查询词典 strata

Due to the relatively unique macrofossil assemblages in the Sinian strata of South China, its comparison with the Ediacara-type Biota occurring abundantly abroad in the strata postdating the last glacilation of Neopro-terozoic (including the Avalon Biota, the Pound/White Sea Biota and the Nama Biota) remains to be studied in detail in future.

由于华南震旦纪宏体化石具有较为独特的组合面貌，与国外末次冰期后大量出现的伊迪卡拉型生物群(阿瓦隆生物群，庞德/白海生物群和纳马生物群)如何对比，还有待深入的研究。

Exchange the heating well and the oil extraction well that the much more above-mentioned well electricity heat the oil shale retorting mine, continue to heat to mine. 5 after years, the temperature that is apart from to heat the or so place of 6 meters of well is also only is 500°C, but heat whole temperatures of the nearby rock strata of wells all very high, cause the calories follow the peripheral rock strata in great quantities lost.

2将上述多井电加热油页岩干馏开采的加热井与采油井交换位置，继续加热开采。5年后，距加热井6米左右的地方温度也仅为500℃，而待采油页岩层与邻近地层的接触面处整体温度很高，说明在整个开采过程中油页岩层向邻近地层散失了大量的热。

Directed at complete study on the law of the overlying strata and the characteristics of stress distribution on mining in steeply dipping seams,this paper is focused on research on the law of overlying strata and the stress variation characteristics by simulating the exploitation of the fully mechanized coal mining face in steeply dipping seam of Xinzhuangzi mine.

为了全面研究大倾角煤层开采上覆岩层垮落特征和围岩应力分布规律，运用相似材料模拟新庄孜矿大倾角综采工作面的开采，研究开采后大倾角工作面上覆岩层移动规律及应力变化特征。

The excavation surface model of the composition geologic strata for the shield machine was established, in which the soft soil and hard rocks are taken into account simultaneously. In terms of the cutting mechanism of the individual disc cutter and drag scraper, the total bending moment model on the cutterheads of shield machines was proposed. The bending moment behavior was discussed when the shield machine excavates in the composition geologic strata.

针对盾构机在掘进过程中上软下硬的复合地质结构，建立了其刀盘截面圆模型，基于单个切削刀和盘形滚刀的切削机制，建立了复合岩土层掘进时刀盘平面内总弯矩分析模型，分析了与刀盘接触的撑子面内，不同软土面积分数的复合地质条件下，刀盘旋转掘进过程中的弯矩动态特性。

Results Xunhua-Guide area is characterized by step-shaped low-relief at different elevation. The low-relief surfaces developed above the newer strata in sedimentary basin among the Oligocene to the lower Pleistocene are in higher elevation, but above the older strata, are in lower elevation. The elevations of all above low-relief surfaces are lower than those of the planation surface above the bedrocks in the thrust belts. The low-relief surfaces of terraces, developed on both sides of the deep-cutting valleys within the basins, are lowest in elevation.

结果 循化－贵德地区地形形态总体呈台阶状结构，在不同海拔高度存在低起伏地形；发育于盆地沉积地层之上的低起伏面表现为年代越新的地层之上低起伏面高程越高，越老的地层高程越低，并且它们均低于发育于逆冲带基岩之上的夷平面；发育于盆地深切河谷两侧阶地之上的低起伏面海拔高程总体较低。

Study suggests the strata of this block are of the following feature: various sequence interface types, first-class fault and tectonic movement control strata framework styles; formation and evolution of Maodun sub-high makes single-lined fault dustpan-type depression complicated to produce unsymmetrical grabens and igneous rock, which influences detrital rock infilling pattern in the depression.

研究认为，本区地层格架有以下特点：多种层序界面类型、地层格架的样式受凹陷内一级断层和构造运动的控制、毛敦次凸的形成及演化将单断箕状凹陷复杂化，形成不对称地堑、火成岩的发育影响了箕状凹陷的碎屑岩充填模式。

This paper presents a rapid inversion method for 3D apparent density based on separation and continuation of potential field. The new method is carried out in the following three steps. Firstly, the gravity field on the plane is separated by a cutting method into several parts corresponding to strata of different depth. Secondly, by the way of downward continuation, the field resulted from different strata is respectively reduced to a plane corresponding to its depth.

文中提出了一种基于位场分离与延拓的视密度快速反演方法：首先应用场分离的切割法对平面上的重力场进行不同深度层源的切割分离；然后运用大深度向下延拓方法将各层的场延拓至相应的深度；最后反演出各深度层的密度。

The orogenic strata have following characteristics: During the subduction and intracontinental orogeny, the strata experienced dramatic tectonic migration and mixing, resulting in various tectonic features. A short sequence usually composed of tectonic slices of various origins, times, deformations and metamorphisms, and scales. The original sequence was badly destroyed. The extant fragments of orogenic belt usually took form as melanges, especially the accretion complex wedge generated in subduction zone, which is contrary to the Law of Superposition. The original location of the accretion is also contradicted with the Law of Original Horizonality, because the accretion is oblique with high degree. Marine rocks, volcanic rocks of continental margin and metamorphic rocks were well-developed in the orogenic belt, especially ultra-basic, basic rocks were wide spread and were intensely metamorphosed, accompanied by metamorphic slices returned from hundred kilometers underground with ultra-high pressure and magma movements during syn-orogeny and post-orogeny, thus formed the colorful landscapes.

造山带非史密斯地层构成具如下独特性和复杂性：造山带在俯冲碰撞和陆内造山阶段，发生过强烈的构造搬运和构造混杂，构造形迹多样化，垂直不长的地层体往往是众多不同来源、不同时代，不同变形变质程度，不同大小的各种构造岩片拼贴体，地层原始层序被严重肢解、破坏；尤以产于俯冲带的俯冲增生杂岩楔的原始形成方式与史密斯地层学的&层序叠覆律&老下新上的顺序正好相反，其混杂岩增生方式是老的&片体&在上，新的&片体&阶段性拼贴在老的&增生片体&的斜下方，这种增生片体的原始位置亦与&原始水平律&相悖，即增生片体一般保持较高角度倾斜；在岩石类型和变质程度上，造山带海相和古陆缘火山岩以及变质岩普遍发育，尤其是超基性、基性岩系分布广泛，变质作用较强，伴有从百余公里以下深部超高压变质岩片的折返和同造山期与造山后期岩浆活动，构成极为复杂的地质景观。

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。

Restoration of paleo-geothermal field based on vitrinite reflectance in strata indicates that the paleo-geothermal of Pre-Permian strata in mineralization district of the Youjiang basin was up to above 280℃, and that of Triassic falls between 150℃ and 250℃.

通过地层中镜质体反射率值对古地热场进行恢复，确定右江盆地成矿区内二叠纪以下地层曾经所达到的古地温在280℃以上。而三叠纪含矿层段所达到的古地温在150℃-250℃之间。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。