古生代的

Abundant Late Paleozoic brachiopod fossils are contained in the Qiligou section of the Western Mountains, Taiyuan, Shanxi, and 13 benthic communities have been recognized.

太原西山七里沟晚古生代剖面含有丰富的腕足动物化石，共可识别出13个底栖生物群落。

The identification of the Early Caledonian granites is of important significance in studying the geological tectonic evolution of the area.

早古生代花岗岩的确认对该区地质构造演化研究具有重要意义。

The discovery of adakitic dacite confirms that ocean-continent subduction occurred in Early Palaeozoic on the northern margin of Qaidam basin.

柴北缘埃达克质英安岩的发现进一步证实了早古生代柴北缘发生过洋陆俯冲作用。

In the park, aggradation and st ru cture, such as magmatic rock, metamorphic rock and sedimentary rock of the 5periods of geologic history, namely 二 Archean Eon, Proterozoic Eon, Paleozoic, Mesozoic and Cenozoic, continuously and completely crop out, relics of angular discordance interface and structural feature fwature by 3 global Precambrian orogeny and epeirogeny respectively called SongYang motion, Zhongyue motion and Shaolin motion taking place 25billion years,1.8billion years and 546million years ago. This park is called by geologists as" natural geology museum ,of" five generations under one roof .

元古宙、古生代、中生代、新生代五个地质历史时期的岩浆岩、变质岩、沉积岩等沉积和构造，清晰地保存着发生在距今 25 亿年、 18 亿年、 5.46 亿年前被分别命名为高阳运动、中岳运动和少林运动的三次全球性前寒武纪造山、造陆运动所形成的角度不整合界面及构造形态遗迹，被地质学家称为"五世同堂"的"天然地质博物馆"。

There exists divergence on the understanding limit of geist.

目前对于古生代叶肢介的生态环境仅限于感性认识，观点尚不一致。

The orebody is located in a contacting belt between granodiorite of Mesozonic and calcareous-aluminous rocks of Peleozoic,and controled by structure and nature of the rocks.

矿床产于中生代花岗闪长岩和古生代钙铝质岩石的接触带中，矿体受构造和岩性控制。

Type genus of the Psilophytaceae: genus of small wiry herbaceous Paleozoic plants with underground rhizomes and ''.

裸蕨科的模式属；古生代植物，为小而坚韧的草木，具地下根状茎和顶生的孢子囊群。

The permo-carboniferous coal measures in North China Basin were formed under the condition of epicontinental sea which was characterized by the extreme gentle slope and high frequency of sae-level changes, the contemporaneous margin portion of which was probably very far or had been destroyed during the proccess of plate subduction and continental collision. The lowstand systems tract, therefore, has not be discovered up to now.

华北晚古生代内陆表海古地貌上表现出的极缓的基底和海平面的高频变化，具有特殊性，其同期的边缘海部分可能距离很远或在板块消减及大陆碰撞过程中被破坏掉，因而至今未发现低位体系域存在的证据。

In terms of structural characteristics and geochemistry of the granites in conjunction with previous studies, we interpret that the garnet-bearing gneissic granite was formed during the collision between the Tianshuihai terrane and the Southern Kunlun terrane following the closure of a branch of the paleo-Tethyan ocean along the Mazha-Kangxiwa suture zone, the block hornblende-bearing granite was formed during post-orogenic extension. On the other hand, the granites of ca.

根据两个岩体的构造特征，结合前人的研究及地球化学特征，表明含石榴子石片麻状花岗岩形成于同碰撞造山时期，是甜水海地体与西昆仑南带晚古生代岛弧沿麻扎-康西瓦缝合带碰撞峰期的产物，代表了沿麻扎-康西瓦分布的古特提斯洋一个分支的闭合，而228 Ma块状含角闪石花岗岩形成于碰撞造山后的伸展背景。220～190 Ma持续发育的花岗岩是南昆仑地体拼合到北昆仑地体之后在其南部形成的新的深成岩浆弧带。

They are:①completed total 8 000 km long natural seismic profiles cross the northern boundary and central part of the plateau, identified several deep-cut lithospheric faults and low velocity and low density bodies under the central part of the plateau related to Cenozoic volcanic eruption, the Tarim block subducted beneath the Altun Mts;②found the evidence that the Altyn Tagh fault formed in 220～240 Ma and at least 400 km sinistral offset since, and determined quantitatively deformation in Cenozoic;③discovered 350 km long high-ultrahigh pressure metamorphic belt in the south border of the Qilian terrane,which brobably represented the Early Paleozoic boundary between the North China and Yangtze plates;④according to new discoveries of caledonian ophiolite,granite are subducted complex established paleo-collision orogenic framework of northern Qinghai-Tibet plateau;⑤proposed a new model .

本文展示了中法1995～2000年青藏高原北部地学研究的如下主要新进展：①完成8 000 km长的青藏高原北部及中部天然地震岩石圈探测剖面，确定若干条岩石圈断裂，发现与新生代火山喷发有关的青藏高原中部深处的低速、低密度体，塔里木地块俯冲于阿尔金山之下；②提出阿尔金断裂形成于220～240 Ma和左行平移400 km的科学依据及确定其新生代变形量；③确定祁连南缘350 km长的高压-超高压变质带，提出其可能代表早古生代时期北中国板块与扬子板块之间西部界限的新认识；④根据加里东期蛇绿岩、花岗岩及俯冲杂岩带的新发现，初步建立了古碰撞造山格架；⑤提出高原隆升的&地幔底辟和内向陆内俯冲&的新假设。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。