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河北兴隆中元古代硫化物黑烟囱群发现及其地质成因

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自然科学进展 2005年第2期15卷 179-191页

作者：李江海初凤友牛向龙冯军 t.m.kusky 教育部造山带与地壳演化重点实验室北京大学地球与空间科学学院国家海洋局海底科学重点实验室 Department of Earth and Atmospheric Sciences St.Louis University St.Louis MO 63103USA

报道了河北兴隆高板河中元古代硫化物矿床中保留完好的古海底黑烟囱群.高板河古海底黑烟囱群呈柱状、锥状、圆丘状、尖顶状及复合状等形态,显示良好的热水通道,一些烟囱顶部还保留明显的喷口以及放射状纹理,记录了海底成矿热水以多种活... 详细信息

报道了河北兴隆高板河中元古代硫化物矿床中保留完好的古海底黑烟囱群.高板河古海底黑烟囱群呈柱状、锥状、圆丘状、尖顶状及复合状等形态,显示良好的热水通道,一些烟囱顶部还保留明显的喷口以及放射状纹理,记录了海底成矿热水以多种活动方式喷溢.它们的形态和组成类似现代洋底黑烟囱及世界其他地区发现的古海底黑烟囱.研究认为,该区黑烟囱发育于地堑深水盆地,与海底同沉积断裂活动密切相关.结构构造对比分析表明,含矿热水与海水作用形成黑烟囱外壁,通道内含矿热水持续运移及圈闭造成烟囱内部分带性及交代结晶过程.该区保留了不同形态和结构的烟囱类型,表明海底成矿过程中涉及含矿热水的集束喷溢及弥散喷溢.

关键词：海底黑烟囱中元古代地质成因成矿过程分带性交代硫化物矿床保留形态和热水

应用叠层石的向阳性恢复古板块——原理及应用

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地质科学译丛 1992年第2期9卷 33-39页

作者： t.m.kusky J.P.Vanyo 田白 Department of Geosciences University of Houston Houston Texas 77204-5503

石化的柱状叠层石和其它微生物体,如果具有向阳性的话,就会倾向平均的太阳辐射入射方向,从而记录下有利于恢复古板块格局的信息.一些活着的生长很快的小向阳性微生物体,由于太阳辐射倾角的季节性变化形成正弦曲线柱.其它向阳性微生物仅... 详细信息

石化的柱状叠层石和其它微生物体,如果具有向阳性的话,就会倾向平均的太阳辐射入射方向,从而记录下有利于恢复古板块格局的信息.一些活着的生长很快的小向阳性微生物体,由于太阳辐射倾角的季节性变化形成正弦曲线柱.其它向阳性微生物仅仅倾向赤道.石化的向阳性叠层石也同样具有可记录古代太阳相对于其生长地层的位置的潜力,从而可据此推测古经度线(包含倾斜叠层石柱和/或正弦曲线柱的平面)和古纬度(净倾斜量).应用向阳性叠层石恢复古大陆轮廓,要测量单个叠层石柱偏离垂直生长方向的视偏度,经折射和应变修正后,此偏度被用作最小古纬度.包含倾斜叠层石柱并垂直层面的平面就相当于一个很大的古经度圆.古地理地极都在此大圆上,其位置由古纬度资料确定,或者单独用两个时代相同但彼次分开的叠层石柱在古经度上的交点来确定.用由此方法得到的古经、纬度资料可以绘出古向阳性视极性迁移路径(paleobeliotropic apparent polar wander paths).用此方法可以得出真实的古经度线和有关真实古纬度的信息,因为向阳性与地球的自转极有关,而不是与一个假设的静态磁极有关,这是此方法的优越性所在.在地质记录中有大量的叠层石,分析向阳性可能会得出板块转动的信息,从而对比地史中古地磁极和地理极的位置.

关键词：古板块向阳性叠层石

Comparison of Results of Recent Seismic Profiles with tectonic models of the North China Craton

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Journal of Earth Science 2011年第2期22卷 250-259页

作者： timothy m kusky State Key Laboratory of Geological Processes and mineral Resources Three Gorges Research Center for Geo-hazardMinistry of EducationChina University of Geosciences

the geometry and timing of amalgamation of the North China craton（NCC） have been controversial,with three main models with significantly different interpretations of regional structure,geochronology,and geological *** model of Zhao G C et *** that the eastern and western blocks of the NCC formed separately in the Archean,and an active margin was developed on the eastern block between 2.5 and 1.85 Ga,when the two blocks collided above an east dipping subduc-tion *** model of kusky et *** that the eastern block rifted from an unknown larger continent at circa 2.7 Ga,and experienced a collision with an arc（perhaps attached to the western block） above a west-dipping subduction zone at 2.5 Ga,and the 1.85 Ga metamorphism is related to a collision along the northern margin of the craton when the NCC joined the Columbia *** model of Faure et *** two collisions in the central orogenic belt,at 2.1 and 1.88 *** seismic results support both the models of kusky et *** Faure et al.,showing that subduction be-neath the central orogenic belt（COB） was west-directed,and that there is a second,west-dipping pa-leosubduction zone located to the east of the COB dipping beneath the western block（Ordos craton）.the boundaries identified through geophysics do not correlate with the boundaries of the trans-North China orogen suggested in the Zhao et ***,and the subduction polarity is opposite that predicted by that *** seismic profiles are consistent with an Archean collision above a west-dipping sub-duction zone beneath the COB predicted by the models of kusky et al.,and the second west-dipping subduction zone is consistent with the two events suggested in the Faure et ***.

关键词： North China craton Archean tectonics geophysics.

transport mechanism in chemically reactive hybrid nanofluid flow containing gyrotactic micro-organisms over a curved oscillatory surface

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Applied mathematics and mechanics(English Edition) 2025年第1期46卷 177-192页

作者： m.NAVEED m.ImRAN t.ASGHAR Z.ABBAS Department of mathematics Division of Science and TechnologyUniversity of Education Department of mathematics The Islamia University of Bahawalpur

this paper examines the transport analysis, including both heat transfer and mass transfer, in hybrid nanofluid flow containing gyrotactic microorganisms towards a curved oscillatory surface. the influence of magnetic fields is also inspected in terms of their physical characteristics. to depict the phenomena of transport, modified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and homogeneous chemical reactions are also incorporated. Utilizing a curvilinear coordinate system, the flow problem is formulated as partial differential equations(PDEs)for momentum, concentration, microorganism field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the homotopy analysis method(HAm).the effects of significant flow parameters on the pressure and microorganism fields, velocity, oscillation velocity, concentration, and temperature distributions are shown via graphs. Furthermore, the variations in skin friction, mass transfer rate, heat transfer rate, and local motile number due to different involved parameters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and temperature fields are enhanced as the values of the solid volume fraction variables *** is also verified that the concentration rate field decreases as the values of the homogeneous reaction strength parameter and the radius of curvature parameter increase, and it increases with the Schmidt number and the heterogeneous reaction strength *** outcomes show a favorable response of the motile number to advanced values of the Peclet number, the Schmidt number, the microorganism difference parameter, and the bio-convective Lewis number.

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the Neoarchean Ophiolite in the North China Craton:Early Precambrian Plate tectonics and Scientific Debate

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Journal of Earth Science 2012年第3期23卷 277-284页

作者： timothy m kusky 翟明国 three Gorges Research Center for Geo-hazards Ministry of EducationChina University of Geosciences State Key Laboratory of Geological Processes and mineral Resources China University of Geosciences State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of Sciences

Archean greenstone belts and their possible inclusion of fragments of ophiolites is an im-portant research subject, since it is correlated with the nature of early oceanic crust, and can yield in-formation on the nature of early planetary lithospheres, the origin of ttG （tonalite-trondhjemite-granodiorite） continental crust, the formation of early cratons and continents, and is related to when plate tectonics started in the Earth＇s evolutionary history. this article briefly reviews the North China craton＇s Archean ophiolite argument and proposes further studies aimed at understanding the genera- tion of greenstone belts and Archean ophiolites, and suggests some key scientific questions that remain to be answered.

关键词： Archean ophiolite greenstone belt North China craton.

Comparative orotomy of the Archean Superior and Phanerozoic Altaid orogenic systems

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National Science Review 2023年第2期10卷 20-48页

作者： timothy m.kusky A.m.Celal ?eng?r Center for Global tectonics School of Earth Sciences and State Key Laboratory for Geological Processes and Mineral ResourcesChina University of Geosciences Badong National Observatory and Research Station for Geohazards Ministry of Education China University of Geosciences Department of Geological Engineering Middle East Technical University Eurasia Institute of Earth Sciences Istanbul Technical University Department of Geology Faculty of Mines Istanbul Technical University

We compare and contrast the materials and mechanisms of continental crustal growth in the largest preserved regions of Phanerozoic and Archean juvenile additions to the crust,to test for similarities or differences in the formation of continents through *** accomplish this through a comparison of map patterns,lithological contents,and structural and metamorphic evolution of the Phanerozoic Altaid orogenic system of Asia,with the Archean Superior Province of the North American Craton,using a method termed comparative *** orogenic systems consist of collages of curvilinear belts of eroded arcs,some older continental slivers,and vast tracts of former subduction/accretionary *** contain numerous shreds of portions of the ophiolite suite,slivers of island and continental arcs,and accreted oceanic plateau,all intruded by multiple magmatic suites during or between multiple deformation events,then sliced by large transcurrent fault systems and bent into large oroclinal *** make this comparison because the Superior Province is a typical Archean craton that was later,in the P aleoproterozoic,incorporated into the larger North American Craton,and has occupied a central position in several super continents(*** and Nuna,which then formed the core of Columbia,Rodinia,Laurentia and Pangea) during its *** it is the largest single fragment of Archean continental cratonic lithosphere preserved on Earth,the Superior Province is widely regarded as a testing ground for how Earth’s continental crust was ***,the Altaids encompass the largest region of crustal growth for the *** comparison with the Altaids is needed,as in recent years many myths about how the planet may have responded to higher heat production and flow in the Archean have emerged,because of trends in the science where regional geology is ignored in favor of numerical models,isotopic proxies for assumed models of chemical behavior for crust-for

关键词： Altaids superior province ophiolite subduction strike-slip

Déjàvu:might Future Eruptions of Hunga tonga-Hunga Ha'apai Volcano be a Repeat of the Devastating Eruption of Santorini,Greece(1650 BC)?

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Journal of Earth Science 2022年第2期33卷 229-235页

作者： timothy m.kusky Center for Global tectonics Three Gorges Research Center for Geo-HazardsChina University of GeosciencesWuhan 430074China

the remote Pacific islands nation of tonga(about 170 islands,with a population of 105000),and surrounding countries,are suffering from the damage from one of the largest,most explosive volcanic eruptions in at least several decades,at least since the 1991 eruption of Pinatubo in the *** data is still coming in from the Jan.15,2022 *** reports show(remarkably)few casualties,but the islands are still(as of this writing)inaccessible because of thick volcanic ash coverings。

关键词： volcanic eruption thick

Environmental monitoring of Bombetoka Bay and the Betsiboka Estuary,madagascar,Using multi-temporal Satellite Data

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Journal of Earth Science 2010年第2期21卷 210-226页

作者： tsilavo Raharimahefa timothy m kusky Department of Earth Sciences Laurentian University three Gorges Research Center for Geo-hazard Ministry of EducationChina University of Geosciences(Wuhan) State Key Laboratory of Geological Processes and mineral Resources China University of Geosciences(Wuhan)

the causes and consequences of soil erosion in madagascar have been the focus of recent environmental debates. the Betsiboka, madagascar＇s largest river stretching 600 km from the high central plateau to the northwest coast on the mozambique Channel, is a major conduit for transporting lateritic soils and sediments derived from the highlands of Central madagascar to the sea. these en- trained lateritic sediments color the river a blood-red hue, as if the life of the island is being drained away. In this study, Landsat visible and near infrared spectral bands are used to map the underwater sediments especially under the sea and in the interface between seawater and freshwater. Band color composites, single bands and band ratios are used to improve the detection of underwater sediments including sand bars and delta lobes. We show the evolution of the bay, coastline, delta, and change detection results derived from Landsat satellite images recorded in 1973, 1989, 1999, 2000 and 2003, respectively. Results indicate that sedimentary transport and suspension in Bombetoka Bay has significantly changed during the past 30 years, with a dramatic increase in the amount of sediment moved by the river, and deposited in the estuary and in offshore delta lobes. these changes have adversely affected agriculture, fisheries, and transportation for one of madagascar＇s largest ports. the changes are attributed to increased erosion following large-scale deforestation, bush fires, and overgrazing in the river basin.

关键词： environment monitoring madagascar delta remote sensing Landsat.

AStER Analysis for Locating REE-Bearing Granites in Arid Regions:Example from the Arabian Shield

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Journal of Earth Science 2022年第5期33卷 1114-1123页

作者： Reda Amer timothy m.kusky Department of Earth and Space Sciences Lamar UniversityBeaumontTX77710USA State Key Laboratory of Geological Processes and mineral Resources Center for Global TectonicsSchool of Earth SciencesBadong National Observatory and Research Station for GeohazardsChina University of GeosciencesWuhan430074China

the world’s increasing demand for rare earth elements(REEs)highlights the potential for using new multispectral remote sensing techniques to define new exploration targets in arid regions,such as the Kingdom of Saudi Arabia(KSA),Egypt,and regions of central and western *** REEs cannot be detected by satellite multispectral instruments,REEs-bearing alkaline granites can be identified on AStER ***,we develop a new AStER band ratio scheme to delineate mineralization-related features of the Ghurayyah REE-bearing peralkaline granite in the northwestern *** Ghurayyah peralkaline stock is located at the intersection of a NW striking segment of the Najd-fault system,and an E-W striking *** is surrounded to the north and west by metavolcanics,from east by the Jabal Dabbagh alkali granite,and from the south by *** mineralogical composition of granitic rocks resulted in spectral variation and causes absorption features at different wavelengths in the shortwave infrared(SWIR).the newly developed band ratios were constructed from(b6+b8)/(b6–b8)in red;(b6+b8)/b4 in green,and(b7–b9)/(b7+b9)in blue,enabling the discrimination between the Ghurayyah REE-bearing peralkaline granite,Jabal Dabbagh alkali granite,monzogranite,and *** work will be carried out to perform higher-resolution drone-based hyperspectral imaging for new high-resolution mapping and evaluate the existing REE deposits,emphasizing field spectral measurements to identify the spectral reflectance of REEs mineralized zones and the absorption features of monazite,columbite-tantalite,and aeschynite-(Y),coupled with rock sampling for petrographical,spectral,and geochemical *** methods have great potential for locating REEs-bearing peralkaline granites in the Arabian shield and elsewhere,such as arid portions of central and western China and adjacent regions.

关键词： remote sensing multispectral imaging rare earth elements Arabian Shield mineral exploration