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1:250000 geological mapping has further revealed the mysteries of the tectonics of the Qinghai-Tibet Plateau. The Altun Mountains are not of the Tarim massif, but a part of the Kunlun-Qilian-Qinling orogenic system; the Altun fault is a large transform fault; the Muztag-Maqên suture zone and Jinshajiang suture zone are both Variscan ones; the Songpan-Garzê area in the Triassic was a huge turbidite basin on the southern margin of Laurasia; the Gangdise belt underwent the important Indosinian orogenic movement; an ocean basin that persisted from the Paleozoic to Triassic did not exist, i.e. the so-called Paleo-Tethys or permanent Tethys was not in existence in the Qinghai-Tibet Plateau. In the Paleozoic, most parts of China, including the Sino-Korean, Yangtze and Tarim massifs and the Qinghai-Tibet Plateau, were located in south of the main ocean basin—the Central Asian-Mongolian sea way—of the Paleo-Asia ocean, belonging to the northern margin of Gondwana. The Yarlung Zangbo and Bangong -Nujiang belts were twins in the Tethyan Ocean, which began to develop into two ocean rift belts in the Triassic. The Tethyan Ocean with the Yarlung Zangbo belt as the main ocean basin belt began to be subducted in the Late Triassic and experienced a process of pulsatory plate convergence orogeny including the Indosinian, Yanshanian and Himalayan stages.
1:25万地质填图进一步揭开了青藏高原地区大地构造的奥秘:阿尔金山是昆仑,祁连-秦岭造山系的一部分;阿尔金断裂确是一条大型转换断层;木孜塔格-玛沁缝合带和金沙江缝合带均是华力西缝合带;松潘甘孜三叠系沉积盆地是劳亚大陆南部边缘的浊积岩盆地;冈底斯带曾经历了重要的印支造山运动;不存在从古生代延续到三叠纪的大洋盆地,即不存在所谓古特提斯或永久特提斯;古生代时期,在青藏高原地区亦不存在具古生物,古地理分隔意义的大洋盆地,当时,包括中朝,扬子,塔里木以及青藏高原地区在内的中国大部分均位于古亚洲洋主洋盆——中亚-蒙古带之南,属冈瓦纳大陆结构复杂的北部边缘;雅鲁藏布江和班公湖-怒江带是特提斯洋中的孪生姊妹,它们均是从三叠纪起就发展成大洋裂谷带的;以雅鲁藏布江带为主洋盆带的特提斯洋,从三叠纪晚期开始消减,经历了印支,燕山,喜马拉雅3个阶段脉动式板块汇聚造山过程。
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We have concluded five key tectonics geologic characteristics of Chinese foreland basins based on the study of the sedimentary infill, tectonics evolution, tectonic dynamics, spatial location distribution and structural deformation geometry.(1) The foreland basin is the superimposition of the compression sedimentary stratigraphic sequence with the extension basin, and the foreland basin includes underlying rift basin and upper dustpan flexure deposited basin.(2) The foreland thrustfold structural deformation has occurred four times since the Protozoic, in the Late Caledonian, Late Hercynian, Indosinan and Late Himalayan, respectively.(3) The foreland basin developed based on the control of two factors that are the basin basement collaged by many small plates or terrains and the rejuvenation of ancient orogenic belt, so the foreland basins or foreland thrusts are located in front of ancient orogenic belt.(4) The foreland basins and the rejuvenation of ancient orogenic belt make up a giant basinmountains system resulting from the distant effect of IndiaEurasia collision, which is located on the outer circle of Tibet Plateau, so the thrust deformation intensity, basin deposition range and coupling between orogenic belt and basin changed from strong to weak as from interior to outer circle of Tibet Plateau.(5) There are many structural styles of the thrust and fold belt in different basins, such as brittle behavior faultrelated fold, ductile behavior basementinvolved structure, basementinvolved faultrelated fold, and salt structure.
在综述前人认识的基础上,笔者通过对中国前陆盆地的构造演化历程、沉积充填特征、构造成因及其空间分布规律、构造变形特征等的研究,提出了中国前陆盆地构造地质发育的5个主要特征:(1)两种不同性质的原型盆地发生正反转的叠合性,即挤压构造下作为&本体&的前陆层序与拉张构造下作为&基础&的裂谷、断陷盆地之间的叠置;(2)显生宙以来中国大陆先后发生了4期前陆冲断构造演化的多期性,它们分别是加里东晚期、海西晚期、印支期和喜马拉雅晚期;(3)基于小克拉通基底拼贴后在造山带前缘复活再生的继承性,即统一拼合大陆内部的构造变形导致古造山带的复活,在古造山带边缘发育新生代前陆盆地或前陆冲断带;(4)在空间分布上受环青藏高原巨型盆山体系控制发生陆内变形的系统性,在环青藏高原巨型盆山体系内构造变形强度、盆地沉降幅度、盆山耦合程度等从内环向外环依次降低,从古造山带向克拉通方向构造变形强度依次降低,构造变形样式逐渐简单、构造变形时间依次变新;(5)前陆冲断带的构造样式由于受边界力学条件和沉积地层介质作用而具有多变性,存在沉积盖层内脆性变形的断层相关褶皱、造山带前缘韧性变形的基底卷入构造、与走滑构造相伴生的基底卷入的断层相关褶皱、盆地内部塑性变形的盐构造。
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Combined the geological analysis with analogue modeling experiments,the evolution of the Yinggehai basin could be divided into four main stages:(1) Before 42Ma,controlled by the southeastward extension of the Beibu Gulf basin on the northern continental margin,the Yinggehai basin experienced dextral pull-apart.Bounded by NS-trending Yingxi fault,the transtensional areas mainly are the northwest part and along the eastern boundary of the basin.(2) From 42 to 21Ma,the development of the main rift body in Yinggehai basin was mainly controlled by the southward slip and clockwise rotation of the Indochina block along the Red River fault zone,and the sedimentation was strengthened due to the sinistral transtension.In the east,the subsidence is deepened due to the dextral transtension.(3) From 21 to 10.4Ma,the sinistral movement of the Indochina block slowed down to still.From 21 to 15.5Ma,the northwest part of the basin began to inverse locally because of post-rift thermal subsidence of the whole basin.(4) From 10.4Ma to present,the basin was affected by the dextral movement of the South China block along the Red River fault zone and thermal accident in a new phase at 5Ma.
结合地质分析和物理模拟实验,莺歌海盆地的演化大致可以分为以下4个主要阶段:早期(42 Ma以前)主要受到南海北部陆缘裂解造成的右旋转换伸展作用的影响,但影响范围较小,主要为莺歌海盆地西北部和东部边界。42~21 Ma期间,主要受控于印支地块左行走滑和顺时针旋转作用的影响,莺歌海盆地在此期间发育了主体裂陷体系,东侧受到右旋转换伸展应力场的叠加影响而导致沉降加强;21~10.4 Ma期间,受印支地块逐渐减弱直至停止的左行走滑作用的影响,盆地西北部在21~15.5 Ma期间发生局部反转褶皱,但盆地整体进入以热沉降为主的时期;10.4 Ma以后,盆地受华南地块沿红河断裂右旋走滑作用和5 Ma以后新一期热事件的影响。
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Luoyang-Yichuan basin is a multicycle superimposed continental sedimentary basin in middle Cenozoic, east of China. The basin has gone through such evolution stages as craton passive continental margin basin in Pre Mesozoic, depression basin in early Mesozoic, foredeep basin in late Mesozoic and fault depression basin in Cenozoic, etc. The Tectonic evolution of the basin is characterized by obvious multicycle superposition and multi-tectonism.
洛阳—伊川盆地是中国东部中新生代叠合多旋回陆相沉积盆地,其形成主要经历了前中生代克拉通被动大陆边缘盆地、早中生代坳陷盆地、晚中生代前渊盆地和新生代断陷—坳陷盆地等演化阶段,构造演化具有明显的多期次叠合,多构造作用的特点。
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Some of geological evolution process in Qinghai-Tibet plateau and were recorded in corresponding basins, By the research of sedimentary filling pattern and dynamic background at Cenozoic in Hoh Xii basin, Qaidam basin and Jiuquan basin, we can find that evolution sequences of these three basins are similar: strike-slip basin or extensional basin at the early stage. foreland basin at the middle stage, intermontane basin at the end.
对可可西里盆地、柴达木盆地和酒泉盆地新生代的沉积充填与盆地动力学背景的研究发现,3个盆地的演化序列具有相似性,盆地的早期为走滑盆地或伸展盆地性质,中期发育前陆盆地,最后以山间盆地结束。
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To No. 20 are respectively black mudstone, black mudstone ( Caitun mining area of Benxi Basin,Paleozoic), dark grey gangue (Caitun mining area of Benxi Basin, Paleozoic), brown shale(Caitun mining area of Benxi Basin, Paleozoic), brown grey shale(The West Opencut Coal Mine of Fushun Basin, Cenozoic), grey silty mudstone(Haizhou Opencut Coal Mine of Fuxin Basin, Mesozoic), black grey gangue(Haizhou Opencut Coal Mine of Fuxin Basin, Mesozoic), grey yellow clay(Jianping County, Chaoyang City, its era to be determined), grey silicon slate( Qianshan Mountain of Anshan City, pre-Paleozoic), grey phyllite(Qianshan Mountain of Anshan City, pre-Paleozoic), granite-gneiss(Qianshan Mountain of Anshan City, pre-Paleozoic), granite(Mount Yiwulu, its era to be determined), diorite(Mount Yiwulu, its era to be determined), black basalt(The West Opencut Coal Mine of Fushun Basin, Cenozoic), dark purple andesite( Mount Guiyunhua of Zhuanghe City, Mesozoic), fragment of brick-tile-pottery-porcelain( from the building site of Panjin City), coal cinder( from the boiler room of Heji Road of Panjin City), cement( from the building site of Panjin City) and slag (from Bohai Stockroom of Liaohe Oilfield produced in Anshan City).
2-20号样品分别是黑色泥岩、黑色泥岩、深灰色煤矸石、褐色页岩、褐灰色油页岩、灰色粉砂质泥岩(阜新海州露天矿、中生代)、黑灰色煤矸石(阜新海州露天矿、中生代)、灰黄色膨润土、灰色硅质板岩、灰色千枚岩、花岗片麻岩、花岗岩、闪长岩、黑色玄武岩、暗紫色安山岩、砖瓦陶瓷碎片、粉煤灰、水泥、矿渣(鞍山产、取自辽河油田渤海库),这19个样品用来代表工业、采矿、冶炼、建筑等行业产生的固体废弃物。
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Based on the data analysis and numerical simulation, the Arctic sea ice climate variability was researched, the result were as following:(1) The analysis on the seasonal cycle of the Arctic Ocean and atmosphere showed that: The seasonal surface wind is somewhat trade wind like in some regions in the Arctic. The surface air temperature is robustly determined from the underlying environments such as sea ice and Greenland glaciers. In the sea ice region the precipitation rate is larger than that of evaporation. Furthermore, the Arctic Ocean hydrology is profoundly influenced by the surrounding rivers discharge. These are the decisive factors on the ocean salinity pattern. Sea ice flux through the Fram Strait is larger in winter than in summer. From the 40s in the 20th century on, the ice volume flux has an increasing trend. The Arctic rivers flood season is about the melt period, the winter rivers discharge has a significant increasing. Correlation analysis shows that 7 to 10 years is a characteristic time scale that rivers discharge leads Fram Strait ice volume export.(2) Considering 9 major arctic rivers, the Arctic Ocean circulation was simulated through BOM. The result shows that: The BOM can reproduce the main Arctic Ocean circulation pattern. The"Islandization"which is commonly used in OGCMs to treat the North Pole, not only influences the ocean current near the pole, but also influences the current in the Northern Atlantic Ocean, thus the bogus island might influence global climate through thermohaline circulation in the Atlantic Ocean.
在资料分析和数值模拟的基础上,对北极海冰的气候变率进行了深入的研究,结果如下:(1)对北极地区大气和海洋季节循环特征的分析表明,气候平均风场在部分地区具有&信风&的性质;而气温场与海冰分布及格陵兰半岛冰原的下垫面特征有密切关系;在北极海冰区的降水量大于蒸发量,并且在全球大洋中北冰洋受到河流径流的影响最大,对北冰洋的盐度分布有决定作用;通过弗瑞姆海峡的海冰通量在冬半年大于夏半年,并且从20世纪40年代起,海冰的体积输送有增加趋势;北极河流的汛期主要在融化季节,冬季的河流流量有显著增加的趋势;相关分析表明7到10年是北极河流流量影响弗瑞姆海峡海冰体积输送的一个特征时间尺度;(2)采用BOM海洋模式对北冰洋海洋环流进行了模拟研究,在模式中考虑了北极9条主要河流的作用,结果表明该海洋模式可以较好模拟出北冰洋海洋环流的基本特征;多数大洋环流模式采用&北极岛化&的方法处理北极点,模拟结果表明&北极岛化&不仅影响到极点附近的海流,还会对相对较远的北大西洋海流造成影响,并可能通过大西洋的热盐环流对全球气候产生影响;(3)采用CSIM4海冰模式对北极海冰的气候态进行了模拟。
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Based on analysises of characteristics of regional deformation and metamorphism as well as Carboniferous and Permian relict basins, think Qinling-Dabie orogenic belt might have undergone following Basin-mountain transformational process : the ocean basin developed in Silurian-early Paleozoic; ocean basin subduction began in Ordovician; Silurian-early Devonian continent-continent collision happened and the ocean basin disappeared; Carboniferous- Permian, with the strike-slip and pull-apart along the Shangdan fault, a series of small faulted basins formed on the north Qinling mountainous region composing of Pre-Carboniferous metamorphic stratum.
在解析区域变形变质特征,岩浆侵位的构造演化和北秦岭区石炭—二叠纪残余盆地分析基础上,认为秦岭—大别造山带现今的残余的加里东造山带,可能经历了震旦纪—早古生代洋盆发育,奥陶纪洋盆俯冲,志留纪—早泥盆世碰撞造山,洋盆消失,石炭—二叠纪沿商丹带走滑拉分断陷形成上叠于北秦岭加里东造山带之上的石炭—二叠纪沉积盆地的盆山转换过程。
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Taking the plate tectonics as leading theories, combining outcrop, seismic techniques, drilling and logging datum, inter-verifing manifold researching methods, The paper has amply researched the region. discussed the coupling relation of basin-mountain and the geodynamics system; analyzed geologic tectonic characteristics of the basin; confirmed superposed alteration in Mesozoic of the basin; recompartmentalized tectonic units of the researching region and the basin; studied the tectonic evolution of the basin since Mesozoic; ascertained four large tectonic layers and five tectonic evolution process stages in different ways of formation and tectonic alteration; established different tectonic stages、compages、models and sedimentary filled processes, based on the organic geochemistry and oil-gas geologic characteristics in middle Cenozoic of the basin, the conclusions have been summarized in the paper, such as:The primary source rock in lower Permian and subordinate source rock in upper Triassic are developed in the region with better quality, and secondary hydrocarbon is possible; The bearing system which is comparted by three large tectonic layers and two unconformity surfaces formed in Palaeozoic、upper Palaeozoic to Triassic and Cenozoic developing in the region, compounded with reservoirs of different lithology is developed in the region, while the property of tectonic fracture reservoir is better; Based on the analyzing petroleum accumulation elements and preserving conditions, the deep depressing belt in the north of Luoyang depression、Shiling-Yiyang folded fault belt in Yiyang depression and wide anticline belt in Yichuan depression are advantageous petroliferous region, Zhaizhen anticline in Luoyang depression and Shimen wide anticline on footwall of overthrust in Yichuan depression are optimum tectonic traps.
本文以板块构造理论为指导思想,采用露头区野外地质与盆地地震、钻井、测井资料密切结合,多种测试方法互检的研究方法,探讨了盆山耦合关系及其所控制的地球动力学系统;分析了研究区域和盆地地质结构构造特征,确定了中生代盆地的叠合改造性质,并重新划分区域构造单元和盆地构造单元,深入研究了洛阳—伊川盆地自中生代以来的构造演化;确定了成盆作用和构造改造作用的四大构造层和五期不同方式、方向的构造演化过程;建立了不同构造阶段的构造组合和样式及与构造相关的沉积充填过程;在此基础上通过多种有机地球化学指标,研究盆地中新生代油气地质特征,认为本区发育下二叠统区域主力烃源岩、上三叠统区域非主力烃源岩,两套烃源岩质量均较好,并具备二次生烃条件;认为本区发育古生界、上古生界—三叠系和新生界三大构造层、两个不整合界面分隔、不同岩性储集层叠置组合和构造裂隙型储集层的复式储集体系,其中构造裂隙型储集层储集性能较好;依据油气成藏条件和保存条件分析,认为洛阳凹陷北部深凹带、宜阳凹陷内石陵—宜阳褶断带以及伊川凹陷伊川宽阔背斜带为较有利含油气区,有利的构造圈闭是洛阳凹陷翟镇背斜和伊川凹陷的石门逆冲断层下盘的宽缓背斜
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Dawsonite of Mesozoic strata in Northeast China and adjacent area distribute in Lower Cretaceous strata from Hailaer basin,Tamtsag basin, Erlian basin, Kailu basin and Fuxin basin, and Upper part of Lower Cretaceous and Lower part of Upper Cretaceous from southern Songliao basin.
东北及邻区中生代地层中的片钠铝石分布于海拉尔盆地、塔木察格盆地、二连盆地、开鲁盆地和阜新盆地的早白垩世地层及松辽盆地南部的早白垩世晚期-晚白垩世早期地层中。
- 相关中文对照歌词
- OGOD
- Basin Street Blues
- Basin Street Blues
- Basin Street Blues
- Ocean Gang Splash
- Ocean
- Mississippi Basin
- Four Walls
- Basin Street Blues
- Basin Street Blues
- 推荐网络例句
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"Bird Man's Diary, Butting on the Love Island", Changsha, China
2008年"鸟人日记,顶在爱情岛",中国长沙
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As long as they were in the service of a family of wizards, their magic would remain dormant.
只要他们一天为家庭服务,他们的法力就潜藏不动。
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It was time to hold a court and the subject for discussion was the future of that prisoner.
开庭时间到了,大家讨论的话题是那名罪犯的下场。