with a low-angle arcuate south-thrusting of the Qinling orogen triggered by northward convergence of the Yangtze Craton, contemporaneously encountering rigid basement obstructions from the HLUZ and the HMUZ, respectively. Both the SDBAZ and neighboring domains additionally underwent a comparatively fast cooling and uplift since about 45 Ma.

关键词： Fission-track (U-Th)/He Daba arcuate belt basement upheavals correlation

Somatic mutant clone screening: scan for novel NASH target genes in mouse liver

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Signal Transduction and Targeted Therapy 2023年第9期8卷 3902-3903页

作者： Tian Lan Adrien guillot Frank Tacke Lab of Gastroenterology and Hepatology State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengduChina Department of Gastroenterology West China HospitalSichuan UniversityChengduChina Department of Hepatology&Gastroenterology Charité-Universitätsmedizin BerlinCampus Virchow-Klinikum and Campus CharitéMitteBerlinGermany

In a landmark study recently published in Cell,Wang et *** a novel method of somatic adeno-associated virus(AAV)-transposon in vivo clonal screening(termed MOSAICS),which is capable to generate multiple mutant hepatocyte clones within the same tissue and thereby to scan for non-alcoholic steatohepatitis(NASH)target genes(Fig.1).1 Non-alcoholic fatty liver disease(NAFLD)is the most common liver disease affecting about 20–30%of the global population and associated with metabolic *** can progress to NASH,characterized by liver inflammation,steatosis and hepato-cyte ballooning,and NAFLD/NASH can lead to fibrosis,cirrhosis,and ultimately liver *** decades,researchers have been seeking to understand its pathogenesis and to discover ther-apeutic strategies to treat NAFLD/***,up to now,there is still no specific pharmacotherapy available.

关键词： balloon NAFLD inflammation

Next-Generation Imaging: New Insights from Multicolor Microscopy in Liver Biology and Disease

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Engineering 2022年第2期8卷 17-21页

作者： Felix Heymann Adrien guillot Moritz Peiseler Frank Tacke Department of Hepatology and Gastroenterology Charité–Universitätsmedizin BerlinBerlin 13353Germany

*** Our current understanding of the complex biology of solid organs,such as the liver,has been tremendously advanced by a wide variety of methodological approaches based on cell biology,biochemistry,molecular biology,and *** methods such as the morphological assessment of tissue structure by histology and immunohistochemistry have generated valuable knowledge and revealed improved treatment options for various liver ***,due to recent technological advances,it has been possible to gain deeper insights into physiological and pathological tissue organization,as well as dynamic processes taking place in *** novel methods include single-cell tar-geted transcriptome analysis,mass spectrometry-based metabolite and protein expression studies,and considerable advances in two-and three-dimensional(2D/3D)*** commentary will briefly review the recent progress that has been made in the field of imaging-based liver research,highlighting the novel possibilities of high-dimensional,multiparametric imaging in two and three dimensions,as well as those of dynamic time-lapse in vitro and in vivo imaging(Fig.1).We will also highlight some potential applications of these techniques for specific research questions in liver biology and disease.

关键词： organs dimensions advances

Transport network downsizing based on optimal sub-network

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Communications in Transportation Research 2022年第1期2卷 317-332页

作者： Matthieu guillot Angelo Furno El-Houssaine Aghezzaf Nour-Eddin El Faouzi Univ Gustave Eiffel Univ LyonENTPELICITF-69518LyonFrance Department of Industrial Systems Engineering and Product Design Faculty of Engineering and ArchitectureGhent UniversityGhentBelgium Industrial Systems Engineering(ISyE) Flanders MakeLommelBelgium

Transportation networks are sized to efficiently achieve some set of service *** particular circumstances,such as the COVID-19 pandemic,the demand for transportation can significantly change,both qualitatively and quantitatively,resulting in an over-capacitated and less efficient *** this paper,we address this issue by proposing a framework for resizing the network to efficiently cope with the new *** framework includes a model to determine an optimal transportation sub-network that guarantees the following:(i)the minimal access time from any node of the urban network to the new sub-network has not excessively increased compared to that of the original transportation network;(ii)the delay induced on any itinerary by the removal of nodes from the original transportation network has not excessively increased;and(iii)the number of removed nodes from the transportation network is within a preset known factor.A solution is optimal if it induces a minimal global *** modelled this problem as a Mixed Integer Linear Program and applied it to the public bus transportation network of Lyon,France,in a case *** order to respond to operational issues,the framework also includes a decision tool that helps the network planners to decide which bus lines to close and which ones to leave open according to specific trade-off *** results on real data in Lyon show that the optimal sub-network from the MILP model can be used to feed the decision tool,leading to operational scenarios for network planners.

关键词： Public transportation network Linear programming Decision tool Downsizing networks Case study

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醋酸乙烯酯-丙烯酸丁酯乳液聚合成核机理

高分子学报 1992年第1期2卷 68-73页

作者：孔祥正 guillot Jean 山东大学应用化学系 Laboratoire des Materiaux Organiques Centre National de Recherche Scientifique69390VernaisonFrance

本工作研究了醋酸乙烯酯(VA)和丙烯酸丁酯(BA)乳液共聚合.通过对不同共聚单体配比下共聚合时胶乳粒径及胶粒数密度随转化率变化的分析,对VA/BA乳液共聚合成核及粒增长机理进行了探讨,指出水相成核是高VA含量时胶粒数密度较大的主要原因... 详细信息

本工作研究了醋酸乙烯酯(VA)和丙烯酸丁酯(BA)乳液共聚合.通过对不同共聚单体配比下共聚合时胶乳粒径及胶粒数密度随转化率变化的分析,对VA/BA乳液共聚合成核及粒增长机理进行了探讨,指出水相成核是高VA含量时胶粒数密度较大的主要原因并解释了胶粒数密度及胶乳粒径与单体转化率的关系,同时也讨论了该共聚体系一步法聚合时反应机理与胶粒形态的关系.

关键词：醋酸乙烯酯丙烯酸丁酯乳液聚合