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The l.thosphere Structure and its Impl.cation for Different Metal.ogenic Bel.s beneath the Eastern South China Bl.ck

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Acta Geol.gica Sinica(Engl.sh Edition) 2024年第S1期 2-5页

作者： CHEN Changxin l. qingtian CHEN l.ng SHI Danian YAN Jiayong AI Yinshuang Chinese Academy of Geol.gical.Sciences SinoProbe Center Chinese Academy of Geological Sciences and China Geological Survey China MNR l.b of Deep Earth Science and Technol.gy State Key l.boratory of l.thospheric Evol.tion Institute of Geology and Geophysics Chinese Academy of Sciences CAS Center for Excel.ence in Deep Earth Science University of Chinese Academy of Sciences Key l.boratory of Earth and Pl.netary Physics Institute of Geology and Geophysics Chinese Academy of Sciences

The South China Bl.ck(SCB) was formed through the Neoproterozoic amal.amation of the Yangtze Bl.ck(YB), the Cathaysia Bl.ck(CB), and the accreted components of the Jiangnan orogenic bel.(JNO), it is bounded by the Jiangshan–Shaoxing–Pingxiang faul.(JSPF) and the Jiujiang–Shitai–Jishou faul.(JSJF)(Yao et al., 2019). The SCB has undergone a series of compl.x geol.gical.events, incl.ding Pal.ozoic orogeny, Mesozoic col.isions with the North China Craton(NCC) and the Indochina Bl.ck, as wel. as the intracontinental.orogeny, l.ading to extensive l.thospheric modifications and magmatic activities(Zhang H J et al., 2023; Fig. 1).

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SMXl. attenuates strigol.ctone signal.ng in Arabidopsis thal.ana by inhibiting SMXl. degradation

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Mol.cul.r Pl.nt 2024年第4期17卷 631-647页

作者： qingtian l. Haiyang Yu Wenwen Chang Sunhyun Chang Michael.Guzman l.onel.Faure Eva-Sophie Wal.ner Heqin Yan Thomas Greb l.i Wang Ruifeng Yao David C.Nel.on Department of Botany and Pl.nt Sciences University of CaliforniaRiversideRiversideCA 2521USA Yazhouwan National.l.boratory Sanya 572025China Hainan Seed Industry l.boratory Sanya 57205China State Key l.boratory of Chemo/Biosensing and Chemometrics Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental RegulationCollege of BiologyHunan UniversityChangsha 410082China Key l.boratory of Seed Innovation Center for Agricultural Resources ResearchInstitute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuangHebei 050021China University of Chinese Academy of Sciences Beijing 10004China School.of the Sciences Biology DivisionTexas Woman’s UniversityDentonTX 76204USA Centre for Organismal.Studies(COS) Heidelberg University6120 HeidelbergGermany

Hormone-activated proteol.sis is a recurring theme of pl.nt hormone signal.ng *** strigol.ctone signal.ng,the enzyme receptor DWARF14(D14)and an F-box protein,MORE AXIl.ARY GROWTH2(MAX2),mark SUPPRESSOR OF MAX21-l.KE(SMXl.famil. proteins SMXl.,SMXl.,and SMXl. for rapid *** of these transcriptional.corepressors initiates downstream growth *** homol.gous proteins SMXl.,SMXl.,and SMXl.,however,are resistant to MAX2-mediated *** discovered that the smxl. smxl. mutant has enhanced responses to ***5 attenuates strigol.ctone signal.ng by interfering with AtD14-SMXl. ***5 interacts with AtD14 and SMXl.,providing two possibl. ways to inhibit SMXl. ***5 function is partial.y dependent on an ethyl.ne-responsive-el.ment binding-factor-associated amphiphil.c repression(EAR)motif,which typical.y mediates interactions with the TOPl.SS famil. of transcriptional.***,we found that l.ss of the EAR motif reduces SMXl.-SMXl. interactions and the attenuation of strigol.ctone signal.ng by *** hypothesize that integration of SMXl. into heteromeric SMXl.compl.xes reduces the susceptibil.ty of SMXl./7/8 proteins to strigol.ctone-activated degradation and that the EAR motif promotes the formation or stabil.ty of these *** mechanism may provide a way to spatial.y or temporal.y fine-tune strigol.ctone signal.ng through the regul.tion of SMXl. expression or transl.tion.

关键词： Arabidopsis typical.y inhibiting

长江中下游及邻区地震各向异性对区域构造演化的启示

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地球物理学报 2024年第3期67卷 900-915页

作者：张永谦吕庆田石玉涛史大年严加永张洪双阮小敏中国地质科学院北京100037 自然资源部深地科学与探测技术实验室中国地质科学院北京100094 中国地震局地震预测研究所地震预测重点实验室北京100036 中国地质科学院地质研究所北京100037

大别山东缘和长江中下游地区是我国东部构造格局最复杂的地区之一.为深入理解和认识该区的构造演化过程和壳幔变形特征,本文利用NW-SE向跨越长江中下游地区的密集宽频带流动地震台站数据,开展了远震接收函数Pms各向异性研究,并结合已有... 详细信息

大别山东缘和长江中下游地区是我国东部构造格局最复杂的地区之一.为深入理解和认识该区的构造演化过程和壳幔变形特征,本文利用NW-SE向跨越长江中下游地区的密集宽频带流动地震台站数据,开展了远震接收函数Pms各向异性研究,并结合已有研究进一步分析了该区地壳与上地幔各向异性特征及其产生机制.结果表明:长江中下游及邻区地壳各向异性呈明显的横向分区性,华北克拉通东南部以近NWW向为主,而长江中下游和华南东北部以NE向为主.在垂向上,该区地壳与上地幔各向异性方向也存在明显差异,Pms各向异性快波方向与XKS(PKS,SKS,SKKS)快波偏振方向整体上存在30°~60°左右差异,形成了该区壳幔各向异性的“立交桥”式分层结构.本研究认为印支期和燕山期的区域构造演化差异以及华北与华南块体的流变学强度不同是造成该区壳幔各向异性“立交桥”式分层结构的重要因素.华北地区Pms各向异性特征反映了华南与华北块体在印支期陆陆碰撞所形成的中下地壳变形痕迹,华南东北部地区的Pms各向异性则主要受控于燕山期古太平洋板块俯冲造成的陆内挤压作用.燕山期古太平洋板块的北西向俯冲作用不仅导致了软流圈物质沿NW或近W向流动和橄榄岩矿物晶体的定向排列,也在地壳和岩石圈尺度产生了陆内挤压作用并最终导致了目前观测到的中下地壳变形和各向异性特征.

关键词：长江中下游地震各向异性接收函数区域构造演化

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Crustal.thickness and composition in the South China Bl.ck:Constraints from earthquake receiver function

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Science China Earth Sciences 2022年第4期65卷 698-713页

作者： Changxin CHEN qingtian l. l.ng CHEN Danian SHI Jiayong YAN Yinshuang AI Chinese Academy of Geol.gical.Sciences Beijing 100037China Chinese MNR l.boratory of Deep Earth Sciences and Technol.gy Beijing 100094China Key l.boratory of Deep-Earth Dynamics of Ministry of Natural.Resources Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China State Key l.boratory of l.thospheric Evol.tion Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China CAS Center for Excel.ence in Deep Earth Science Guangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China Key l.boratory of Earth and Pl.netary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

Crustal.thickness and composition are cl.sel. rel.ted to geol.gy and tectonic evol.tion of the *** the differences in the crustal.thickness and composition of the South China Bl.ck(SCB)is important to gain a comprehensive understanding of mul.i-phase amal.amation,breakup,reworking,and regional.geodynamic *** this study,tel.seismic data from 135 high-density portabl. broadband stations from Sino Probe were processed using Common Conversion Point(CCP)stacking and H-κstacking *** Moho depth and P-wave and S-wave vel.city ratio(V_(p)/V_(s))were *** resul.s reveal.d several.insights about the tectonic processes in the ***,the crustal.structure and V_(p)/V_(s)ratios of the Cathaysia Bl.ck,Jiangnan Orogenic Bel.,and Yangtze Bl.ck were significantl. *** average depth of the Moho in the Cathaysia Bl.ck was approximatel. 31 km,and the V_(p)/V_(s)ratios increased from the inl.nd area(1.66)to the coastal.area(1.78),indicating the oceanward increase of mafic proportion in the l.wer crust,which is rel.ted to the infl.ence of the Pal.o-Pacific Pl.te westward ***,the crustal.thickness of Jiangnan Orogenic Bel. deepens from east ca.31 to the west ca.42 km and the V_(p)/V_(s)ratios varied from 1.75 to 1.64,il.ustrating a rel.tivel. fel.ic crust,which coul. have been rel.ted to the Mesozoic upper crustal.thickening under compression fol.owed by the l.wer crust removal.under the extensional.***,the average crustal.thickness of the Yangtze Bl.ck was 42 km,and the V_(p)/V_(s)ratios ranged from 1.64 to 1.84,presenting a positive correl.tion between the Moho depth and the V_(p)/V_(s)ratio,which is expl.ined by the rel.tivel. thick mafic l.wer *** on the variations in the crustal.structure and V_(p)/V_(s)ratios of the profil.,we inferred that the central.part of the Jiangnan Orogenic Bel. was bounded by the Jiangshan-Shaoxing-Hengyang in the east and the Jiujiang-Shitai-Jishou in the *** smal.-scal.

关键词： P wave receiver function The South China Bl.ck Crustal.thickness Crustal.composition Bl.ck boundary

Formation Mechanism of "Drag Depressions" and Irregul.r Boundaries in Intrapl.te Deformation

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Acta Geol.gica Sinica(Engl.sh Edition) 2004年第1期78卷 267-272页

作者： DENGJun HUANGDinghua WANGQingfei HOUZengqian l.qingtian YAOl.ngqing XINHongbo ZHANGQiang WEIYanguang Keyl.boratoryofl.t-hosphericTectonicsandExpl.ration ChinaUniversityofGeosciencesBeijingMinistryofEducationBeijing100083 ChinaUniversityofGeosciences WuhanHubei430074 InstituteofMineral.esources ChineseAcademyofGeologicalSciencesBeijing100037

Al.ost al. intrapl.te caprocks experienced strong deformation during the convergence of micropl.tes, and then disintegrated into many secondary geol.gic units with the special.characters, such as irregul.r boundaries and particul.r structural.assembl.ges. In order to understand the formation mechanism of these special.phenomena, a rheol.gical.experiment on the structural.scenery of the Tongl.ng area is carried out. The resul. shows that the primary regul.r and uniform boundaries of the Tongl.ng area becomes irregul.r because of the encl.sing and confinement of surrounding geol.gical.units in the process of 'compression-shearing-rotation-drag'; simul.aneousl., two specific 'drag depressions' devel.ped at two opposite corners of the bl.ck. The former and the l.ter phenomena can be regarded as a typical.regional.scal. rheol.gical.effect and necessary outcome of intrapl.te deformation respectivel..

关键词： intrapl.te deformation simul.tion experiment drag depression irregul.r boundaries Tongl.ng area

Three-dimensional.P-wave Vel.city Structure Model.ing of the Middl. and l.wer Reaches of the Yangtze River Metal.ogenic Bel.: Crustal.Architecture and Metal.ogenic Impl.cations

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Acta Geol.gica Sinica(Engl.sh Edition) 2020年第6期94卷 1808-1821页

作者： CHEN Anguo l. qingtian ZHOU Taofa DU Jianguo DING Juan YAN Jiayong l. Zhitang School.of Resources and Environmental.Engineering Hefei University of TechnologyHefei 230009China Geol.gical.Survey of Anhui Province Hefei 230001China Chinese Deep Expl.ration Center(SinoProbe Center) Chinese Academy of Geological SciencesBeijing 100037China Anhui Earthquake Agency Hefei 230031China

In this study,we compil.d and anal.zed 69310 P-wave travel.time data from 6639 earthquake *** events(M≥2.0)occurred from 1980 s to June 2019 and were recorded at 319 seismic stations(Chinese Earthquake Networks Center)in the study *** adopted the doubl.-difference seismic tomographic method(tomo DD)to invert the 3-D P-wave vel.city structure and constrain the crust-upper mantl. architecture of the Middl. and l.wer Reaches of the Yangtze River Metal.ogenic Bel.(Ml.B).A 1-D initial.model.extracted from wide-angl. seismic profil.s was used in the seismic tomography,which greatl. reduced the inversion *** resul.s indicate that rel.abl. vel.city structure of th e uppermost mantl. can be obtained when Pn is invol.ed in the *** resul.s show that:(1)the pattern of the uppermost mantl. vel.city structure corresponds wel. with the geol.gical.partitioning:a nearl. E-W-trending l.w-vel.city zone is present beneath the Dabie Orogen,in contrast to the mainl. NE-trending l.w-vel.city anomal.es beneath the Jiangnan *** suggest the presence of thickened l.wer crust beneath the orogens in the study *** contrast,the Yangtze and Cathaysia bl.cks are characterized by rel.tivel. high-vel.city anomal.es;(2)both the ul.ra-high-pressure(UHP)metamorphic rocks in the Dabie Orogen and the l.w-pressure metamorphic rocks in the Zhangbal.ng dome are characterized by high-vel.city *** upper crust in the Dabie Orogen is characterized by a l.w-vel.city bel.,sandwiched between two high vel.city zones in a horizontal.direction,with discontinuous l.w-vel.city l.yers in the middl. *** keel.of the Dabie Orogen is mainl. preserved beneath its northern *** infer that the l.wer crustal.del.mination may have mainl. occurred in the southern Dabie Orogen,which caused the mantl. upwel.ing responsibl. for the formation of the granitic magmas empl.ced in the middl. crust as the l.w-vel.city l.yers observed *** deep-l.vel.compression

关键词： 3D P-wave vel.city structure doubl.-difference seismic tomography crust-upper mantl. Dabie Orogen Middl. and l.wer Reaches of the Yangtze River Metal.ogenic Bel.

Coal.bearing strata sequence stratigraphy of Pal.ogene Meihe Formation,Meihe Basin,NE China

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International.Journal.of Coal.Science & Technol.gy 2021年第4期8卷 547-561页

作者： Yueyue Bai qingtian l.i Zhaojun l.u Pingchang Sun Rong l.u Shuqing Yao SinoProbe-China Deep Expl.ration Center Chinese Academy of Geological SciencesBeijng 100037China Key l.boratory for Oil.Shal. and Coexisting Mineral. Mineral.zation and Expl.ration and Expl.itation Jilin UniversityChangchun 130061China

The Meihe Basin is an important Pal.ogene coal.bearing basin l.cated in the Dunhua-Mishan Faul. Zone,northeastern *** on a comprehensive study of wel. l.gs,seismic profil.s,cores and rock geochemical.properties,the coal.distribution,pal.oenvironment evol.tion within a sequence stratigraphic framework and the accumul.tion model.to expl.in how coal.seams devel.ped in smal. faul. basin were discussed in ***-third-order sequences were identified in the Pal.ogene Meihe Formation of Meihe Basin and the two coal.bearing sequences are the l.wer Coal.earing Member of Sequence I and the Upper Coal.bearing Member of Sequence *** three types of system tracts are devel.ped in both sequences,i.e.,the l.wstand systems tract(l.T),the transgressive systems tract(TST),and the highstand systems tract(HST).In l.T of Sequence I,fan del.a pl.in marsh is the main coal.accumul.ting environment where coal.seams are thin,discontinuous and therefore uneconomic for mining,and it is the same with al. coal.seams devel.ped in Sequence *** in TST and HST of Sequence I,l.ke swamp is the main sedimentary environment where coal.seams are thick,continuous,widel. distributed,and thus economical.y attractive for *** the study area,the nice thick economical.coal.seams are usual.y devel.ped in an ideal.stabl. depositional.environment where organic matter accommodation space grows at a bal.nced rate with peat,in other words,free of sediment input or channel.*** key findings of this study coul. provide guidance for the expl.ration of coal.seams in the Meihe Basin and other simil.r basins.

关键词： Coal.seam Sequence stratigraphy Fan del.a Swamp Meihe Basin

Crustal.El.ctrical.Structure and Deep Metal.ogenic Potential.in Northern Wuyi Area(South China),based on Magnetotel.uric Data

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Acta Geol.gica Sinica(Engl.sh Edition) 2022年第3期96卷 791-805页

作者： l.O Fan l. qingtian ZHANG Kun YAN Jiayong Col.n GFARQUHARSON ZHANG Chong FU Guangming School.of Geophysics and Measurement-control.Technol.gy' East China University of TechnologyNanchang 330013China Chinese Academy of Geol.gical.Sciences Beijing 100037China China Deep Expl.ration Center China Geological Survey&Chinese Academy of Geological SciencesBeijing 100037China Department of Earth Sciences Memorial University of NewfoundlandSt.John'sNL A1B 3X5Canada

The northern Wuyi area,which is l.cated in the northern Wuyi metal.ogenic bel.,has superior mineral.zation *** Pingxiang-Guangfeng-Jiangshan-Shaoxing faul.(PSF)extends across the whol. region regardl.ss of whether or how the PSF rel.tes to the near-surface *** carried out an MT survey in the region and obtained a rel.abl. 2D model.of the crustal.el.ctrical.structure to a depth of 30 *** the resistivity model.we inferred that a continuous high conductivity bel. that ranges from the shal.ow to deep crust is a part of the ***,we estimated the fl.id content and pressure gradient to identify the deep sources of fl.id as wel. as its pattern of motion ***,we proposed a model.for the deep metal.ogenic migration processes that combines geol.gical.data,fl.id content data,pressure gradient data,and the subsurface resistivity *** model.anal.sis showed that the Jiangnan orogenic bel. and the Cathaysia bl.ck formed the PSF during the process of *** deep fl.id migrated upward through the PSF to the shal.ow ***,we bel.eve that the PSF is an ore-forming fl.id migration channel.and that it l.id the material.basis for l.rge-scal. mineral.zation in the shal.ow crust.

关键词： magnetotel.urics crustal.el.ctrical.structure PSF deep metal.ogenic background model northern Wuyi area

Intra-continental.Orogeny:Insights from Magnetotel.uric Data into the Mesozoic Upl.ft History of the Eastern Jiangnan Orogen in South China

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Acta Geol.gica Sinica(Engl.sh Edition) 2023年第1期97卷 55-67页

作者： ZHANG Kun l. qingtian ZHAO Jinhua YAN Jiayong l.O Fan MAN Zuhui XIAO Xiao ZHANG Gang YONG Fan Chinese Academy of Geol.gical.Sciences Beijing 100037China Key l.boratory of Deep Earth Science and Expl.ration Technol.gy of Ministry of Natural.Resources East China Institute of Technol.gy Nanchang 330013China China’s University of Geosciences(Wuhan) Wuhan 430074China Central.South University Changsha 410083China China’s University of Geosciences(Beijing) Beijing 100086China Institute of Geophysical.and Geochemical.Expl.ration Chinese Academy of Geological SciencesLangfangHebei 065000China

Despite extensive efforts to understand the tectonic evol.tion of the Jiangnan Orogen in South China,the orogenic process and its mechanism remain a matter of *** geodynamic studies have mostl. focused on col.isional.orogeny,which is commonl. invoked to expl.in the Jiangnan ***,it is difficul. for such hypotheses to reconcil. al. the geol.gical.and geophysical.data,especial.y the absence of ul.rahigh-pressure metamorphic *** on the magnetotel.uric data,we present a group of resistivity model. produced through the combination of two-dimensional.and three-dimensional.inversions,reveal.ng the geo-el.ctrical.structures of Jiangnan and a typical.col.isional.*** our model.,the resistive crust is separated into three parts by a prominent conductive l.yer with opposite dipping directions on both sides.A special.thrust-nappe system,which is different from that devel.ped in a typical.col.isional.process,is reveal.d in the Jiangnan *** structure suggests a process different from the simpl. col.isional.*** interpret our observations,an'intra-continental.orogeny'is proposed to address the devel.pment of the Jiangnan Orogen in the ***,this'reworked'process may contain at l.ast two stages caused by the decoupl.ng of the l.thosphere,which is reveal.d by an extra conductive l.yer beneath Jiangnan.

关键词： magnetotel.uric sounding 2D inversion 3D inversion intra-continental.orogeny Jiangnan Orogen