查询词典 kinetic metamorphism
- 与 kinetic metamorphism 相关的网络例句 [注:此内容来源于网络,仅供参考]
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By sutdy and gathering information, some important conclusions are presented:(1) Ruby deposits of marble type were located in the plutonic metamorphic zones of orogene where deep-seated fault structure is developed;(2) Genesis of the deposit belongs to the type of thermal-dynamic metamorphism;(3) Ruby-bearing rocks are calcic crystalline marbles, not magnesian marbles;(4) Amphiboles in ruby-bearing rocks arenot tremolites, but silica-poor alumina-rich and chrome-bearing calcic amphiboles.
目前,对于此类型矿床找矿相关的若干重要问题的认识,还相当模糊,主要表现在以下几方面:(1)对此类型矿床的产出构造背景认识不清;(2)认为此类矿床的成因类型为&气成一热液型&或&矽卡岩型&;(3)认为含矿岩石为镁质大理岩或镁质矽卡岩;(4)认为含矿岩石中的角门石为透门石。本文通过实际研究①和相关文献资料的搜集整理,分别对这些
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The outgas types and amount of different gas resource varied with the different geological conditions and evolution processes. There are four outgas models including the model in which inorganic gas directly overflows from mantle matter through lithospheric fracture,the model of heat flow piercement outgas,the model of volcano-magma outgas,and the model of carbonate rock outgas due to heat metamorphism.
对气藏成藏条件和深部壳幔结构的研究表明,松辽盆地存在多种类型无机&气源&,由于赋存的地质条件和演化过程不同,不同气源脱气的方式、脱出气体的类型、脱气量也大不相同,共有4种主要的模式:地幔物质沿超岩石圈断裂直接脱气模式;热流底辟体脱气模式;火山—岩浆成因模式;碳酸盐岩热变质成因模式。
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Huangqiao carbon dioxide gas field in North Jiangsu Basin have the following characteristics: deep gas fields are associated with shallow ones, marine gas fields are coupled with continental ones, and several gas reservoirs are combined. Carbon dioxide in Huangqiao area mainly comes from deep mantle, mixed with a little thermal metamorphism and a little organic carbon dioxide in shallow formation, and helium and nitrogen gas mainly come from mantle. There is a good time\|space matching relationship between carbon dioxide gas reservoirs and great rifts, magma and volcano activity, which forms the special carbon dioxide gas reservoir mode for Huangqiao. This mode has good sealing, trapping and preserving conditions, but its gas source differs from traditional hydrocarbon gas reservoirs.
苏北盆地黄桥CO2气田具有深部气田与浅部气田、海相气田与陆相气田匹配组合互成一体、多个气藏组合分布的特点,其CO2主要以深部幔源成因为主,浅层混有部分热变质成因和少量有机成因CO2,氦气和氮气主要为幔源成因,而且,黄桥地区CO2气藏的发育与深大断裂和岩浆火山活动具有很好的时空配置关系,形成了独特的&黄桥式&CO2气成藏模式,并具备良好的储盖圈保条件。
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The main process of ice formation is the metamorphism from melting-refreezing of the seasonally accumulated snow, therefore there exists a broad belt of superimposed ice.
冰舌中段主流线处年平均运动速度为171.4m;通过冰川水量平衡计算,近年来冰川均表现为负平衡,冰舌末端持续后退。
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High oxygen isotope temperatures of 650 to 695℃ were obtained when pairing quartz with such resistant minerals as garnet, zircon and kyanite, suggesting that the refractory minerals have preserved their oxygen isotope compositions acquired during eclogitization and only suffered much weaker retrograde metamorphism than the other minerals in the eclogite.
石英-耐熔矿物对氧同位素温度主要集中在650~695℃之间,表明耐熔矿物石榴石、锆石和蓝晶石在该区榴辉岩中相对其它矿物来说保存最好,退变质作用最弱,因此其氧同位素温度与峰期超高压榴辉岩相变质奈件基本一致。
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Plate tectonics; ocean ridge; magmatism; ocean crust; lithosphere; Benioff Zone; Precambrian; seafloor magnetic lineations; mantle; basalt; transform fault; metamorphism; metamorphic facies; Strontium isotope; sulphide ore
关键词:板块构造;洋脊;岩浆作用;洋底壳;岩石圈;贝尼奥夫带;前寒武纪;海底磁性线壮构造;地幔;玄武岩;转换断层;变质作用;变质相;锶同位素;硫化矿
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Therefore, the formation of the first episode of metamorphic zircons is correlated with fluid activity during the progressive high-pressure eclogite-faeies metamorphism.
年龄为240.9 4.8~245.1 3.1Ma的变质锆石的生长对应于板块俯冲过程中高压榴辉岩相变质作用期间的流体活动,而223.7 4.2-226.0 3.9Ma的变质锆石的生长可能对应了板块折返早期的流体活动。
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Of the five stages deformation, the exact ages of the (2) and (3) were determined by 40Ar/39Ar method as 290 and 259 Ma respectively.2. New results on the metamorphic belts and associated metamorphism of the Xiaopu metamorphic rocksBased on detailed microtextural observations and occurrence of typical metamorphic minerals, five metamorphic belts in the Xiaopu metamorphic rocks are identified. From the north to the south, they are biotite belt, garnet belt, staurolite belt, andalusite belt, and sillimanite belt. I suggested that the metamorphic belts occurred in the Xiaopu area belongs to the high temperature/low pressure series, may have resulted from the later Permian crust extension at ca. 290 Ma.3. I suggest that there may have been a Carboniferous backarc basin along the southern slope of the Harlik Mountain.Detrital Zircon SHRIMP U-Pb dating indicated that the sedimentary age of the Julideneng formation lithic sandstone must be later than late Devonian, most likely is Carboniferous rather than previously thought Precambrian. Analyses on its geologic setting, location of provenance, and sedimentary environment suggest the Carboniferous strata may form in a lagged backarc basin bounded by backarc uplifts.5. Reconstruction of the post-Paleozoic tectonic evolution history of the Harlik MountainThe tectonic evolution of Harlik mountains since the Paleozoic were reconstructed as followings:(1) arc-affinity magmative activities occurred during the middle-Ordovician to early-Silurian;(2) the middle-Silurian to late-Devonian was a back-arc uplift stage;(3) back-arc extension featured the Carboniferous period;(4) post-collisional extension and/then compression during Permian;(5) at the Mesozoic, differential uplift developed; and (6) the late Cenozoic is the intra-continental re-orogen stage.6. Primary estimation of the crust shortening is madeThe folded pre-Mesozoic strata were used to estimate crust shortening along the Harliknanshankou-Koumenzi, Shichengzi-Baishitou, and Qincheng-Xiaopu sections. Their shortening ratios are 16.2%, 19.8%, and 20.1% respectively corresponding crust shortening are 4.3, 9, and 11.3 km.
根据Ar-Ar热年代学研究,精确测定了早二叠世伸展变形和晚二叠世挤压变形的峰期时代分别为290Ma和259Ma.2、提出了关于哈尔里克山南麓小铺一带变质带和变质作用的新认识根据显微观察资料和特征变质矿物的出现,把小铺一带的变质岩由SW向NE方向依次划分为黑云母带、石榴石带、十字石带、红柱石带和矽线石带等变质带;初步确定该区的变质作用属于中温-低压型,变质作用发生的时代为290Ma左右,是该区早二叠世地壳伸展的产物。3、首次提出哈尔里克山南麓在石炭纪可能发育弧后盆地的新观点根据哈尔里克山南麓原&居里得能组&岩屑砂岩的碎屑锆石SHRIMP U-Pb定年,确认这套地层的沉积不早于晚泥盆世,很可能是石炭纪,而不是前人所说的前寒武纪;结合对其区域地质背景、源区位置和沉积环境分析,推测该区石炭纪可能为滞后弧后盆地和弧后隆起区构造背景。4、进一步证明哈尔里克山不发育与岛弧演化相关的泥盆纪岩浆活动根据对代表性闪长岩和花岗岩的锆石SHRIMP年代学研究获得的新资料,结合该区已有相关资料的综合研究,确定哈尔里克山岩浆岩分别形成于奥陶纪-志留纪和石炭纪晚期-二叠纪,不存在泥盆纪的岩浆岩,进而认为该区泥盆纪不属于岛弧环境。5、重建了哈尔里克山古生代以来的地质演化过程根据区域资料以及本次研究所获得的资料,把哈尔里克山古生代以来的构造演化划分中奥陶世-早志留世为岛弧、中志留世-晚泥盆世为弧后区、石炭纪弧后伸展、二叠纪为后碰撞伸展与挤压、中生代差异隆升和晚新生代陆内再造山过程等构造阶段。6、初步估算了哈尔里克山地壳缩短率和缩短量根据前中生代地层褶皱估算的哈尔里克山南山口-口门子、石城子-白石头和沁城-小铺三条剖面的地壳缩短率分别为16.2%、19.8%和20.1%,相应的地壳缩短量分别为4.3km、9km和11.3km。
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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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It makes known that the forming of ore-bearing skarn is the same as that of mineral deposit, and has the same experience of having been affected by the primary sedimentatin which is relating to the hot-water deposition, the regional metamorphism, and the limiting remaking of local magmatic hydrothermalism, and is the result of synthetical action by multiple geological events.
可以看出,含矿矽卡岩的形成同矿床一样,经历了与热水沉积作用有关的原始沉积作用,区域变质作用和局部地段岩浆热液的改造作用,是多次地质事件综合作用的结果。
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- 推荐网络例句
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Consumer preference ; fuzzy partial ordering relation ; condorect function
消费者偏好;模糊偏序关系; condorect函数
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And she doesn't have a cat, she has a Mexican hairless.
而且她不养猫,她养了一只墨西哥无毛犬。
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This is the time to push rather than to slacken our efforts.
今后更应向前推进一步,决不能松懈我们的努力。