查询词典 Cenozoic

Weihe valley is one of the areas where the study on late Cenozoic palynology began very early,involving more than twenty sections. By comparing the temporal and spatial distribution of the sporollon assemblages coupled with paleo-geomagnetism dating,we have ten areal zones.

本文在总结渭河谷地20多个孢粉剖面的基础上，依据古地磁资料确定其时代，并在空间和时间上进行孢粉组合对比，从而建立了10个区域孢粉组合带。

The tectonic evolution history of Tianshan is an example. In the Triassic, it was once uplifted to form the mountains with thick molasse accumulation on both its sides, Junggar and Tarim Basins. Then it became a peneplain by the exposion and deplanation in the Jurassic, forming the widespread coal-bearing strata which can be correlated. From the Cretaceous to the Early Cenozoic, it was uplifted again, until the Quaternary to build huge mountains with two large sedimentary basins on both sides.

如天山山脉的构造演化，三叠纪天山曾经一度隆起成山，两侧的准噶尔和塔里木盆地中堆积了巨厚的磨拉石；侏罗纪时由於剥蚀夷平成为一个准平原，形成了广泛分布且可以对比的含煤岩系；从白垩纪到早新生代，它再度隆升，直至第四纪时形成雄伟的高大山系，两侧形成相应的大型沈积盆地。

Based on the dating of Late Cenozoic strata and lithology changes analyses, it can infer the ages of layer landforms formation and the time of broken planation surface.

通过对晚新生代沉积地层高分辨率的环境磁学研究可进一步捕捉重大的环境变化事件，测定其形成的年代及变化，并推测剥蚀面形成和抬升的时间以及确定这些层状地貌形成的时代，进而推演六盘山和青藏高原构造隆升的历史。

The above phenomena are not consistent with the viewpoint of former workers that the deformation of Cenozoic strata in Ningxia occurred since the end of the Pliocene.

上述这些现象否定了前人认为宁夏地区第三系的变形发生在上新世末期-更新世以后的观点。

Four stages of granitoid plutonism took place in Precambrian, early Paleozoic （∈-D3）, late Paleozoic-early Mesozoic （D3-T3）, and late Mesozoic-Cenozoic, respectively.

该带内的花岗岩形成可以划分为4个时段，分别与4个造山旋回相对应：前寒武纪；早古生代；晚古生代—早中生代；晚中生代—新生代。

Divided by mudstones of the middle and lower parts in the Sha-3 Member, two superimposed fault systems are formed in the Cenozoic strata in the western sag, including long-term active faults, presenile active faults and late-developed active faults, which, in origin, are extensional normal fault, strike-slip fault, strike-slip normal fault, strike-slip reverse fault.

结果表明：以沙三段中下部大套泥岩为界，西部凹陷形成了上下叠加的2个断裂系统，主要发育长寿型、早衰型和后生型3种类型断层和张性正断层、走滑断层、走滑正断层和走滑逆断层4类不同性质断层。

Through deep revealment of the geological information, new evidence was obtained for a correct recognition of the Cenozoic forming and evolution mechanism of Bohai Bay Basin.

通过深人揭示残留地层所蕴涵的构造信息，为正确认识渤海湾盆地新生代形成演化机制提供了新的依据。

It is a megadepression evolving from a Mesozoic back-arc paraforeland basin to a Cenozoic intermountain basin, and filled with large sets of argillaceous rock, calcareous mudstone, carbonate rock and clastic rock of saliniferous-semisaliniferous environment under the semidry climate of inland lakes which form a set of giant-thick hydrocarbon source rock with two periods of hydrocarbon-expulsion peaks, two types of reservoir series as well as special capping and migration conditions.

是一个由中生代弧后准前陆盆地向新生代山间盆地发展演化的一个大型坳陷。充填了内陆湖泊半干旱气候下咸化环境－半咸化环境的大套泥质岩，含钙质泥岩及碳酸盐岩和碎屑岩。形成一套巨厚的具两期排烃高峰的烃源岩，两种类型的储集岩系、特殊的盖层条件及运移条件。

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。

Based on the subcrustal mantle convection-generated stress field inversed by gravity anomalies, together with its relationship to the Cenozoic volcanism in the plateau, and the mechanism of crustal fracture formation, as well as the numerical results of the evolution of mantle convection beneath the plateau, this paper investigates the deep mechanical mechanism for the formation of a magma transportation channel in the Tibetan Plateau.

为了研究火山形成基本要素―岩浆运移通道的形成，基于重力异常反演的青藏高原下地壳底部的地幔对流应力场，结合地壳破裂形成机理和对流应力场与青藏高原新生代火山分布的关系，以及青藏高原下地幔对流演化的数值模拟结果，分析了高原火山岩浆运移通道产生的深部力学机制。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。